A few years ago Paul did a solo adventure along the Hardergrat Trail in Switzerland. Ever since he’s been eager to go back with us to do it with him. We started scheming and found the time to form a plan and incorporate another visit to the Eiger Ultra Trail alongside the Hardergrat Trail. Paul, Matt and I did the E101 100km Eiger Ultra Trail back in 2022. Darryl and Natalia wanted to do the race too so it was perfect timing, to combine the Hardergrat with the E51 50km race the following day.

The plan seemed simple enough, fly to Switzerland on the Thursday, Do the Hardergrat Trail on the Friday, do the race on the Saturday and fly home on the Sunday. Efficient, although not the recommended approach for a race and a bunch of early mornings were for sure going to be tiring! We based ourselves out of Interlaken to take advantage of being closer to the Hardergrat Trail and more options for accommodation. We also had one shot at the Hardergrat Trail so were very dependent on the weather/ground conditions, which thankfully, were perfect…

Hardergrat Trail

The Hardergrat is a popular and well known hiking trail that runs along side the Brienzersee lake between Interlaken and Brienz. Although I say hiking trail, I don’t believe it is an official waymarked and maintained Swiss trail. Depending where you read, it is often described as one of the most dangerous hiking trails in the world. Whilst I don’t believe that myself and think there might be some dramatisation (I’ve felt less safe on some other trails I’ve done!), the risk is very real and it is well known that people have fallen, in some cases fatally, from the trail (there are many memorials and crosses along the trail!). It also isn’t for the faint hearted though and can be quite terrifying in parts. So if you are considering it, consider it carefully and plan appropriately!

All that said, we didn’t go into this lightly and had planned it very meticulously. Firstly we had Paul leading the way and he had completed the trail before. So we collectively knew the route and dangerous points and what to expect from first hand experience. Secondly we were only going to start if it was safe to do so. If it was wet, or indeed had been wet in the days leading up to our adventure, or windy, or any risk of the forecast changing unexpectedly for the worst, we wouldn’t be starting. We also planned to begin at 5am. The trial is over 25km long and has close to 3000m of elevation gain in total and finishes high up in the mountains where you either get a train back down, or descend over 1000m by foot. We didn’t want to feel any time pressure so we planned to start the hike from Interlaken up to Harder Kulm as early as possible (note, there is a vernacular that covers the ~1,000m climb to Harder Kulm, but this doesn’t start running till about 9am). We also planned to stop towards the end of the ridge and descend to Planalp and get the train to Brienz from there rather than continue all the way to Brienzer Rothorn. These trains finish around 4-5pm so you need to be ready to reach the end destination in time or face that huge descent on foot back to the lake (also worth noting it was about 40CHF for a single ticket down from Planalp!). Besides all that, the four of us consider ourselves to be well experienced on mountain trails and conditions and look out for one another. So we felt we were suitably prepared…

Our one concern was water. Given it is only really safe to attempt this trail in summer, and it is completely exposed along the top so was was going to be very warm, we wanted to carry as much water as possible, a minimum of 3 litres each. With the Harder Kulm being closed so early in the morning, there is no where along the trail to get water for pretty much the duration of the trail. Around Augstmatthorn I believe you could descend and then retrace back to the trail, but you’d be adding hundreds of metres of elevation and hours to your time, so you only really leave the trail here to start or finish a hike. We’d carry as much as we can and be sensible with the rationing.

We woke at 04:00 when our alarms disturbed our slumber. Had a quick breakfast and made our way outside around 04:30. It was a short run to the vernacular station where the trail to Harder Kulm starts. It is a forest trail winding up narrow switchbacks pretty much the whole way. I popped two Energy Bytes (caffeine sweets) here to help wake me up a bit and give me energy on the climb. It took us about 1 hr and a half to make the climb through the forests to Harder Kulm which was about 800m over 5km. From the restaurant and viewpoint here there is probably about another 300m or so along 2 km through the forest before the mountain ridge becomes visible. On the way, as we stopped and ate some sandwiches, a few others passed us including two brothers from America who we would see at various points as we leapfrogged each other along the trails.

It was beautiful seeing the sunrise through the forest and the morning mist giving way to these epic summits stretching way off into the distance. A long way below to your right, the lake looking like a gigantic hole in the ground. The mountain kept climbing until we reached Augstmatthorn around 14km in at some 2,100m up. Getting here we had our first taste of the ridge and some narrow sections. Many hikers stop at Augstmatthorn and make their way off the ridge. Another hiker we were talking to told us the route becomes much harder and more dangerous after this point (he had hiked it many times himself when he was younger he said). Somewhere along here there were also electric fences to one side of the trail to keep the cattle on the mountain side to the left. I know they are electric as at one point, whilst sitting down and resting, I brushed my arm against it and felt a tingle in my opposite ankle. This amused the others!

We carried on knowing we were a little under half way along the route we’d planned. What lay ahead now was a series of 7 or 8 mountain climbs. Each short (in comparison to what we climbed to Harder Kulm!) but very very steep. Some sections were rocky and had ropes and chains. Some sections had very clearly defined paths, but were right on the ridge and were very narrow underfoot. Some of the climbs were like walls and we scrambled our way up. It was very slow progress and we stopped atop of each summit to sit and enjoy the views and eat food. The views around us were pretty static. The view down and across the lake remained unchanged throughout the hike. The view to the left did change as the valley climbed through a mountain pass alongside the ridge. The view in front however was spectacular. With each summit we climbed, the descent became visible and the ridgeline curved off with a different perspective into the distance. Up and down we went…

It was a long slog as each climb was exhausting and we rationed our water more and more. Unlike when running in a race with aid stations, I was taking small sips to ensure I saved the water and had plenty for later on. Each big climb though would quickly empty a bottle. I played a strange game with myself where I was committing to not finishing a bottle before some point I picked in the distance. This felt counterintuitive but, the longer we progressed, the less water we had and the more it become problematic. One by one we were calling out just how many bottles we had remaining and the numbers were dropping quickly!

It’s hard to say for certain which memories and pictures correspond to which peak on the ridge. I do recall though that we passed plenty of hikers along the way, many doing it in reverse having taken the train up from Brienze and hiking back towards Augstmatthorn. One couple were lovely to chat with and I had a great conversation with the lady about the vibrant wild flowers all along the ridge. She told me to “take as many as I could and keep them in my heart”. I thought this was a beautiful sentiment. I also recall one particularly difficult descent which required scrambling down on all fours. For much of the ridge I kept my poles tied away in my pack and relied more heavily on my hands and having more points of contact with the ground.

Towards the end, the ridgeline was far narrower which caused the legs to feel more wobbly despite the clear and flat footpath we were following. Way off in the distance though we could see the Hotel Rother Kulm / Brienzer Rothorn Station which is the true end of the route. We weren’t going the whole way here but instead would escape down the side of the mountain and get on the train at another station at Planalp. For us, continuing to Brienzer Rothorn wouldn’t add much to our experience other than making it more dangerous – it would be quite a few more kms and probably two more hours or so, which we weren’t able to accommodate with water to sustain us. It wasn’t the timings that concerned us, but carrying enough water!

As we neared the trail junction where we could begin descending off the mountain we were all pretty much out of water. By now we’d ‘adopted’ the Americans who had made great progress but ultimately weren’t prepared for their adventure (think lack of training and deciding to do the hike whilst on a family holiday) so together we all descended. Even the downhill was tough going as our legs were now tired and our throats dry. We had about 600m of elevation to drop and about 4kms to go. In the distance we spied a water trough, however when we got closer it was a static one without a tap filling it up. We carried on. Paul had disappeared into the distance and Matt was somewhere between us and Paul. Thankfully after about 3km and 500m of descent we caught up with Matt at another trough that did have a fresh water supply. We stopped and drank about a litre each and refilled our bottles. A few hundred metres further on we all felt the groans of our stomach as the sudden intake of water and bouncing movements unsettled us!

Eventually we made it down to the Planalps station where Paul was nowhere to be seen. He’d mentioned there was a restaurant at the station which we couldn’t see. We soon found it further down the road with Paul sitting happily in the garden waiting for us and a cold panache! We stocked up on drinks of all kinds whilst we waited 45 mins for the next train (which we just squeezed onto) down to Brienz. Here we headed straight to the lake for a lovely cold dip to relax before making our way back to Interlaken. What an adventure! Now time for the Eiger Ultra Trail…

Eiger Ultra Trail E51

After a restless sleep and another an early wake up call we made our way to the station at Interlaken Oost to get the first train to Grindelwald along with a load of other runners. The train was quick and easy and we arrived 20 mins before the race started. We made the dash to the registration centre in the sports centre (we’d taken advantage of the opportunity to request registration on the morning of the race to save another trip to Grindelwald on the Friday!). The ice rink in the basement of the sports centre was gone and it wasn’t cold this year as we waited in the short line, collected our race numbers and dropped our bags off before making the way back to the start line. There were only 5 minutes to go before the race started so we settled into the back of our wave 1 start and then gently ran the 2km or so to the trails. We had maybe 10 runners around / behind us for those first few kms. As we got to the trail there was a big bottle neck as we queued to cross the river. We waited a few minutes at a stand still before we made it through.

Shortly after we began the first climb to Gr Scheidegg, the memories from the E101 a few years ago started to come back to me as we wound our way slowly up the switch backs. Last time we did this in the darkness so it was refreshing this time that I could see the trails and experience them, and the views, around me. We steadily climbed and enjoyed the short break after about 6km where the trail levelled out and we ran the undulating trails before the remaining climb to the first aid station. As we arrived, it was just as I remembered – a narrow set up that doesn’t really accommodate space for the runners. Navigating through the checkpoint in single file we grabbed some snacks and water and waited out the other side. We spent a while here eating and drinking and enjoying the early morning views of the Eiger before carrying on. I popped another Energy Byte to give me a kick and wake me up a bit.

From here to the next aid station, at First, was great. It is a short section of about 6km that has some runnable trails and gentle descents and climbs. All along it are panoramic views of the mountains surrounding the Eiger. The Eiger itself was standing magnificently proud in the cloud cover across the valley. Towards the end of the section we began the long, but gentle, slow ascent to the viewpoint and aid station. As we reached the top, the route markings took us across the trail and towards the viewpoint and the walking platform. This was Natalia’s first time experiencing such a long and exposed platform so we slowly walked along it to the sanctuary of the aid station, after getting some pictures of course! At the aid station I had my own party as I sat and ate loads whilst singing to the 90s pop anthems blaring out. Even though we’d only done less than 15km I tucked into the soups and bouillon available (it’s a popular feed station on the E101 route!). Eventually though we had to carry on.

I remembered the next section as we left First and made our way towards Feld. The trails were similar to before and led us towards some amazing lakes of Bachalpsee, naturally as we ran around the lakes the views were incredible. It really is a beautiful place. I pointed out Faulhorn to Natalia, the highest point in the race way off in the distance, a tiny speck on the mountain. Along here we met some other British runners who were part of a group running from Wild Trail Manchester, the group I spent a lot of time running in London with. After the lakes we encountered a small amount of snow on the trail which made it slippery, so we climbed slowly and carefully. Some smart arse behind us tried to rush past us and slipped in the mud and slid back down the hill. Not sure what he was trying to gain. He didn’t try to go past again.

I knew the next section was quite rocky and technical (It’s even marked as such with ‘danger’ signs from the organisation). That much I could remember. I told Natalia to go slowly as it was rocky and now wet and slippery too. As we progressed we found ourselves near a lady who was clearly uncomfortable on the technical terrain. Knowing it was a short section I told her not to worry and to go at her own pace safely and we’d all follow behind. We stuck with her. Naturally a queue formed as we slowly progressed along the single track. After a while some prick behind us made a comment “it’s called trail running not trail walking”. I couldn’t hold my tongue. My usual polite and refrained manner was overcome and I snapped back to tell him that clearly there are runners who are not comfortable and that their safety is important. I told them that if they wanted too they could find an alternative route past and if they were such good trail runners then they wouldn’t be way back here in the race with us ‘trail walkers’ after 20km. No one said anything. No one tried to get past us. Go figure. It wasn’t long after that the technical trails gave way and the ground became more firm. The lady kindly stepped aside for people to pass her. We went past and started running. A few moments later I looked back, no one was keeping up with us. Says it all. Sometime later, on the next section after the aid station, we past the guy who made the comment as he was sitting on the side of the mountain on the next climb, clearly knackered. I was tempted to make a sarcastic comment then…

Anyway… After a short stop at the next aid station, Feld, we started the climb to Faulhorn. Before the race I couldn’t remember this climb. As soon as I saw it though I remembered. Like years before it was a warm day so a very hot and exposed climb. It is steep and slow going, a snake of runners slowly dragging themselves up to the top. In the sun it felt like it went on for ever. All the way up you can see the restaurant at Faulhorn, sitting way up high and ever so slowly getting closer and more in view. We kept pushing without stopping and made our way over the saddle and onto the last short climb to the restaurant were the trail takes you around to the back/top of Faulhorn. We stopped for a picture by the archway then joined the queue of runners waiting to get in and fill our water. Like many of the aid stations it is a tight fit (although this one on top of the mountain is justifiable with its limited space). I had a few cups of Coke that had been expertly whisked to a flat state by the willing volunteer. It was so refreshing in the heat.

We began descending and all the memories I was so sure of started appearing to have holes, giant black holes. As we left Faulhorn I was chatting to another British lady and I told her it was all nice runnable trails from here. It isn’t. I’d completely forgotten about the next section. First there is a short, sharp descent down from the summit. Then you make your way over rocky ground before the real descent began. This one is long and very rocky. There were a few short snow field crossings thrown in the mix too. As you make your way down you are descending on lots of large steep steps in the rocks, then further down we went, past the restaurant, on trails covered by snow burying the rocks beneath. I slid down on my bum as my shoes had no grip (I was very aware that they are now excessively worn but I thought would be ‘fine for the lovely runnable trails’ I falsely remembered!). Like the climb before it, the descent felt like it went on forever. As the trails started to re-emerge my head started piecing together the memories better as we made our way up a little incline to the water stop that is ‘Egg’.

It was actually this next section from Egg to Schwand that I recalled the best. My memories just made me believe the whole section from Faulhorn was like this. There are some lovely trails for the most part as you ran along the exposed mountain tops. Lots of tourists and walkers out enjoying the hike from Schwand to Faulhorn in he opposite direction. The mountains are exposed and you have these Epic views over the valley to the Eiger on the other side. Way off in the distance you can see another mountain restaurant perched on the side of the mountain. Below it, somewhere, the next aid station. It was a long way to go by sight, but not that long now you can move more quickly with the even terrain underfoot. We made a quick stop in some shade to apply more sun cream as it was getting pretty hot now.

Before getting to the end of the path, there was the ladder/step climb I’d completely forgotten about too. I piggy-backed on to a group of runners half way up and thanked the hikers waiting patiently to come down. After this it was a gentle hike up before we eventually reached the turning point where the downhill started. Pretty much from here it was all down hill to the final aid station. First we descended on lots of switchback trails to the aid station ‘Schwand’ though. This I remembered quite well as two years earlier Paul and I had stopped at a trough and desperately filed our bottles and relaxed, only to then see the aid station a few hundred meters further along. I recognised the trough (now covered up!) and pointed out the aid station to Natalia. We were ready for a break from the sun.

After a little break in the shade and a ‘little douche’ from a volunteer with a hose pipe we departed. The trails led downhill into the forest. It was more technical than I remembered with roots causing the descent to be painful on my now very tired quads and ankles. The ground below was very spongy between the roots. This year I was prepared knowing that there was a sizeable climb during the descent. This caught us out back in 2022. It started in the forest then took us up as we crossed over a waterfall and then climbed further through a hamlet. I didn’t recognise the hamlet and it turns out that we went a slightly different route this time and climbed further. See, not all my memories are wrong! Eventually it was back into the forest as we began descending again and continued down towards the valley. We spent most of the descent in a train of people slowly making their way down gingerly. At some point the single tracks opened and we squeezed passed the group and were able to run at our pace. As the trail became switchback roads Natalia opened up and sped ahead. I couldn’t keep up. We could then smell (literally) the final aid station. We ran passed so many people in the short field as we ran down and into Berglauen. We took a few mins to refuel, deciding against the potatoes on offer, then set off. The final 7km to go back to Grindelwald.

As final 7kms of races go this is ace. It’s pretty much flat the whole way following the river back to Grindelwald. Over the 7km there is 225m of ascent and 100m of descent. Mostly this is grouped into three ‘climbs’ towards the end as you near the town. We ran/walked the whole way passing many runners as we jogged along the river. We then passed through a small village with incredible wood carvings (I now wish I stopped to take a picture!) and welcoming signs before crossing the river and running through the train station and over the train tracks for the Eiger glacier train (which we had to wait for and got a huge thumbs up from the driver). From here it was almost the final stretch as we stated to climb into the town and along the footpath to the point where the E101 joins from the opposite direction and we make our way up the final climb into the town. Its a short steep climb on paved road which everyone climbed so slowly. Once done, it was over! We we ran the few hundred metres down the town to claps and cheers from both sides of the road, round the final turn into the finish line area and down the familiar steep ramp to the finish line.

Just like that it was over. We quickly escaped the busy finish area and went to collect our bags, change into fresh clothes, before meeting up with the others and making our way to the train back to Interlaken. It felt like a very long day by the time we had food and made our way back to the accommodation!

What a weekend! The Hardergrat was an incredible experience and it was special to see the mountains around Grindelwald again and share the race with Natalia. I don’t remember the race being as difficult as it was (and I won’t blame the run the day before!), it was certainly more technical than I remembered. We all agreed we wouldn’t want to do the 100k after experiencing the 50 nor could we believe that we’d done it previously!