The 100KM distance will start in Gluringen at 1316 meters above sea level (4318 feet). The course begins with a gradual downhill on farm/fire-roads and single trails. After the first aid station Niederwald the 100K runner will make their way up to Bellwald and the their first amazing challenge crossing the Aspi-Titter suspension bridge . This bridge is 160 meter long, has 1'894 steps, and the valley below is 120 m deep. Have fun!
Once runners cross that bridge it's 4.8km and 760 meter elevation gain (3 miles - 2,500') to the Gletscherstube aid station. We are not kidding! The next few miles along the Aletsch glacier will make runner's eyes smile!
About 5KM after leaving the Gletscher aid station the 100KM runners will leave make a left turn leaving the 160KM course. They will head directly to the Kühboden aid station. From that aid station there's a long downhill into the lowest part of this course in Fieschertal at 1091 meter (3579').
Once passing through Fieschertal the runners cross yet another suspension bridge the 280 meter (918 feet) suspension bridge Mühlebach-Fürgangen . Soon after that they'll arrive at the Mühlebach aid station where they can find their drop bag if they have one.
From Mühlebach they run to Grengiols. Next up is "The Beast" a 1300 meter (4260ft) climb in only 10.3km (6.4 miles) with 14 switchbacks. Soon runners find the Breithorn aid station. 100KM runners will then run down to the Binn aid station where runners can get their drop bag if they have one. The next 13.5km (8.3 miles) it's a long uphill, followed by a short downhill and a short uphill again to the Chäserstatt aid station.
Once they leave the Chäserstatt aid station they'll run over to the Blinnental aid station. This part of the course runners need to be particular attentive to the course because it can be confusing at times not following a trail for about 2KM. Runners will also cross the highest part of the 100KM course with 2658 meter (8720'). After Blinnental runners reach the Münster aid station where they can see their crew for a last time. From there it's 7.7km (4.7 miles) to the finish line.
With a total elevation gain of 6740 meter (22110'), 100KM runners will have a cutoff time of 26 hours.
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