25% off road, 75% road 1:40:00 [1] 18.0 km (5:33 / km) +610m 4:45 / km
shoes: Saucony Trigon 5 Guide
Footing with Mündi, Rüüd and Helge in Twannbachschlucht. Uh, I felt really weak. Had troubles not to walk uphills. My stomach flu from yesterday did cost me some energy.