16 - 32 km, 1600 m of elevation gain, 6+ hrs., very demanding, grand views: hiking or running on
the last Third of Jungfrau Marathon passing by the glaciers of reknown Jungfrau, Mönch and Eiger. After a coffee break at Kleine Scheidegg back to Wengen, either by feet or by cocktrain.
(attention: 3 hrs. ride to trail head)