15. KoBoLT

The 15. KoBoLT is a private, invitation-style ultratrail along the Rheinsteig, starting above Koblenz at Ehrenbreitstein and finishing in Bonn-Oberkassel. Covering roughly 140 km with about 4,440 m of ascent, it offers a rugged point-to-point challenge on marked hiking trails in late autumn conditions. The organisers emphasise self-reliance and respect for the trail, with no pacers allowed and a strict bring-your-own-cup policy at aid stations.

All participants must collect their start pack in Bonn before taking the included bus transfer to the start. There are few but well‑provisioned aid stations with warm food and drinks, and a dropbag is available at the third aid point. The time limit is 29 hours, with the event concluding on Sunday afternoon; every finisher receives a medal and the top three women and men receive special prizes.