Oooo, it must be time for me again ! Moggie, sorry I missed your earlier post, but I have been going with 2:09 to this event for the last 15 years, and even have a long service certificate from the Davos Tourist board to prove it  I wouldn't recommend the K21 as it is a rather hard course that revolves around the start point of the bridge. If you don't fancy the full C42, then you need the K30, which is the first part of the C42. Andrew. I run the C42, although it does tend to change a bit from year to year. I have run in trail and road shoes and prefer road shoes. The terrain isn't rocky, or I wouldn't be doing it, being rather clumsy. If you want rocky, you need the K42 The paths and trails are mostly of very good quality for easy running, nothing technical like you would find here. All told, thorougly recommended. Ian |