This looks great, John; slightly more 21st century than my "UTMB beckons aaarrrggghhh" thread. I can't wait to spend 44 hours following the guys' progress!
Incidentally, yesterday I received a weather update http://www.yr.no/sted/Frankrike/Rh
Crumbs! It looks pretty horrific for Saturday, the main day of the UTMB race. 8 degrees C @ 1,000m altitude Chamonix. What will it be like @ the 2,500m high points on the course? May need the back-up clothing after all.
No doubt there will be many more weather updates, watched with great interest, over the next few days.