I did my first fixed century yesterday. Honestly, I think 100 miles on the fixed gear was a bit easier for me to complete then doing 50 on a geared bike. My reason is on a geared bike I'm guilty of coasting after a big climb, only to have sore quads for the next climb. It seems like the fixed gear worked the soreness back out and I was ready to take the next climb. Anybody else have this experience?