My brother in law talked me into doing this Farmer's Daughter gravel grinder on Sunday. NBD 65 miles of gravel. I just looked at some stravas of last year's event and jeez -- the national champ type guys did it in 4.5 hours, looks like most people were more like 6 hours. I can't find a single rider who did it with power but hr tss numbers are all over the place from 200-500. What have I gotten myself into?