Originally Posted by hhnngg1

Are you a big guy? I'm only asking because while I'm not quite as fast as you, I've been on group rides on flattish ground where my avg speed for the 90 minute ride was 22-23mph, yet I'd guesstimate that the NP required for my effort (I did these rides prior to buying a powermeter) was less than 250 watts. Of course, wind and elevation def factor in, but just seems like if you're pushing 297 watts in a 4-man group on a flat course, you should be seeing 24-25mph.

In any case, that's a good showing. I don't think I'll be doing a 300 watt power hour anytime soon. (I'd have to become a pure cyclist for at least a year, based upon my 260ish FTP now as a triathlete.)