Originally Posted by
AlgarveCycling
That doesn't sound unreasonable. 120km and 349m is almost flat. 4 riders, all on the strong side of things, yeah, 37.4km/h is very do-able, weather-conditions permitting for a 51yr old relatively fit cyclist. At 121bpm he isn't going full gas either and he could have done a lot of drafting.
Yes, 121bpm is just loafing along for some. And 51 is definitely not old. I know of at least 2 cat 1 racers over 50.