Originally Posted by
nlerner
Longest day I've done on a 3-speed is 50-60 miles. Terrain, of course, will determine whether you're wishing for more gears. I've thought I might try this one at some point on a 3- or 4-speed:
https://ridewithgps.com/routes/856676
That's 100 miles with about 4K feet of climbing, so "flat" is definitely relative in this part of the US!
You need to do that century in central Iowa. I'll bet you a dollar to a donut that I can find you a flatter century than the one you posted. There may be more brew pubs on the ride, however, that will offset the flatness advantage . . .