Originally Posted by
MinnMan
Yeah, Ohio and High Bridge/Smith have intersections that break up your effort. I think that the coulee south out of Afton should be good for 3 minutes. Definitely no intersections and though it's got a false flat, it's a pretty steady climb. The KOM is 3:02, but to approach that you'd have to be a cat1 or cat 2.
https://www.strava.com/segments/1912611
Yup, that segment in Afton is the closest one that I can think of, but that means an ~80 round trip for me, which also isn't conducive to a hard 3 min effort.