Originally Posted by
adamrice
It would take a very lucky set of circumstances to be able to ride an honest 20-minute FTP test on the road, or even 8-minute test, but a 3-minute test is probably doable outside of urban areas.
Agreed. 8 minutes and 3 minutes are doable, but not as ideal for the results. I've only had a stretch that was usable for 20 minute tests on the road in two places I've lived...