I not a cyclist but I am a runner. I run 5 miles a night and had not been able to go run over 6mph for an entire run. the first night I wore these I was easily able to break the 6mph mark. I was able to go 5miles in less than 50 minutes with no leg fatigue and no pain the next day. We will see if they do the same for a longer distance run but I love everything about these so far.