3 minutes! I just worked up to 1 minute and I was proud of myself. Gotta go work on my plank............

It took 2 visits (2 mri's) to the best ortho guy in town, a chiropractor and a physical therapist (and a LOT of research on my own) to make me comfortable on the bike. Don't give up. You may never find the exact cause, but you will find a way to cope (for me, ibuprofen and lots of ice after longer rides--and the realization I may never keep up with my DH).

To add to what Knotted said, I technically don't have a leg length difference, but my pelvis is twisted and not level. This results in the whole leg and hamstring shortening--we think. It's that whole which came first, the chicken or the egg............

Good luck