I'm guessing you're clipping in? If cycling this much doesn't bug you, probably no leg length issue. Being clipped in reduces freedom of movement enough that long times in the saddle make those niggly pains due to one leg being (actually or functionally) longer really prominent.
I now get why my massage therapist took one look at me after the Seattle to Portland and cringed, the asymmetry was that visible.
Glad to see your patience paying off!
Ah ok. Well yep, was clipped in and have done longer rides clipped in, so guess it probably isn't a leg length thing then. PT has several hypotheses about things that might have contributed to the pull. Top of the list are: left toe with limited range of motion, right ankle with limited range of motion and 'winging' shoulder blades... but then maybe also tight quads/hamstrings... So trying to work on all of those in addition to PT exercises for stuff more closely related to injury. But it's a lot!
Think it's paying off. Just got to keep steadily at in. And should at least be getting in more hours on cross trainer/bike for fitness if I can't yet run fast...
Quite a list! Glad to hear all is going well. Slow and steady leads to healthy and fast!:-)