Ache after 25+ miles

Since about mid feb I've started to get an ache on the outside of my left knee, usually about 25/30 miles. It started on or around a time I think I knocked my knee, or lifted something that trapped a nerve. I have not changed anything and it happens with both sets of shoes/bikes.
It's not as bad as it was in the early stages when it first happened and I thought it had cleared up when I rode the Peaks (50 miles) a few weeks ago. Then went out the following Wednesday (35 miles) and it came back.
The ache is more noticeable during rotation and not when I press down (if I stop pedalling I hardly feel anything). After the ride it's very mildly uncomfortable for a few hours but when within five I can hardly feel a thing.
Any ideas?
Thanks
It's not as bad as it was in the early stages when it first happened and I thought it had cleared up when I rode the Peaks (50 miles) a few weeks ago. Then went out the following Wednesday (35 miles) and it came back.
The ache is more noticeable during rotation and not when I press down (if I stop pedalling I hardly feel anything). After the ride it's very mildly uncomfortable for a few hours but when within five I can hardly feel a thing.
Any ideas?
Thanks
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Posts
After that it could be cleats, bike set up, lack of stretching or something more serious that you have damaged when you bumped your knee!!!
Good luck.......
I get this one spot on either of my legs that starts to get uncomfortable in a certain position of the rotation, especially in climbs.