left leg tires before right one
 

The title kinda says it all, I have begun noticing that my left leg tires, gets sore, or cramps during rides far before my right leg does.

Am i just weird or is there a possible explanation?

If you got a trainer and bike computer with cadence, I'd try the following.

Pedal with one leg at a time. Pick a gear/resistance which limits each leg to 3-5 minutes. Make sure you pedal each leg at the same cadence. Find out which leg is stronger.

If you left leg is weaker, you may want to do some training with just the left leg.

If you left leg is stronger (or both legs the same), you are working your left leg harder while cycling for some reason. Check you alignment (i.e. shoulders and waist square with bike, both knees tracking the same, etc.)

Me, too. I've been doing one legged pedaling drills for years and the difference is still there. It's probably because, like me, one of your legs is longer than the other. But the OLP does help a lot.

Didn't even think about that, I do have one leg that is about 1/4 inch longer than the other.