Cannot run for more than half hour without knee/lower leg pain?

Being on a treadmill at an incline seems to help some, I can last longer without pain if I am on a treadmill but I cannot last long on flat road.

Why is this so? wrote:

Cannot run for more than half hour without knee/lower leg pain?

Try running for 29 minutes.

You're welcome.

I wish that was the solution but 3 weeks ago I could manage 40 mins at 8 min mile pace and then the pain would start, physio told me to lay off so I rested/cross trained for 3 weeks but after the layoff I am worse off ? Like what.. HOW am I worse? 30 minutes at 9 minute pace and I was hobbling home.

There’s a reason it hurts. Just backing off of running doesn’t fix the issue it just calms down the injury. Might be a biomechanic issue leading to imbalances that need to be addressed

I agree that just backing off usually doesn't help, and most cross training keeps you fit but doesn't usually correct imbalances (e.g. swimming). You don't really describe your symptoms, and I'm no doctor anyway, but you might find it helpful to experiment with cross training that's very close to running, as long as it doesn't hurt, in order to address the potential imbalances. Some people swear by biking - I've had mixed results. Two that have helped me a lot through the years are race-walking and stair-climbing. I now incorporate them into my training, injured or not. And these are not wimpy, placeholder workouts. This week I've included a race-walk of 13 miles at sub-10 pace, and a stair-climb of 5,000 steps. Tomorrow I'm planning a 14 mile run, and I truly don't think I'd still have the joints and tendons to run 14 at all if I weren't investing in these other workouts. (I'm 60.)

Where is your pain? Is it both legs or just one?

Depending on the details of your symptoms sounds like it could potentially be consistent with compartment syndrome. Anterior compartment syndrome is the most common and with uphill/incline running relatively more of the workload is shifted to your posterior compartment muscles (calves) vs. anterior. That could possibly explain uphill being better

Why is this so? wrote:

I have taken a 3 week layoff which hasn't seemed to help. I feel fine up until the half an hour mark and then my leg feels red hot, inflamed and is very painful to walk on. I was just stranded 4 miles away from home, it took me 2 hours to get back. Nightmare.

Because running is a bad invention. It will destroy your muscles from the inside out. Anything over 60 meters all out prohibits protein synthesis within the muscle fibers thus causing them to become weaker and smaller.

The lactic acid accumulation effect is what makes you weaker.

Switch to linebacker training. Never run over 40 yards.