Kinda apples and oranges.
I've been a runner for close to 30 years at 240 to 310 lbs and have never been injured. Ran a marathon (my 5th) this past November at about 270 lbs. When I'm into running, it's hard to find the physical and mental energy to do lower-body lifting. Plus the lifting leaves your legs dead for running for the next day or longer depending on how hard you lift.
Runners refer to lifting as "cross-training" and can't imagine why you'd lift if it doesn't improve your running. Lifters refer to running as "doing cardio" and can't imagine why you'd run except for fat-burning. I don't cross-train and I don't do cardio. I lift and I run, each for its own sake.
Currently I'm squatting and deadlifting twice a week and running about 5 times per week, but only doing about 20 miles per week. I'm more into lifting currently. Plus, I lost control of my eating after the marathon and put about 20 lbs back on, which makes the running harder and the lifting easier. Last summer and fall when the weather was nice and I was ramping up mileage for the marathon, lifting fell down the priority list and I pretty much dropped it.
You can work hard at both lifting and running, but it's tricky and takes time, mental and physical energy, and planning. I've found it hard to care about both at the same time. One might help the other slightly, but not a whole lot. Doing some of both is good for general health, but you don't need to feel obligated to lift if you find yourself getting into running.
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