This is definitely true. Distance/time running is the most effective lever you can pull to increase performance assuming your form isn’t completely messed up.
I used to run competitively in my teens. Now nearly 40 and getting back into it. Recently upped distance to 50 miles a week (mostly slow) from 20 and I’m suddenly doing sub 17min 5ks. Couldn’t get below 19 mins before upping mileage.
I used to run competitively in my teens. Now nearly 40 and getting back into it. Recently upped distance to 50 miles a week (mostly slow) from 20 and I’m suddenly doing sub 17min 5ks. Couldn’t get below 19 mins before upping mileage.