Some background first:
- ran 800/1600 in HS with PRs of 1:57 and 4:32
- didn't run in college
- began running again when I was 24 (never reaching more than 40 miles a week until I started a build up for a marathon in the fall of 2019)
- was nearing the end of a marathon build up in March when COVID-19 cancelled my race
- during that time I was averaging 60 miles a week, but had a couple weeks in the 70s and one in the 80s, all with 2 quality work outs a week
- decided to see what I could do mileage wise, and how sustainable it would feel
So, basically, my theory is that for the semi experienced runner, it's a lot easier to add mileage than we typically assume, if you run the easy mileage at an actual easy pace (1:30-2 minute/mile slower than marathon pace). For the last 10 weeks, I've been averaging 90ish miles a week (while still doing a quality tempo run 20 min @ 5:40 pace each week), with 3 100 mile weeks thrown into the mix. All of my easy runs are done at what feels like a ridiculously easy pace (7:45-8:30 min/mile pace depending on terrain/weather/temp).
During the first two weeks, I felt really depleted from the huge jump in mileage, but the fatigue just kind of leveled off in the following weeks. I just capped off a 100 mile week, and feel pretty good. This just leads me to believe that most people are doing their easy runs way too fast because their egos make them run faster than they need to. The relative effort of my tempo run has plummeted, leading me to believe that the mileage is paying its dividends fairly quickly.
Thoughts? Do most people struggle with mileage simply because they run their easy runs too fast?