For the past 1.5 months, I've been running between 90-100 miles per week (with 2-3 high-intensity / quality days) as I train for a spring 10K / half. However, I'm experiencing an issue that has plagued me since I first started marathon training in the fall of 2017. No matter how much I run or adapt my diet, I can't seem to lose weight or gain muscle definition.
To be fair, I'm not terribly heavy, and my abs are quite visible. That said, I seem to "get a gut" on a random day-to-day, my face always looks like that of an unfit person, and most notably, my quads and upper legs always look like smooth, round sausages rather than the ripped muscles of my training partners.
I eat an incredibly clean diet (whole wheat oats for breakfast, 3+ pieces of fruit per day, tons of veggies with every meal, almost no processed foods) and have been eating pretty much the exact same amount for 2+ years now. Thinking my volume of consumption might be an issue, I carefully tracked my caloric intake over the past month, and it rarely crests 2,200 calories.
It's so frustrating that no matter how much I run or how cleanly I eat, my weight or body composition never budges; in fact, I've gained about 4-5 pounds over the last month. In early 2017, I was able to lose some Freshman 15 weight by eating <1700 calories / day (on a good bit less running volume), but since then, my highest weights have dovetailed closely with my periods of highest mileage.
Has anyone experienced anything similar or have any ideas what might be up?