Last week was my first 140 mile week. I did 20 miles each of those days. My 3 weeks prior were 123, 121, and 127. Before that was a bunch of 90 mile weeks. This winter I was in the mid 70s, and did about 4-5 straight months right at 60 a week before the mid 70s. So there's my recent mileage progression. In xc I ran a 1653 5k off of 60 mpw, which was a huge pr for me. My coach started me on workouts too early(Christmas day) during winter so I had to take a break in late March from running to avoid burnout and then I couldn't do track since it'd "look bad" if I missed 2 weeks of practice. I'm 18, just graduated HS.
There's some of my basic background info. I'm a big fan of the 1970s marathoners, especially Bill Rodgers. Johnny Kelley(1957 Boston champ) changed the training philosophy for the marathon, instead of doing a lot of intervals, he did a lot of LSD and just ran a ton of miles. He took Amby Burfoot under his wing after coaching him in HS. Then Amby followed in his mentor's footsteps and ran 120-150 mpw, with routine 25 mile long runs and even did a pair of 175 mile weeks the winter before he won the 1968 Boston Marathon. After picking running back up, Bill Rodgers tried to train just like Amby, who trained a lot like Johnny Kelley. Obviously, it lead to a lot of success for Bill.
Like Bill I hate speed work. I did plenty of it during track and xc in HS, but I just don't like it. I like going out for a nice long run and just enjoying myself and taking time to escape from the world and just letting my mind wander. With speed work, the constant starting and stopping and structure of the workouts doesn't allow for this. As such, I'm going to stop doing speed work, and instead just run by feel every day, maybe once or twice a week really push the pace on a run if I feel good. I'm a fan of 12/8 mile doubles, but may do a few 10/10 doubles too. I've been doubling Monday through Saturday the past 4 weeks with a long run on Sunday. Last Sunday was my first 20 mile long run ever and it was fun. My runs average out to a 730 pace, some are slower and some are faster but the overall weekly average for just easy and long runs always comes out to about 730.
I'm taking class this year for free at the community college which doesn't have an xc/track team, but have no intention of getting a bachelor's degree unless offered a full ride scholarship which I don't see happening.
If I continue to run 140 mpw consistently for several years, how much faster could I expect to get? How likely is this to work well for me? (I've never been injured, I have good bio-mechanics and probably good genetics to avoid injury) If injury isn't an issue, what could I expect? Does anyone have experience with this?