The image above illustrates my weekly running mileage in 2008 (red) v. 2009 (blue). In 2008, I was coming off of injury that kept me out all of 2007 so I started very slowly, with lots of walking and bike commuting (neither shown), so there are more exercise hours, just not running hours. The shuffle was my first race but I ran it at a moderate to tempo pace. I had no week with more than 31 miles until August 11! But late August through early December I was doing 40 to 50 mpw. My two fall road races were PRs.
This year I started off much more quickly, raced from the get-go, and got my butt injury the week before Pineland. Continued racing in June and July seems to have slowed any kind of recovery. And my July road race was 1 minute slower than predicted by my Fall 5K and 10K times. Now I'm trying to ramp up the miles using doubles instead of longer runs. And no races, intervals, or tempos for another few weeks. I'm running the breaker but not racing it (like the scuffle last year).