Ramping up the mileage

Fall is finally here, which means it's high-mileage season for me. In a typical year, I'll race the Baltimore half-marathon in October and then the JFK 50-miler in November. Last year I missed the JFK, which may not have been a bad thing since I was nursing a sore Achilles. But this year I've signed up for both races, and I really want to make sure I'm prepared. I've been running twice a day during the week, with a long run on the weekends. Right now my weekly average is about 45 miles. I'm satisfied with that, although I may increase it just a little bit after the half-marathon when the weather gets really cool.