I've been riding my bike most every day to work this summer. It's about 13 miles round-trip. Undoubtedly, I'd have reached 500 miles sooner, but I took 6 weeks off while I was in Europe this summer.
I'm not planning on riding in the snow during the winter, but I may be able to crack 1000 miles before I hang it up. I need to get some cold-weather gear, though. It's starting to get chilly!