In 2012, I biked 3089 miles. 548 mtn bike miles and 2541 road miles.
In 2013, I biked 4339 miles. 601 mtn bike miles and 4339 road miles.
I'm going for 5k this year. I'm at 915 so far through today. And I still drive about 15k miles a year. Once it warms up, I'm gonna consider commuting to work to get even more miles in. That's about 10-12 miles each way, depending on route.