Mine's 11.5 with about 420 feet of climbing on the way there. These days I'm doing it on an MTB with studded tires. Takes me an hour, maybe an hour and 5 minutes.

If you're worried about it, promise yourself you'll do it a couple days a week while you work out your route and logistics.

But definitely do it. You won't believe how good you'll feel.

Write in a couple weeks and tell us how well it's going! See you on the 2012 mileage thread, and soon!