Schoolmarm top to bottom: Keystone’s green runs

Twelve, eighteen or twenty-four miles — all three start with the same van ride to the summit. The honest differences are how long you are out and how much of it you pedal.

The Frisco Peninsula is the friendliest dirt in the county and fifteen minutes from the shop. What to expect, what to rent, and when to turn around.

Fifty paved, car-free miles link five towns and two passes. Here is how to ride the best of it in a day without a roof rack or a parking fee.