Best century rides in Boulder, CO
Feeling ambitious? These are 100-mile centuries from Boulder — kept flat and paved so it's the distance, not the climbing, that makes the day. Not exactly casual, but a heck of a ride.
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Boulder century out & back ride — 104.47 mi
This is a solid 104-mile all-paved loop heading northeast with about 2,736 feet of climbing spread across the ride. You'll spend most of it on quiet roads, with just a brief stretch on busier pavement to connect sections. It's a proper distance day—plan for seven hours in the saddle and pace yourself accordingly.