Betasso Preserve sports a varied-terrain tangle of trails for a mix of mileages and skill levels, but combined they make up the Super Betasso, a 16.2-mile, mostly singletrack ride with a brutal climb, some technical rocks-and-roots sections, a few hairpin turns and a sweet downhill payoff. This is also one of the few metro-area trails that successfully accommodates its diverse users — bikes are prohibited on Wednesdays and Saturdays, and all bikers have to go in the same direction — so hikers and horseback riders can easily share the space. Start at Eben G. Fine Park at the start of Boulder Canyon and follow the Boulder Creek path to the Betasso Link Trail, then hang on for the roller-coaster ride of your fat-tire dreams.
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Readers' Choice: Apex Park