Colorado

Boulder Fort Collins -- Boulder -- Road Rolling hills to sharp climbs. (52.1 miles)
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Boulder Gunbarrel Ramble -- Boulder -- Road Flat to rolling hills. (24.8 miles)
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Carter Lake -- Longmont -- Road/mnt bike Rolling praire. Dirt road to Carter Lake. (29.3 miles)
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Crested Butte Trail -- Crested Butte -- Mnt Bike Rolling hills to steep hills. (24.6 miles)
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Dillon Reservoir -- Fresco -- Mnt Bike Flat to rolling hills. (35.4 miles)
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Glenwood Springs Scout -- Glenwood Springs -- Mnt Bike Flat to moderate hills. Some steep climbs. Woods. (24.6 miles)
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Lyons Estes Park -- Lyons -- Road Mountains. Steep ascents and descents. (52.5 miles)
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Rainbow Trail -- Mears Junction -- Mnt Bike Valley, flat to moderate hills. River and woods. (20.6 miles round trip)
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Trimble Durango -- Trimble -- Road River valley. Historic town and hot springs. (19.5 miles)
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Turquoise Lake -- Leadville -- Road Flat. Historic town. Lake and woods. (20.0 miles)
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Twin Lakes -- Twin Lakes Reservoir -- Mnt Bike Lake. Flat and rolling. (14.1 miles)
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