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Open Sky Loop
Easy Easy
8.2 km 5.1 mi Niwot, CO 11 
Open Sky Loop
Avg Rating
Easy Easy

JJ's Rating
Easy Easy
North Boulder Loop
Easy/Intermediate Easy/Intermediate
13.4 km 8.3 mi Boulder, CO 35 
North Boulder Loop
Avg Rating
Easy/Intermediate Easy/Intermediate

JJ's Rating
Easy Easy
Ginny Trail via Powerline Trail
Difficult Difficult
15.2 km 9.4 mi Loveland, CO 74 
Ginny Trail via Powerline Trail
Avg Rating
Difficult Difficult

JJ's Rating
Difficult Difficult
East Boulder Trail - White Rocks Section
Easy/Intermediate Easy/Intermediate
3.3 km 2.1 mi Gunbarrel, CO 5 
East Boulder Trail - White Rocks Section
Avg Rating
Easy/Intermediate Easy/Intermediate

JJ's Rating
Intermediate Intermediate
East Boulder Trail
Easy/Intermediate Easy/Intermediate
19.6 km 12.2 mi Gunbarrel, CO 15 
East Boulder Trail
Avg Rating
Easy/Intermediate Easy/Intermediate

JJ's Rating
Intermediate Intermediate
Gunbarrel to Niwot: Cottontail Trail - Niwot Loop - LoBo Trail
Easy Easy
25.5 km 15.9 mi Gunbarrel, CO 7 
Gunbarrel to Niwot: Cottontail Trail - Niwot Loop - LoBo Trail
Avg Rating
Easy Easy

JJ's Rating
Intermediate Intermediate
Wapiti Trail
Intermediate/Difficult Intermediate/Difficult
4.1 km 2.6 mi Lyons, CO 54 
Wapiti Trail
Avg Rating
Intermediate/Difficult Intermediate/Difficult

JJ's Rating
Difficult Difficult
Betasso Preserve
Intermediate Intermediate
11.5 km 7.1 mi Boulder, CO 363 
Betasso Preserve
Avg Rating
Intermediate Intermediate

JJ's Rating
Hall Ranch
Difficult Difficult
18.9 km 11.8 mi Lyons, CO 306 
Hall Ranch
Avg Rating
Difficult Difficult

JJ's Rating
Difficult Difficult
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