All Locations > Colorado > Boulder > Flatirons > North

Classic Climbs for The Spy

Mountain Project's determination of the most popular, highly-rated routes.

5.3 3+ 10 III 9 VD 3a R 169 ● East Ridge Trad
5.7 5a 15 V+ 13 MVS 4b 10 ● 007 Trad

● East Ridge

169

5.3 3+ 10 III 9 VD 3a R Trad

● 007

5.7 5a 15 V+ 13 MVS 4b Trad

All Locations

Colorado (34,821)

Boulder (5,508)

Flatirons (1,398)

North (627)

Welcome

Join the Community

Create your FREE account today!
Already have an account? Login to close this notice.

onX products are built by adventurers, for adventurers. We believe that every adventurer needs to know where to go, to know where they stand, and to be able to share their experiences.
About onX
Careers