Top 10 bike climbs in Colorado with the most elevation gain. We have documented most of the 10 Colorado Bike climbs with the most elevation gained and those are featured in the slideshow on this page as well as the Table for the full Top 10 Colorado Bike Climbs. The cycling climbs gaining the most altitude in Colorado, and some of the hardest and most scenic Colorado bicycling climbs are, in order of elevation gain, 1. Pikes Peak, 2. Trail Ridge, 3. Mount Evans, 4. Grand Mesa North, 5. Lyons to Ward to Brainard Lake, 6. Left Hand Canyon - Jamestown - Brainard, 7. Left Hand Canyon - Ward - Brainard Lake, 8. Grand Mesa South, 9. Cottonwood Pass, and 10. Coalbank Pass.