| USDA Certified Lean (4th St) | 1.66 mi | 157 ft | 1.8% |
| 4Th St. Hill Sprint | 0.22 mi | 72 ft | 6.0% |
| Hills to the 4th Power | 1.44 mi | 131 ft | 1.2% |
| How many bumps will you jump? | 0.42 mi | -95 ft | -4.1% |
| Centennial shootout | 0.52 mi | -56 ft | -2.0% |
| Up To Eagle Trail | 0.17 mi | 23 ft | 2.4% |
| 49th - Niwot to Oxford | 0.95 mi | 49 ft | 0.8% |
| Dirt flyer S-N | 1.74 mi | -95 ft | -0.5% |
| 51st - Nelson to Frog Belly | 0.47 mi | -89 ft | -3.5% |
| The Travel Way | 0.37 mi | 10 ft | 0.3% |
| 66 & 75th to 75th & Hygiene Rd | 0.99 mi | -69 ft | -1.3% |
| 75th-into-Hygiene | 0.99 mi | -72 ft | -1.4% |
| Crane Hollow Complete Climb | 0.38 mi | 33 ft | 0.9% |
| Krane Kicker | 0.05 mi | 10 ft | 3.0% |
| St Vrain Rd & 65th to 65th & Nelson Rd | 1.50 mi | -75 ft | -0.7% |
| N. 65th Southbound | 1.43 mi | -75 ft | -0.7% |
| Dry Creek Part I | 0.37 mi | -16 ft | -0.8% |
| Dry Creek Part II | 0.87 mi | 102 ft | 1.9% |
| Dry Creek Part II end at 2nd bridge | 0.33 mi | -13 ft | -0.7% |
| Double Upsy Daisy | 1.90 mi | 322 ft | 3.0% |
| Niwot Trail Hills by NHS | 1.26 mi | 236 ft | 3.5% |
| Backside hill | 0.24 mi | 98 ft | 7.6% |
| Niwot Hill + Somerset | 1.77 mi | 315 ft | 3.2% |
| Niwot Hills Climb | 0.63 mi | 157 ft | 4.6% |
| Cheapo Niwot Hill Climb | 0.53 mi | 138 ft | 4.9% |
| Chessman 2 | 0.71 mi | 138 ft | 3.5% |
| Niwot Hills to Somerset Connector | 0.58 mi | 49 ft | 0.8% |
| Somerset Downhill | 1.03 mi | -164 ft | -3.0% |
| cottontail speed run SB (CX) | 0.49 mi | 39 ft | 0.8% |
| Cottontail, 52 to highpoint | 0.39 mi | 46 ft | 2.2% |
| cottontail full tilt climbing SB | 0.20 mi | 36 ft | 3.4% |
| Cottonwood Trail: Underpass to Lookout | 1.19 mi | 125 ft | 2.0% |
| Niwot Trails #4 | 0.77 mi | 79 ft | 2.0% |
| Cottonwood Trail Climb to Lookout Road | 0.64 mi | 82 ft | 2.4% |
| Col de Gunbarrel | 1.00 mi | 171 ft | 3.2% |
| 75th into North Heatherwood | 0.24 mi | 30 ft | 2.4% |
| Gunbarrel Hill - OSMP Entry to Summit | 0.50 mi | 108 ft | 4.0% |
| Finney Hill | 0.69 mi | 105 ft | 2.4% |
| Tank 2 Turn downhill + bump | 0.48 mi | -118 ft | -4.5% |
| White rocks descent | 0.97 mi | -167 ft | -3.2% |
| Valmont 75 to 61 | 1.72 mi | 26 ft | 0.2% |
| Jumping Valmont | 0.30 mi | -7 ft | -0.2% |
| Valmy Sprint! | 0.22 mi | -0 ft | 0.0% |
| Boulder Creek Path from 55th to Foothills | 1.17 mi | 36 ft | 0.6% |
| BCP 55th to 17th | 3.05 mi | 108 ft | 0.7% |
| Boulder Creek Path - Foothills to Folsom | 1.33 mi | 66 ft | 0.9% |
| Creek Commuter | 2.09 mi | 95 ft | 0.9% |
| 30th to Arapahoe (Boulder Creek Path) | 1.42 mi | 72 ft | 1.0% |
| 28th to 17th on Boulder Creek | 0.82 mi | 43 ft | 0.9% |
| take the detour! | 0.30 mi | 16 ft | 1.0% |
