James Canyon
Boulder, Colorado, USA
James Canyon
Distance: 11.22 km
Elevation Gain: 674 m
Elevation Loss: 2 m
Difficulty:
543 (Moderate)
FIETS Index: 4.05 FIETS
Avg Grade: 6.01 %
Max cat climb: 1
Min elevation: 1924 m
Max elevation: 2597 m
Ride Category:
Climb
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James Canyon Drive, a well-known side climb off Lefthand Canyon, follows James Creek to Jamestown, a small mountain town north-west of Boulder, Colorado, USA. Jamestown began with lead ore found in 1864, and the camp was called Elysian Park the following year. Gold came in 1875: the Golden Age claim, sold for $1,500, became the district’s best mine. By the First World War the area was mining fluorspar.
The ride starts at the junction with Lefthand Canyon Drive and climbs west along James Creek to Jamestown. Beyond the town it carries on up Overland Road, where the gradient stiffens, and finishes high above Jamestown.
| Rank | Rider | Date | Time | Power | W/kg | Speed |
|---|---|---|---|---|---|---|
| 🥇 | SmP | Mar 03, 2019 | 00:31:33 | 297 W | 5.12 w/kg | 21.36 km/h |
| 🥈 | Alan Gunner | Mar 16, 2019 | 00:33:19 | 311 W | 4.53 w/kg | 20.22 km/h |
| 🥉 | Ilja Booij | Apr 04, 2018 | 00:35:03 | 321 W | 4.28 w/kg | 19.22 km/h |
| 4 | Tristan Kramers | Sep 18, 2017 | 00:35:39 | 310 W | 4.19 w/kg | 18.90 km/h |
| 5 | Peter Kroon | Mar 19, 2017 | 00:36:42 | 302 W | — | 18.36 km/h |
| 6 | Tom Thurston-Mathews | Nov 11, 2017 | 00:36:52 | 275 W | 4.10 w/kg | 18.28 km/h |
| 7 | Silvano Turati | Nov 25, 2018 | 00:37:06 | 246 W | 4.10 w/kg | 18.16 km/h |
| 8 | Knut-Ståle Arntsen | Mar 01, 2018 | 00:37:24 | 282 W | 3.92 w/kg | 18.02 km/h |
| 9 | Maarten Kroon | Nov 23, 2017 | 00:37:32 | 261 W | 4.08 w/kg | 17.95 km/h |
| 10 | Patrick BERNARD | Apr 07, 2021 | 00:37:35 | 331 W | 3.82 w/kg | 17.93 km/h |
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|---|---|---|---|---|---|
| Sugarloaf | 7.72 | 602 | 4.73 | 216 | 4.40 |
| Flagstaff (Super Flag) | 9.04 | 665 | 4.89 | 283 | 4.44 |
| Magnolia | 7.31 | 666 | 6.02 | 297 | 4.53 |
| Passo San Pellegrino (West side) | 10.78 | 656 | 4.10 | 335 | 4.58 |
| Col de Marie-Blanque (West side) | 9.98 | 708 | 5.45 | 499 | 4.39 |