Sugarloaf
Boulder, Colorado, USA
Sugarloaf
Distance: 7.72 km
Elevation Gain: 602 m
Elevation Loss: 0 m
Difficulty:
570 (Moderate)
FIETS Index: 4.73 FIETS
Avg Grade: 7.86 %
Max cat climb: 2
Min elevation: 1849 m
Max elevation: 2451 m
Ride Category:
Epic Climb
The Sugarloaf Road climb is a challenging and scenic ascent near Boulder, Colorado. It’s a favorite among local cyclists for its combination of steep gradients, rugged mountain views, and relatively quiet roads. While it’s not the longest climb, it packs a punch with steep grades, especially if you’re not used to sustained efforts at altitude. Cyclists sometimes encounter deer, elk, or even black bears (so stay alert).
| Rank | Rider | Date | Time | Power | W/kg | Speed |
|---|---|---|---|---|---|---|
| 🥇 | SmP | Oct 16, 2018 | 00:25:54 | 291 W | 5.02 w/kg | 17.89 km/h |
| 🥈 | Patrick Smit | Feb 05, 2022 | 00:26:18 | 301 W | 4.93 w/kg | 17.58 km/h |
| 🥉 | Tom Smeets | Feb 27, 2018 | 00:26:53 | 345 W | 4.66 w/kg | 17.24 km/h |
| 4 | Alan Gunner | Sep 14, 2018 | 00:27:08 | 327 W | 4.56 w/kg | 17.08 km/h |
| 5 | Tristan Kramers | Dec 03, 2019 | 00:27:30 | 332 W | 4.55 w/kg | 16.85 km/h |
| 6 | Ilja Booij | Aug 18, 2017 | 00:28:17 | 318 W | 4.39 w/kg | 16.39 km/h |
| 7 | Silvano Turati | Nov 16, 2018 | 00:28:26 | 270 W | 4.50 w/kg | 16.30 km/h |
| 8 | Patrick BERNARD | May 17, 2022 | 00:29:19 | 345 W | 4.16 w/kg | 15.77 km/h |
| 9 | Christopher Epo | Jul 16, 2017 | 00:30:06 | 342 W | 3.98 w/kg | 15.40 km/h |
| 10 | Tom Thurston-Mathews | Nov 13, 2017 | 00:30:18 | 276 W | 4.12 w/kg | 15.30 km/h |
| 11 | Gunnar Tojren | Mar 06, 2019 | 00:30:36 | 308 W | 4.00 w/kg | 15.15 km/h |
| 12 | Pete Norris | Jan 19, 2018 | 00:31:00 | 247 W | 4.09 w/kg | 14.95 km/h |
| 13 | Thomas Weinreich | May 31, 2017 | 00:31:05 | 303 W | 4.04 w/kg | 14.91 km/h |
| 14 | Knut-Ståle Arntsen | Mar 14, 2019 | 00:31:23 | 283 W | 3.93 w/kg | 14.77 km/h |
| 15 | lee Marshall | Mar 22, 2018 | 00:31:31 | 262 W | 4.03 w/kg | 14.71 km/h |
| 16 | Martin Budd | Jun 27, 2017 | 00:31:45 | 277 W | 3.87 w/kg | 14.60 km/h |
| 17 | posaucier saucier | Dec 30, 2017 | 00:32:04 | 250 W | 3.90 w/kg | 14.45 km/h |
| 18 | Sebastian Meyer zu Selhausen | Mar 13, 2019 | 00:32:30 | 313 W | 3.68 w/kg | 14.26 km/h |
| 19 | kms-321@hotmail.com | Apr 28, 2017 | 00:32:47 | 236 W | — | 14.14 km/h |
| 20 | Tigo Star | Mar 08, 2017 | 00:32:53 | 284 W | — | 14.09 km/h |
| 21 | Vlad Naoukin | Jan 04, 2017 | 00:33:22 | 267 W | 3.34 w/kg | 13.94 km/h |
| 22 | Christian Borchgrevink-Vigeland | Mar 24, 2018 | 00:33:34 | 294 W | 3.68 w/kg | 13.81 km/h |
| 23 | David Descamps | Dec 18, 2018 | 00:33:36 | 247 W | 3.69 w/kg | 13.79 km/h |
| 24 | Aleman (CycleChat) | Mar 21, 2018 | 00:33:38 | 250 W | 3.81 w/kg | 13.78 km/h |
| 25 | Douglas Forer | Mar 16, 2019 | 00:33:43 | 294 W | 3.68 w/kg | 13.75 km/h |
| 26 | john guinn | Aug 18, 2018 | 00:33:44 | 222 W | 3.70 w/kg | 13.74 km/h |
| 27 | Geir Skaugen | Dec 22, 2018 | 00:33:44 | 318 W | 3.53 w/kg | 13.74 km/h |
| 28 | Piet van Hulst | Mar 07, 2019 | 00:33:51 | 250 W | 3.68 w/kg | 13.69 km/h |
| 29 | Anton Kochegarov | Sep 07, 2017 | 00:33:58 | 241 W | 3.65 w/kg | 13.64 km/h |
| 30 | Peter Holpar | Mar 14, 2019 | 00:34:20 | 236 W | 3.75 w/kg | 13.50 km/h |
| 31 | Dean Hallam | Apr 05, 2018 | 00:34:23 | 272 W | 3.63 w/kg | 13.48 km/h |
| 32 | Sławek Bikeman | Feb 19, 2020 | 00:34:27 | 277 W | 3.55 w/kg | 13.45 km/h |
| 33 | D Speelman | Nov 29, 2025 | 00:34:27 | 280 W | 3.59 w/kg | 13.42 km/h |
| 34 | Raf Van Grieken | Mar 11, 2019 | 00:34:57 | 262 W | 3.49 w/kg | 13.26 km/h |
| 35 | Indalecio Lekerika | May 03, 2018 | 00:35:04 | 207 W | 3.63 w/kg | 13.22 km/h |
| 36 | B E | Mar 09, 2019 | 00:35:22 | 249 W | 3.51 w/kg | 13.10 km/h |
| 37 | Lukasz Pilny | Mar 10, 2019 | 00:35:27 | 264 W | 3.38 w/kg | 13.07 km/h |
| 38 | Rene van Leeuwen | Dec 30, 2021 | 00:35:51 | 254 W | 3.39 w/kg | 12.90 km/h |
| 39 | Volker Scheid | Mar 08, 2019 | 00:36:06 | 234 W | 3.34 w/kg | 12.84 km/h |
| 40 | Guillaume Bous | Feb 13, 2018 | 00:36:11 | 225 W | 3.36 w/kg | 12.81 km/h |
| 41 | Graham Lowe | Mar 01, 2019 | 00:36:15 | 304 W | 3.33 w/kg | 12.79 km/h |
| 42 | Gareth Davies | Jul 01, 2018 | 00:36:44 | 225 W | 3.44 w/kg | 12.62 km/h |
| 43 | Christian Ashcroft | Jan 17, 2018 | 00:36:46 | 245 W | 3.31 w/kg | 12.61 km/h |
| 44 | Saskia van Zijp | Jan 16, 2018 | 00:36:54 | 213 W | 3.33 w/kg | 12.56 km/h |
| 45 | Patrick Reinquin | Dec 21, 2017 | 00:36:55 | 234 W | 3.30 w/kg | 12.55 km/h |
| 46 | Mark Greedy | Nov 17, 2017 | 00:37:04 | 278 W | 3.27 w/kg | 12.50 km/h |
| 47 | Matthias Schlaffer | Mar 02, 2019 | 00:37:10 | 241 W | 3.26 w/kg | 12.47 km/h |
| 48 | Irma Grape | Mar 07, 2019 | 00:37:23 | 214 W | 3.29 w/kg | 12.40 km/h |
| 49 | erik bruin | May 06, 2018 | 00:37:25 | 259 W | 3.20 w/kg | 12.39 km/h |
| 50 | Martin Dyer | Mar 21, 2018 | 00:37:32 | 250 W | 3.29 w/kg | 12.35 km/h |
| 51 | Martin G | Mar 19, 2020 | 00:37:43 | 268 W | 3.15 w/kg | 12.26 km/h |
| 52 | David Dos Santos Rodrigues | Jan 14, 2025 | 00:37:43 | 201 W | 3.24 w/kg | 12.26 km/h |
| 53 | Ivan Bergman | Jul 24, 2020 | 00:37:50 | 238 W | 3.17 w/kg | 12.22 km/h |
| 54 | Oskar Casquero | May 29, 2020 | 00:37:56 | 232 W | 3.18 w/kg | 12.19 km/h |
| 55 | James MacDonald | Oct 19, 2021 | 00:38:09 | 216 W | 3.27 w/kg | 12.12 km/h |
| 56 | John Gaasbeek | Sep 18, 2018 | 00:38:23 | 246 W | 3.19 w/kg | 12.07 km/h |
| 57 | Alex Vouillot | Mar 01, 2019 | 00:38:38 | 247 W | 3.25 w/kg | 12.00 km/h |
| 58 | Reiner Feick | Jan 09, 2023 | 00:38:39 | 239 W | 3.06 w/kg | 11.96 km/h |
| 59 | Reiner Feick | Jan 16, 2024 | 00:38:39 | 239 W | 3.06 w/kg | 11.96 km/h |
| 60 | Peter Vriesman | Jul 05, 2018 | 00:39:41 | 230 W | 3.07 w/kg | 11.68 km/h |
| 61 | Keith Loveman | Nov 04, 2020 | 00:39:43 | 225 W | 3.04 w/kg | 11.64 km/h |
| 62 | thirard michel | Mar 05, 2019 | 00:40:05 | 203 W | 3.08 w/kg | 11.56 km/h |
| 63 | Goran Meglaj | Mar 15, 2019 | 00:40:16 | 235 W | 3.05 w/kg | 11.51 km/h |
| 64 | Fabrice Maisonneuve | Mar 02, 2018 | 00:40:21 | 211 W | 3.01 w/kg | 11.49 km/h |
| 65 | Fabrice Maisonneuve | May 24, 2021 | 00:40:21 | 214 W | 3.06 w/kg | 11.46 km/h |
| 66 | Brian Snail | Oct 03, 2023 | 00:40:25 | 234 W | 3.04 w/kg | 11.44 km/h |
| 67 | mohamad raouf | Jan 02, 2018 | 00:40:47 | 233 W | 2.91 w/kg | 11.36 km/h |
| 68 | JJosef Kluson | Feb 08, 2021 | 00:41:52 | 215 W | 2.87 w/kg | 11.04 km/h |
| 69 | James Mungall | Nov 05, 2021 | 00:41:59 | 238 W | 2.83 w/kg | 11.01 km/h |
| 70 | Nichan Zourikian | Feb 07, 2018 | 00:42:10 | 213 W | 2.92 w/kg | 10.99 km/h |
| 71 | thierry marc | Mar 10, 2019 | 00:42:21 | 209 W | 2.86 w/kg | 10.94 km/h |
| 72 | Max Wall | Mar 25, 2018 | 00:42:44 | 213 W | 2.84 w/kg | 10.85 km/h |
| 73 | Asa Post | Mar 25, 2018 | 00:42:46 | 188 W | 2.93 w/kg | 10.84 km/h |
| 74 | Ian Curran | Jun 10, 2020 | 00:43:19 | 207 W | 2.76 w/kg | 10.67 km/h |
| 75 | Alexey Demenev | Apr 30, 2018 | 00:43:32 | 241 W | 2.68 w/kg | 10.65 km/h |
| 76 | Clare Garewal | Dec 30, 2020 | 00:43:49 | 191 W | 2.77 w/kg | 10.55 km/h |
| 77 | Pascal Saillard | Mar 03, 2019 | 00:43:57 | 214 W | 2.68 w/kg | 10.55 km/h |
| 78 | Jacob Heckmann | Aug 21, 2018 | 00:44:27 | 217 W | 2.65 w/kg | 10.43 km/h |
| 79 | Henrik Sørensen | May 04, 2018 | 00:45:03 | 214 W | 2.68 w/kg | 10.29 km/h |
| 80 | Igor Tatarinov | Jun 13, 2020 | 00:45:24 | 213 W | 2.61 w/kg | 10.18 km/h |
| 81 | Mikael Nordberg | Mar 19, 2021 | 00:45:32 | 193 W | 2.64 w/kg | 10.15 km/h |
| 82 | Paul Ellis | Jul 02, 2018 | 00:46:06 | 210 W | 2.63 w/kg | 10.05 km/h |
| 83 | MARK BUSBY | Feb 24, 2024 | 00:46:59 | 179 W | 2.56 w/kg | 9.84 km/h |
| 84 | Familie Bruin | Apr 22, 2020 | 00:47:09 | 175 W | 2.57 w/kg | 9.81 km/h |
| 85 | Scott Walker | Jan 17, 2018 | 00:47:42 | 216 W | 2.44 w/kg | 9.72 km/h |
| 86 | rob bolton | Mar 28, 2020 | 00:47:57 | 191 W | 2.47 w/kg | 9.64 km/h |
| 87 | Ivan Marecek | Jan 06, 2019 | 00:48:28 | 195 W | 2.44 w/kg | 9.56 km/h |
| 88 | Altar Dagistanli | Jan 05, 2021 | 00:48:47 | 219 W | 2.38 w/kg | 9.48 km/h |
| 89 | Lesquale | Feb 26, 2020 | 00:49:26 | 209 W | 2.40 w/kg | 9.35 km/h |
| 90 | Ellen Westenbroek | Jan 09, 2019 | 00:50:08 | 152 W | 2.41 w/kg | 9.24 km/h |
| 91 | Thomas Schöfer | Aug 05, 2018 | 00:51:01 | 177 W | 2.36 w/kg | 9.08 km/h |
| 92 | Eddy Pronk | May 09, 2020 | 00:52:00 | 186 W | 2.30 w/kg | 8.89 km/h |
| 93 | Hans Petiet | Dec 30, 2018 | 00:52:35 | 163 W | 2.26 w/kg | 8.81 km/h |
| 94 | John Hanson | Jul 14, 2022 | 00:52:49 | 170 W | 2.24 w/kg | 8.75 km/h |
| 95 | veronique druilhet | Mar 10, 2019 | 00:53:16 | 124 W | 2.34 w/kg | 8.70 km/h |
| 96 | Frantxoa A | Apr 15, 2024 | 00:53:36 | 177 W | 2.30 w/kg | 8.63 km/h |
| 97 | Artur Chmielewski | Nov 15, 2021 | 00:53:45 | 128 W | 2.25 w/kg | 8.60 km/h |
| 98 | Mulendra Singh Solanki | May 03, 2017 | 00:54:53 | 195 W | — | 8.45 km/h |
| 99 | Richatd Thorndale | May 16, 2021 | 00:55:56 | 227 W | 2.03 w/kg | 8.27 km/h |
| 100 | Paul Turnbull | Jan 14, 2018 | 00:57:06 | 148 W | 2.13 w/kg | 8.12 km/h |
| 101 | Michele Mirabelli | Feb 14, 2019 | 00:57:43 | 159 W | 2.01 w/kg | 8.03 km/h |
| 102 | michael henne | Nov 22, 2017 | 00:57:53 | 190 W | 2.02 w/kg | 8.01 km/h |
| 103 | kc Claffy | Sep 25, 2018 | 00:58:09 | 118 W | 2.16 w/kg | 7.97 km/h |
| 104 | Lucile CHAZAUX | Feb 25, 2024 | 00:58:57 | 152 W | 2.03 w/kg | 7.84 km/h |
| 105 | W van Koetsveld | Mar 06, 2026 | 01:02:33 | 141 W | 1.88 w/kg | 7.39 km/h |
| 106 | Suesan McLachlan | Feb 05, 2020 | 01:04:04 | 120 W | 1.90 w/kg | 7.23 km/h |
| 107 | mouse jam | Jun 06, 2018 | 01:06:30 | 167 W | 1.76 w/kg | 6.97 km/h |
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