We've modeled the London Pretzel route using the typical standard bike characteristics from Zwift along with rolling resistance data supplied by (Zwift Insider ). For the rider, we modeled a lighter athlete holding roughly 2.5 to 2.7 Watts/Kg.
Use the Time Analysis Tool to adjust Drag (CdA), Average Power, Rider Weight and Rolling Resistance (Crr) to your own specific numbers. For detailed information on specific sections of the route, simply drag over that section on the Time Analysis chart to zoom in (note the data under Route Overview updates to Zoomed Area). For a more customized model tailored specifically to your data and inputs Sign Up For Free and create your own power plan with the London Pretzel route!
Zwift courses do not use real world weather data, but with a real world race and a Premium Subscription you would see data on temperature, humidity, pressure, wind speed and wind direction for the entire course.
Read more about the Advanced Weather chart under our on the FAQs page and see it in action on our Ironman World Championships Demo.
| Interval | Int. Time | Total Time | Int. Dist. | Total Dist. | Grade | Speed | Power |
|---|---|---|---|---|---|---|---|
| #1 | 00:01:13 | 00:01:13 | 0.31 mi | 0.31 mi | +2.01 % | 15.07 mph | 187 watts |
| #2 | 00:01:18 | 00:02:32 | 0.53 mi | 0.84 mi | -2.17 % | 24.30 mph | 137 watts |
| #3 | 00:01:23 | 00:03:56 | 0.45 mi | 1.29 mi | +0.99 % | 19.43 mph | 176 watts |
| #4 | 00:01:24 | 00:05:21 | 0.52 mi | 1.81 mi | -1.04 % | 22.29 mph | 150 watts |
| #5 | 00:01:09 | 00:06:31 | 0.27 mi | 2.08 mi | +3.88 % | 13.70 mph | 201 watts |
| #6 | 00:01:34 | 00:08:05 | 0.53 mi | 2.61 mi | -0.38 % | 20.06 mph | 159 watts |
| #7 | 00:00:42 | 00:08:48 | 0.18 mi | 2.79 mi | +3.11 % | 15.43 mph | 195 watts |
| #8 | 00:01:27 | 00:10:15 | 0.57 mi | 3.36 mi | -2.06 % | 23.69 mph | 136 watts |
| #9 | 00:01:25 | 00:11:40 | 0.44 mi | 3.80 mi | +1.36 % | 18.56 mph | 180 watts |
| #10 | 00:00:38 | 00:12:19 | 0.20 mi | 4.00 mi | +0.18 % | 19.01 mph | 165 watts |
| #11 | 00:02:59 | 00:15:18 | 1.09 mi | 5.09 mi | -0.63 % | 21.90 mph | 155 watts |
| #12 | 00:00:30 | 00:15:49 | 0.18 mi | 5.27 mi | +0.14 % | 20.93 mph | 165 watts |
| #13 | 00:03:50 | 00:19:39 | 1.30 mi | 6.57 mi | +0.06 % | 20.31 mph | 164 watts |
| #14 | 00:01:50 | 00:21:30 | 0.61 mi | 7.18 mi | +0.31 % | 19.71 mph | 167 watts |
| #15 | 00:03:17 | 00:24:48 | 1.11 mi | 8.29 mi | 0.00 % | 20.29 mph | 164 watts |
| #16 | 00:00:52 | 00:25:40 | 0.30 mi | 8.59 mi | -0.92 % | 20.55 mph | 152 watts |
| #17 | 00:00:23 | 00:26:03 | 0.14 mi | 8.73 mi | +0.36 % | 21.03 mph | 169 watts |
| #18 | 00:01:47 | 00:27:51 | 0.52 mi | 9.25 mi | +1.38 % | 17.41 mph | 179 watts |
| #19 | 00:01:37 | 00:29:28 | 0.53 mi | 9.78 mi | +0.07 % | 19.47 mph | 164 watts |
| #20 | 00:01:11 | 00:30:40 | 0.37 mi | 10.15 mi | +0.20 % | 18.85 mph | 166 watts |
| #21 | 00:00:30 | 00:31:10 | 0.20 mi | 10.35 mi | -2.69 % | 24.39 mph | 131 watts |
| #22 | 00:02:47 | 00:33:57 | 1.01 mi | 11.36 mi | -0.34 % | 21.76 mph | 158 watts |
| #23 | 00:03:13 | 00:37:10 | 1.11 mi | 12.47 mi | -0.04 % | 20.65 mph | 164 watts |
| #24 | 00:02:28 | 00:39:39 | 0.84 mi | 13.31 mi | +0.09 % | 20.24 mph | 163 watts |
| #25 | 00:01:28 | 00:41:07 | 0.43 mi | 13.74 mi | +1.34 % | 17.66 mph | 179 watts |
| #26 | 00:00:42 | 00:41:50 | 0.23 mi | 13.97 mi | -0.16 % | 19.68 mph | 162 watts |
| #27 | 00:01:04 | 00:42:54 | 0.42 mi | 14.39 mi | -1.46 % | 23.39 mph | 144 watts |
| #28 | 00:02:05 | 00:45:00 | 0.58 mi | 14.97 mi | +2.09 % | 16.47 mph | 187 watts |
| #29 | 00:00:28 | 00:45:29 | 0.18 mi | 15.15 mi | -3.11 % | 22.39 mph | 125 watts |
| #30 | 00:01:34 | 00:47:03 | 0.53 mi | 15.68 mi | +0.35 % | 20.05 mph | 168 watts |
| #31 | 00:00:34 | 00:47:38 | 0.26 mi | 15.94 mi | -4.04 % | 26.82 mph | 116 watts |
| #32 | 00:01:29 | 00:49:07 | 0.50 mi | 16.44 mi | +0.90 % | 20.15 mph | 175 watts |
| #33 | 00:01:17 | 00:50:25 | 0.47 mi | 16.91 mi | -0.85 % | 21.81 mph | 153 watts |
| #34 | 00:02:04 | 00:52:29 | 0.56 mi | 17.47 mi | +2.15 % | 16.22 mph | 188 watts |
| #35 | 00:00:55 | 00:53:24 | 0.35 mi | 17.82 mi | -2.00 % | 23.07 mph | 139 watts |
| #36 | 00:00:54 | 00:54:18 | 0.32 mi | 18.14 mi | +0.19 % | 21.29 mph | 166 watts |
| #37 | 00:01:46 | 00:56:05 | 0.62 mi | 18.76 mi | -0.26 % | 21.00 mph | 159 watts |
| #38 | 00:00:14 | 00:56:19 | 0.11 mi | 18.87 mi | -5.93 % | 26.88 mph | 107 watts |
| #39 | 00:00:11 | 00:56:30 | 0.08 mi | 18.95 mi | -0.90 % | 26.70 mph | 152 watts |
| #40 | 00:01:04 | 00:57:35 | 0.36 mi | 19.31 mi | +0.14 % | 20.01 mph | 165 watts |
| #41 | 00:01:25 | 00:59:00 | 0.29 mi | 19.60 mi | +4.44 % | 12.18 mph | 204 watts |
| #42 | 00:00:18 | 00:59:19 | 0.07 mi | 19.67 mi | +2.31 % | 13.38 mph | 192 watts |
| #43 | 00:02:29 | 01:01:49 | 0.28 mi | 19.95 mi | +9.62 % | 6.72 mph | 217 watts |
| #44 | 00:01:24 | 01:03:13 | 0.22 mi | 20.17 mi | +5.73 % | 9.41 mph | 209 watts |
| #45 | 00:01:22 | 01:04:36 | 0.25 mi | 20.42 mi | +4.62 % | 10.79 mph | 203 watts |
| #46 | 00:01:06 | 01:05:42 | 0.14 mi | 20.56 mi | +7.99 % | 7.73 mph | 213 watts |
| #47 | 00:01:38 | 01:07:21 | 0.21 mi | 20.77 mi | +7.68 % | 7.79 mph | 214 watts |
| #48 | 00:00:20 | 01:07:41 | 0.13 mi | 20.90 mi | -7.62 % | 23.24 mph | 94 watts |
| #49 | 00:01:03 | 01:08:44 | 0.39 mi | 21.29 mi | +0.41 % | 22.47 mph | 168 watts |
| #50 | 00:00:27 | 01:09:11 | 0.14 mi | 21.43 mi | +0.80 % | 18.55 mph | 174 watts |
| #51 | 00:00:22 | 01:09:34 | 0.14 mi | 21.57 mi | -3.01 % | 22.12 mph | 130 watts |
| #52 | 00:01:09 | 01:10:43 | 0.57 mi | 22.14 mi | -4.92 % | 29.59 mph | 109 watts |
| #53 | 00:00:39 | 01:11:23 | 0.27 mi | 22.41 mi | -5.16 % | 25.05 mph | 110 watts |
| #54 | 00:00:55 | 01:12:18 | 0.46 mi | 22.87 mi | -6.32 % | 30.13 mph | 99 watts |
| #55 | 00:00:39 | 01:12:58 | 0.29 mi | 23.16 mi | -3.95 % | 26.67 mph | 119 watts |
| #56 | 00:00:35 | 01:13:33 | 0.23 mi | 23.39 mi | +0.16 % | 23.88 mph | 166 watts |
| #57 | 00:00:28 | 01:14:01 | 0.16 mi | 23.55 mi | 0.00 % | 20.29 mph | 164 watts |
| #58 | 00:01:21 | 01:15:22 | 0.33 mi | 23.88 mi | +2.88 % | 14.50 mph | 192 watts |
| #59 | 00:00:20 | 01:15:43 | 0.11 mi | 23.99 mi | -2.15 % | 19.24 mph | 136 watts |
| #60 | 00:01:51 | 01:17:34 | 0.63 mi | 24.62 mi | +0.12 % | 20.51 mph | 165 watts |
| #61 | 00:00:34 | 01:18:09 | 0.13 mi | 24.75 mi | +4.43 % | 13.59 mph | 203 watts |
| #62 | 00:01:29 | 01:19:39 | 0.47 mi | 25.22 mi | -0.19 % | 18.97 mph | 161 watts |
| #63 | 00:01:28 | 01:21:07 | 0.48 mi | 25.70 mi | -0.03 % | 19.49 mph | 162 watts |
| #64 | 00:01:25 | 01:22:32 | 0.55 mi | 26.25 mi | -1.33 % | 23.38 mph | 147 watts |
| #65 | 00:00:20 | 01:22:53 | 0.13 mi | 26.38 mi | -0.38 % | 22.82 mph | 159 watts |
| #66 | 00:00:59 | 01:23:53 | 0.31 mi | 26.69 mi | +0.84 % | 18.71 mph | 174 watts |
| #67 | 00:03:17 | 01:27:10 | 1.09 mi | 27.78 mi | +0.01 % | 19.96 mph | 162 watts |
| #68 | 00:01:16 | 01:28:26 | 0.44 mi | 28.22 mi | -0.11 % | 20.73 mph | 163 watts |
| #69 | 00:00:18 | 01:28:44 | 0.09 mi | 28.31 mi | +2.82 % | 17.60 mph | 195 watts |
| #70 | 00:00:37 | 01:29:21 | 0.21 mi | 28.52 mi | -1.19 % | 20.05 mph | 149 watts |
| #71 | 00:00:38 | 01:30:00 | 0.27 mi | 28.79 mi | -2.63 % | 25.33 mph | 131 watts |
| #72 | 00:00:38 | 01:30:38 | 0.23 mi | 29.02 mi | -0.27 % | 21.65 mph | 161 watts |
| #73 | 00:01:22 | 01:32:00 | 0.33 mi | 29.35 mi | +3.12 % | 14.33 mph | 196 watts |
| #74 | 00:03:00 | 01:35:01 | 0.45 mi | 29.80 mi | +6.44 % | 9.04 mph | 212 watts |
| #75 | 00:01:49 | 01:36:50 | 0.31 mi | 30.11 mi | +5.07 % | 10.31 mph | 207 watts |
| #76 | 00:03:08 | 01:39:58 | 0.55 mi | 30.66 mi | +4.94 % | 10.50 mph | 205 watts |
| #77 | 00:00:42 | 01:40:41 | 0.15 mi | 30.81 mi | +3.42 % | 12.26 mph | 197 watts |
| #78 | 00:00:32 | 01:41:13 | 0.16 mi | 30.97 mi | -0.61 % | 18.11 mph | 156 watts |
| #79 | 00:01:01 | 01:42:14 | 0.37 mi | 31.34 mi | -0.54 % | 21.75 mph | 157 watts |
| #80 | 00:00:50 | 01:43:05 | 0.14 mi | 31.48 mi | +7.61 % | 9.68 mph | 212 watts |
| #81 | 00:00:30 | 01:43:35 | 0.22 mi | 31.70 mi | -7.26 % | 26.65 mph | 94 watts |
| #82 | 00:00:10 | 01:43:46 | 0.11 mi | 31.81 mi | -8.56 % | 38.53 mph | 91 watts |
| #83 | 00:00:49 | 01:44:35 | 0.48 mi | 32.29 mi | -5.17 % | 34.52 mph | 107 watts |
| #84 | 00:00:26 | 01:45:02 | 0.28 mi | 32.57 mi | -9.59 % | 37.65 mph | 81 watts |
| #85 | 00:00:10 | 01:45:12 | 0.10 mi | 32.67 mi | -3.30 % | 35.20 mph | 126 watts |
| #86 | 00:00:29 | 01:45:42 | 0.25 mi | 32.92 mi | -4.80 % | 30.57 mph | 110 watts |
| #87 | 00:00:59 | 01:46:41 | 0.39 mi | 33.31 mi | -0.25 % | 23.84 mph | 160 watts |
| #88 | 00:02:25 | 01:49:07 | 0.74 mi | 34.05 mi | +0.95 % | 18.39 mph | 174 watts |
| #89 | 00:01:17 | 01:50:24 | 0.41 mi | 34.46 mi | +0.39 % | 19.24 mph | 168 watts |
| Totals | 01:50:24 | 01:50:24 | 34.50 mi | 34.50 mi | NA | 18.75 mph | 169.02 watts |
| Distance | 34.5 mi | |
|---|---|---|
| Time | 01:50:24 | |
| Lead-In | ||
| Avg. Speed | 18.75 mph | |
| Avg. Power | 169.02 w | |
| Normalized Power | 174.98 w | |
| Variability Index | 1.04 | |
| Intensity Factor | 0.80 | |
| Training Stress Score | 117 | |
| Watts/Kg | 2.57 | |
| Work | 1120 kJ | |
| Weighted Grade | 0.88% | |
| Effective Elevation | +1,620 / -1,624 ft | |
| Avg. Yaw | 0.00 ° | |
| Avg. CdA | 0.3034 | |
| Avg. Crr | 0.00400 | |
| Route | London Pretzel | |
| Bike | Zwift Road Bike | |
| Cheat Sheets | bestbikesplit.com/hints/158172 | |
| Additional Info. | Zwift Insider | |
Note: All ERG and MRC files are compatible with Zwift, TrainerRoad, RGT and Rouvy. For more information on all downloadable file types please see the File Downloads & Device Settings FAQs.