We've modeled the Serpentine 8 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 Serpentine 8 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.
This route has a short lead-in of about 10 to 14 minutes of added time in addition to your estimated time to complete.
| Interval | Int. Time | Total Time | Int. Dist. | Total Dist. | Grade | Speed | Power |
|---|---|---|---|---|---|---|---|
| #1 | 00:00:34 | 00:00:34 | 0.19 mi | 0.19 mi | -0.98 % | 19.75 mph | 150 watts |
| #2 | 00:00:21 | 00:00:55 | 0.12 mi | 0.31 mi | +0.10 % | 20.99 mph | 165 watts |
| #3 | 00:00:26 | 00:01:22 | 0.15 mi | 0.46 mi | -0.08 % | 20.47 mph | 163 watts |
| #4 | 00:01:28 | 00:02:50 | 0.37 mi | 0.83 mi | +2.65 % | 14.87 mph | 190 watts |
| #5 | 00:01:02 | 00:03:53 | 0.29 mi | 1.12 mi | +1.20 % | 16.72 mph | 177 watts |
| #6 | 00:00:25 | 00:04:18 | 0.10 mi | 1.22 mi | +3.09 % | 14.79 mph | 195 watts |
| #7 | 00:02:22 | 00:06:41 | 0.51 mi | 1.73 mi | +3.33 % | 12.82 mph | 196 watts |
| #8 | 00:00:24 | 00:07:05 | 0.11 mi | 1.84 mi | +0.55 % | 16.24 mph | 170 watts |
| #9 | 00:00:32 | 00:07:38 | 0.15 mi | 1.99 mi | +1.89 % | 16.70 mph | 185 watts |
| #10 | 00:00:13 | 00:07:51 | 0.07 mi | 2.06 mi | -2.11 % | 19.39 mph | 138 watts |
| #11 | 00:00:26 | 00:08:17 | 0.15 mi | 2.21 mi | +0.25 % | 20.53 mph | 167 watts |
| #12 | 00:00:06 | 00:08:24 | 0.04 mi | 2.25 mi | 0.00 % | 19.70 mph | 163 watts |
| #13 | 00:00:35 | 00:08:59 | 0.18 mi | 2.43 mi | +1.38 % | 18.38 mph | 181 watts |
| #14 | 00:00:20 | 00:09:20 | 0.09 mi | 2.52 mi | +2.14 % | 16.31 mph | 188 watts |
| #15 | 00:00:21 | 00:09:41 | 0.11 mi | 2.63 mi | +0.12 % | 17.77 mph | 165 watts |
| #16 | 00:00:11 | 00:09:52 | 0.08 mi | 2.71 mi | -6.24 % | 24.68 mph | 100 watts |
| #17 | 00:00:18 | 00:10:11 | 0.10 mi | 2.81 mi | +3.92 % | 20.75 mph | 203 watts |
| #18 | 00:00:12 | 00:10:23 | 0.05 mi | 2.86 mi | +1.63 % | 13.73 mph | 182 watts |
| #19 | 00:00:36 | 00:10:59 | 0.22 mi | 3.08 mi | -2.53 % | 21.26 mph | 132 watts |
| #20 | 00:01:10 | 00:12:10 | 0.50 mi | 3.58 mi | -3.02 % | 25.54 mph | 128 watts |
| #21 | 00:00:28 | 00:12:39 | 0.20 mi | 3.78 mi | -1.87 % | 24.86 mph | 141 watts |
| #22 | 00:00:45 | 00:13:25 | 0.31 mi | 4.09 mi | -2.89 % | 24.42 mph | 127 watts |
| #23 | 00:00:30 | 00:13:55 | 0.20 mi | 4.29 mi | -2.42 % | 23.92 mph | 132 watts |
| #24 | 00:00:13 | 00:14:08 | 0.09 mi | 4.38 mi | +0.27 % | 23.89 mph | 167 watts |
| #25 | 00:00:13 | 00:14:22 | 0.06 mi | 4.44 mi | +2.65 % | 16.59 mph | 190 watts |
| #26 | 00:00:58 | 00:15:20 | 0.22 mi | 4.66 mi | +2.78 % | 13.50 mph | 192 watts |
| #27 | 00:00:14 | 00:15:34 | 0.06 mi | 4.72 mi | +2.44 % | 14.20 mph | 191 watts |
| #28 | 00:00:30 | 00:16:05 | 0.14 mi | 4.86 mi | +1.27 % | 16.22 mph | 179 watts |
| #29 | 00:00:07 | 00:16:12 | 0.04 mi | 4.90 mi | 0.00 % | 17.67 mph | 164 watts |
| #30 | 00:00:45 | 00:16:58 | 0.29 mi | 5.19 mi | -1.82 % | 23.06 mph | 140 watts |
| #31 | 00:00:34 | 00:17:32 | 0.26 mi | 5.45 mi | -2.91 % | 26.93 mph | 129 watts |
| #32 | 00:00:28 | 00:18:00 | 0.18 mi | 5.63 mi | -0.14 % | 23.03 mph | 161 watts |
| #33 | 00:00:56 | 00:18:57 | 0.30 mi | 5.93 mi | +0.55 % | 18.77 mph | 170 watts |
| #34 | 00:00:40 | 00:19:38 | 0.24 mi | 6.17 mi | -0.73 % | 20.93 mph | 155 watts |
| #35 | 00:00:22 | 00:20:01 | 0.13 mi | 6.30 mi | 0.00 % | 20.26 mph | 164 watts |
| #36 | 00:00:44 | 00:20:45 | 0.21 mi | 6.51 mi | +2.58 % | 17.23 mph | 224 watts |
| #37 | 00:00:11 | 00:20:57 | 0.06 mi | 6.57 mi | -0.43 % | 17.83 mph | 159 watts |
| #38 | 00:00:09 | 00:21:06 | 0.05 mi | 6.62 mi | +2.65 % | 17.44 mph | 190 watts |
| #39 | 00:00:44 | 00:21:51 | 0.19 mi | 6.81 mi | +1.66 % | 15.76 mph | 183 watts |
| #40 | 00:00:54 | 00:22:45 | 0.22 mi | 7.03 mi | +2.77 % | 14.21 mph | 191 watts |
| #41 | 00:00:20 | 00:23:06 | 0.08 mi | 7.11 mi | +2.86 % | 13.70 mph | 196 watts |
| #42 | 00:00:30 | 00:23:37 | 0.14 mi | 7.25 mi | +1.37 % | 15.87 mph | 180 watts |
| #43 | 00:00:19 | 00:23:56 | 0.08 mi | 7.33 mi | +3.18 % | 14.75 mph | 196 watts |
| #44 | 00:00:37 | 00:24:33 | 0.13 mi | 7.46 mi | +3.59 % | 12.56 mph | 198 watts |
| #45 | 00:00:30 | 00:25:04 | 0.12 mi | 7.58 mi | +2.02 % | 14.59 mph | 188 watts |
| #46 | 00:00:54 | 00:25:58 | 0.21 mi | 7.79 mi | +3.00 % | 13.77 mph | 195 watts |
| #47 | 00:00:43 | 00:26:41 | 0.17 mi | 7.96 mi | +2.61 % | 13.86 mph | 190 watts |
| #48 | 00:00:20 | 00:27:02 | 0.12 mi | 8.08 mi | -3.87 % | 21.68 mph | 120 watts |
| #49 | 00:00:16 | 00:27:18 | 0.09 mi | 8.17 mi | +4.38 % | 19.42 mph | 218 watts |
| #50 | 00:00:24 | 00:27:43 | 0.10 mi | 8.27 mi | +0.96 % | 15.40 mph | 176 watts |
| #51 | 00:00:21 | 00:28:04 | 0.12 mi | 8.39 mi | -1.81 % | 20.81 mph | 139 watts |
| #52 | 00:00:20 | 00:28:25 | 0.14 mi | 8.53 mi | -1.58 % | 24.54 mph | 143 watts |
| #53 | 00:00:12 | 00:28:38 | 0.08 mi | 8.61 mi | -0.16 % | 21.41 mph | 161 watts |
| #54 | 00:00:17 | 00:28:55 | 0.10 mi | 8.71 mi | -0.74 % | 20.27 mph | 153 watts |
| #55 | 00:00:18 | 00:29:14 | 0.10 mi | 8.81 mi | +1.90 % | 19.47 mph | 185 watts |
| #56 | 00:00:30 | 00:29:44 | 0.17 mi | 8.98 mi | -1.65 % | 20.45 mph | 143 watts |
| #57 | 00:00:15 | 00:30:00 | 0.09 mi | 9.07 mi | -0.28 % | 20.70 mph | 159 watts |
| #58 | 00:01:08 | 00:31:09 | 0.53 mi | 9.60 mi | -3.28 % | 27.57 mph | 123 watts |
| #59 | 00:00:08 | 00:31:17 | 0.07 mi | 9.67 mi | -3.40 % | 29.21 mph | 122 watts |
| #60 | 00:00:10 | 00:31:28 | 0.07 mi | 9.74 mi | -1.46 % | 23.62 mph | 144 watts |
| #61 | 00:00:18 | 00:31:46 | 0.10 mi | 9.84 mi | -1.07 % | 20.84 mph | 150 watts |
| #62 | 00:00:15 | 00:32:01 | 0.09 mi | 9.93 mi | -2.32 % | 21.60 mph | 135 watts |
| #63 | 00:00:31 | 00:32:33 | 0.20 mi | 10.13 mi | -2.76 % | 22.29 mph | 130 watts |
| #64 | 00:00:12 | 00:32:46 | 0.07 mi | 10.20 mi | -2.76 % | 19.07 mph | 131 watts |
| #65 | 00:00:20 | 00:33:06 | 0.13 mi | 10.33 mi | 0.00 % | 22.67 mph | 164 watts |
| #66 | 00:00:39 | 00:33:46 | 0.17 mi | 10.50 mi | +2.73 % | 15.55 mph | 192 watts |
| #67 | 00:01:10 | 00:34:57 | 0.25 mi | 10.75 mi | +3.14 % | 12.96 mph | 195 watts |
| #68 | 00:00:11 | 00:35:08 | 0.04 mi | 10.79 mi | +1.70 % | 14.24 mph | 183 watts |
| #69 | 00:00:34 | 00:35:43 | 0.21 mi | 11.00 mi | -2.62 % | 22.19 mph | 131 watts |
| #70 | 00:00:33 | 00:36:16 | 0.22 mi | 11.22 mi | -1.73 % | 24.17 mph | 143 watts |
| #71 | 00:00:13 | 00:36:29 | 0.08 mi | 11.30 mi | -0.94 % | 21.74 mph | 151 watts |
| #72 | 00:00:27 | 00:36:57 | 0.20 mi | 11.50 mi | -2.71 % | 25.53 mph | 130 watts |
| #73 | 00:00:16 | 00:37:13 | 0.11 mi | 11.61 mi | -0.23 % | 23.82 mph | 161 watts |
| #74 | 00:00:53 | 00:38:07 | 0.28 mi | 11.89 mi | +0.62 % | 18.88 mph | 171 watts |
| Totals | 00:38:07 | 00:38:07 | 11.87 mi | 11.87 mi | NA | 18.69 mph | 167.99 watts |
| Distance | 11.87 mi | |
|---|---|---|
| Time | 00:38:07 | |
| Lead-In | 10 - 14 minutes | |
| Avg. Speed | 18.69 mph | |
| Avg. Power | 167.99 w | |
| Normalized Power | 174.05 w | |
| Variability Index | 1.04 | |
| Intensity Factor | 0.79 | |
| Training Stress Score | 40 | |
| Watts/Kg | 2.55 | |
| Work | 384 kJ | |
| Weighted Grade | 0.49% | |
| Effective Elevation | +642 / -642 ft | |
| Avg. Yaw | 0.00 ° | |
| Avg. CdA | 0.3088 | |
| Avg. Crr | 0.00400 | |
| Route | Serpentine 8 | |
| Bike | Zwift Road Bike | |
| Cheat Sheets | bestbikesplit.com/hints/229511 | |
| 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.
