I’ve always wondered if the Strava estimated power was close to real power. So on a couple of specific segments I’ve run my phone using Strava and my Garmin using a power meter so that I can compare.
You can see from the screenshots below the differences.
In summary for smaller segments it was within 5%, drifing out to 13% on a 20 minute section, so you would assume it would drift further out for a full ride, something I will try in the near future. Interesting side note that the phone often gave me a second quicker time….
| Segment time | Real Power | Estimated Power | Difference | |
| Langbar Reverse | 20:55 | 246 | 214 | -13% |
| Roker Lane | 02:30 | 367 | 356 | -3% |
| Crekeld Lane | 05:41 | 299 | 288 | -4% |
Langbar Reverse
Roker Lane
Creskeld Lane
