Originally Posted by
jadocs
Mine does too, however I have noticed on a few rides that have uploaded, that the average speed in Strava has been .1 mph on the low side. Example, sometimes a 20mph average on the Bolt with a speed sensor shows up in Strava as 19.9 mph. Not sure what is going on there.
The most likely cause is that Strava and your Bolt have different thresholds for what they consider to be moving, so average moving speeds will sometimes be different between the two.