Hey @Ian11,
We strive to bring in new updates from OSM in a timely manner while still ensuring fairness, correctness, and completeness of data.
We work with a company called Mapbox to provide most of the actual maps that athletes see, including those that are used to draw and display Routes. You can read more about what goes into those maps here. Like Strava, Mapbox uses OSM, though the rate of ingestion of new changes in OSM does not always line up between the two. This means that what you may see on the maps (from Mapbox) may be slightly different than what actually gets drawn when you attempt to make a Route inside Strava, especially for very recent OSM changes.
OSM relies on many contributors, not just yours. In addition, OSM and Mapbox are just some of the data sources that Strava integrates. As a result, changes you make may not be reflected exactly the way you may expect them on Strava. For example, if you mark a road as closed to bicycle traffic, that road may still be included in suggested cycling routes if other data sources indicate that the road is open to bicycles.
OK - thanks for the background. So would you expect my minor corrections to OSM to reach Strava in a couple of days or does it usually take much longer ? (it now shows correctly in OSM but not yet in Strava). I've not corrected OSM before so I'm not 100% sure I did it correctly.
Hey @Ian11,
Unfortunately, I can't confirm a definite time frame but I would expect the change to take a few weeks or more.
If your changes were accepted in OSM, it's only a matter of time before STRAVA basemaps are updated. I've spent a lot of time correcting streets, sidewalks, crosswalks, trails, etc. in OSM and they've all eventually shown up. One thing to check is when you save your edits in OSM, if you're sure your changes are correct, uncheck the "I would like someone to review my edits." box.