No built in easy way. You could post it in the ideas category!
Two non-easy workarounds I can think of:
- adding “?page_incomplete=4&page_complete=10” your view of a city (http://www.citystrides.com/users/###/cities/####) lets you iterate through the pages if you’re inclined to write a script to scrape them that way.
- Calling the OSM overpass query that CityStrides uses (Overpass Street Query - #14 by 969823ab4485c3f2e393), which should get you a very similar list (minus any changes in your city since it was imported to CityStrides).