can anyone verify if these trails still exist or ever existed? they seemed to have been added 10 years ago with the source as "OSM GPX". however, i don't see anything that could tell me its a trail on the aerial imagery and the lines are very erratic so i'm not sure. i think possibly those gpx traces had bad signal due to trees and were traced anyway. i also don't see anything about these trails online.

The border of the city of Berkeley is marked incorrectly here - it does not include Weldon Avenue, as it follows I70 to the eastern edge. The official map with the correct border is here:
https://www.cityofberkeley.us/egov/apps/map/viewer.egov?view=map;id=1