Flight plans
Yes. Hangar Addons has 1 community flight plan from Austin Bergstrom International Airport (KAUS) to San Diego International Airport (KSAN), free to download.
The great-circle distance is about 1,010 nautical miles. The flight plans here estimate around 2 h 15 min in the air. Routed flight plans are usually a little longer than the direct line.
The plans here are made for A20N. Each plan page lists its aircraft, route and waypoints.