At 3000 rows with you as the only writer, both are fine and speed won't be your deciding factor. Pick on what you'd miss:
- Supabase gives you auth, storage for trail photos, and a dashboard to edit rows. If you ever want users to submit trails, it's all there.
- Turso is nice if you want plain SQLite with the file locally in dev and replicas close to users. You'd bring your own auth.
If you already know Supabase, stay. The "edge is faster" part saves milliseconds that nobody reading about trails will notice.