I haven't run outside with it yet, just treadmill, because I had foot surgery last June, but I was just released TODAY by my surgeon so it will be happening soon. So I haven't had the chance to try out the new GPS/satellite capabilities. BUT I have done the "Time Sync" with GPS from within my house and I get a lock within 10 seconds! Inside my house! I have never been able to do that with any Garmin, it just won't connect from within the house, I always had to go outside on the porch or the front door. Now I can't wait to get it outside!