Editing Strava rides

My phone wouldn’t get a GPS signal at the start of the ride, so I figured I’d just go instead of freezing my fingers off. Turns out it took about 3 miles for the phone to figure it out. I know those three miles aren’t going to be the difference in much of anything, but I’d kind of like to have them count.

First, do the rules allow editing?

And if so, what’s the best way to do it? I could probably hack the GPX file manually, but that’s probably pretty tedious.

Or should I just forget the miles?