This is a from a file from Strava generated on an iPhone.
Is there a way to convert it to gpx?
I don't think you will get any useful answers here, as this is not a Textmate specific problem. But since I am at it: have you considered simply exporting the activity from Strava as GPX? There are even automatic services for doing that (tapiriik) if you don't want to do it manually. In case you have more questions I suggest you reply to my e-mail address and not the TxMt list.
Regards,
Carsten