1) Garmin GPS unit report: 1927m
2) Garmin website from gpx: 1332m
3) BikeHike website from the same gpx: 1749m
4) BikeHike hand drawn map: 1530m
5) Estimate in spreadsheet using the main climb differences: 1300m
Maybe Garmin Connect is better at this than Bikehike? Any previous experience on this?