Originally Posted by genejockey

The climbs hereabouts tend to be covered in trees, so I've had the experience where the Garmin had me way off the road, which would seriously impact the elevation - since the hill itself is quite steep, so the road switches back a lot. And when I tried to make another climb a 'Starred Segment', I'd get half a mile up it and the Garmin would tell me I was off the segment and stop.