Originally Posted by
terrymorse
I was riding in hilly terrain, so any GPS inaccuracies could have put me up a steep slope or down a ravine.
This is my observation when using Garmin's elevation correction for mountainous switchback rides. On each turn the GPS drops me off the cliff and then climbs me back up adding 1000s of feet to the ride. It makes me look good but i switch this feature off. Regrettably it seems permanently activated when using the Connect route planning function, so I defer to RWGPS when planning a ride.