Summer parking is a challenge at both of these trailheads. Arrive by 8AM on weekends or plan to ride the shuttle. Glacier Gorge TH is preferred for this trail but has very limited parking. We hiked in on the main trail by Alberta Falls which is great during snowmelt but this trail is pretty crowded. The fire trail on the way back was completely deserted and very peaceful. Loch is beautiful, pack snacks or a lunch - this climb will make you hungry.