Outdoor Vancouver posted an an excellent information page:
Rating: Difficult
Distance: 15 km
Net Elevation Change*: 889 m
Highest Point: 1,628 m
Time Needed: 7 Hours
Type: Out-and-back
Season: July – September
Dogs Allowed: No (not permitted in the Rainbow Mountain Alpine Trail Network)
Est. Driving Time from Vancouver: 2 Hours
Iceberg Lake Hike in Whistler
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