The 5 Peaks running series is famous for great climbs and fast descents, and Blackcomb mountain is a great venue for this type of race. Choose from the 6.5k Sport course or the 10.6k Enduro course both of which travel by Blackcomb Lake. There is also a 1k Children's challenge and a 3k timed kids race. Please note that you will need a gondola pass.
More Information: http://www.5peaks.com/shop/whistler-blackcomb-race-4