The Yukon Canoe and Kayak Club hold a downriver race on the Yukon River every August.  The 20 kilometer race is mostly non-competitive and allows recreational paddlers to get out on a section of river they might not normally paddle.

The 1999 coverage was excellent, so without further delay here are the links:

[ Whitehorse Star by Michael Onesi | Yukon News by Jillian Rogers ]