The Beaver Races are two sub-games in The Legend of Zelda: Majora's Mask.
As for all Majora's Mask sub-games, rankings for these games are hosted by N64HS at [1].
Beaver Race 1
Strategy
The strategy in the beaver race is to jump out of the water as often as you can as this is actually faster then just swimming through the rings. So it's just about planning the angle you'll get after coming out of the water so that you have the straightest line to the next ring and that you don't actually bump the ring with your head or jump over or aside of it.
Video
- 40.40 seconds by PY Lemire (WR)
Beaver Race 2
Strategy
Strat here
Video
- 34.48 seconds by PY Lemire (WR)