These are strategies for various challenges that can be completed during gameplay in Super Mario 64. NGC-Elites (aka scopinfo.com) hosts SMS speed run competition. The current player ranked first is Alex Penev, who holds 5 of the game's 8 World Records.
Blooper Surfing Safari
Strat here
Red Coins on the Water
Strat here
Il Piantissimo's Sand Sprint
Strat here
Scrubbing Sirena Beach
Strat here
Red Coins in the Hotel
Strat here
Il Piantissimo's Surf Swim
Strat here
Il Piantissimo's Crazy Climb
Strat here
Piantas in Need
Strat here