Original: Rowing regattas Henley Royal Regatta , held every year on the river Thames is the most prestigious British event Royal St. John 's Regatta , held every year on Quidi Vidi Lake in St. John 's , Newfoundland , North America 's oldest annual sporting event .
Simplified: Rowing regattas Henley Royal Regatta , held every year on the river Thames is the most prestigious British event The Boat Race is a rowing race between the Oxford University Boat Club and the Cambridge University Boat Club .