This weekend the Head of the Charles Regatta celebrates its 50th running. Originally a dozen races over a couple of hours among roughly 200 competitors, the event now hosts more than 10,000 athletes in 55 classes over two days. It has done great things, as have many of its alumni.

Norm Bellingham,Harvard

1988 Olympic gold medalist in canoe-kayak

Anderson Cooper,Yale

Host of Anderson Cooper 360° on CNN

Wyc Grousbeck,Princeton

CEO of the Celtics

Bill McNabb,Dartmouth

CEO of Vanguard

Jane Musky,Boston University

Emmy-nominated production designer

Heide Stefanyshyn-Piper,MIT

Astronaut, Atlantis and Endeavour

Cameron and Tyler WinklevossHarvard

Disputed Facebook cofounders

PHOTOESSDRAS M. SUAREZ/THE BOSTON GLOBE/GETTY IMAGES (ROWING)

HOLE YARDS PAR R1 R2 R3 R4
OUT
HOLE YARDS PAR R1 R2 R3 R4
IN
Eagle (-2)
Birdie (-1)
Bogey (+1)
Double Bogey (+2)