The longest race is the 50 Km walk. The longest running race is the Marathon.
i think its the 1500m but im not 100% sure
The Coca-Cola 600 is currently the longest sanctioned Nascar race.
The MarathonThe longest running race is the marathon at 42.195KM (26miles 385yards)The longest foot race is the mens 50K walkThe longest race is the triathalon - 1500M swim + 40KM cycle + 10KM run
The English Grand National, not a flat race but it's run in the flat season, making it the longest race in the flat race season.
The longest race is the 50 KM Racewalk. It will be contested on Sat. Aug 11, and starts at 9:00 London time.
The Great Serum Race
The Self-Transcendence 3100 mile race is the world's longest certified footrace according to its organizers.
over 60 miles is germanys longest racing track or the longest track in the world
The longest race of the Triple Crown is the Belmont Stakes run at 1 1/2 miles (12 furlongs).