The Missouri River 340 www.rivermiles.com at 339 statute miles has taken place annually each summer since 2006. The date changes from late July through mid-August depending upon the date of the full moon. It starts on a Tuesday morning each time. Though there are other canoe and kayak races that are longer, none of them go non-stop from beginning to end and are held entirely on water.
There is no record of the longest distance traveled by a one man canoe. However, the longest distance traveled in a canoe in general was in a Source to Sea expedition which was 2,150 miles in length.
At current the longest car race in the world is the Around the World in 80 Days Rally, the race initially covers 18,000 miles in total and takes around three months to complete.
Liffey Descent Canoe Race was created in 1960.
The longest race is the 50 Km walk. The longest running race is the Marathon.
The Coca-Cola 600 is currently the longest sanctioned Nascar race.
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.
Hawaiki Nui Va'A World Championship Canoe Race - 1997 TV was released on: USA: 3 March 1997
The Great Serum Race
The Cambridge and oxford boat race is the most famous race
The Self-Transcendence 3100 mile race is the world's longest certified footrace according to its organizers.
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
Indy 500
The Race Around Ireland is an annual 2,170km nonstop ultra marathon cycling race. The race covers an entire lap of the country and the 4th edition will start on 9th September 2012. www.racearoundireland.com