Equestrian Ian Millar of Canada is expected to compete at the 2012 Games in London. If he does, and barring disaster he will, he will compete in his 10th Olympics and set the record for most Olympics competed in. Currently, Ian is tied with sailor Hubert Raudaschl of Austria who also competed in 9 Olympics.
The Marathon
It's the longest Someone
The longest swimming event for men in the Olympics is the 1500 meter freestyle and for women is the 800 meter freestyle.
Longest hunger strike was done by Bhagat Singh &his friends without even water, which lasted for 117 days, when British empire bowed to their demands
That is the 10k Open Water event that debuted at the 2008 Games in Beijing. Lara Ilchenko of Russia won the gold medal in a time of 59 minutes, 27.7 seconds. Prior to the 2008 Olympics, the longest swimming event for women was the 800 meter freestyle.
Way too long!
The Marathon
1500m
Yes. The Marathon is second at 42.195 km and the 20 km walk is third.
Depends on what the question refers to: The longest "running" event is the Marathon, but the longest event in terms of distance in the athletics is the Mens 50 kilometre walk (but you certainly aren't allowed to run in that). Alternatively there are a whole series of events that have been included in every Olympics, therefore there is no single longest running event in terms of being at every Olympics.
Marathon.
It's the longest Someone
The longest event for speed skating is the men's 10,000 meters race, which is equivalent to 10 kilometers.
high jump, blowing the longest and thats it
The longest swimming event for men in the Olympics is the 1500 meter freestyle and for women is the 800 meter freestyle.
Speed Skating
The 400 meter individual medley is the longest medley in the Olympics.