Marc Rinzler is a firefighter and paramedic in Orange County, California, U.S.A. who is also the world record holder in the Megacolossus, also known as The Mega or Mega Colossus in Huntington Beach, California.
Rinzler's The Mega record was set in 2000 in 1 hour 28 minutes 45 seconds.
The Mega is a Huntington State Beach Lifeguards Association-sponsored endurance contest in the soft sand and offshore, occasionally rough and cold, waters of the Pacific Beach in mid-July of each year. The Mega consists of 5 beach runs totaling 8.5 miles and 4 ocean swims totaling 4000 yards. It is an informal event with two aid stations on the course. There are no entry fees, no awards, no wetsuits, no fins, no shoes. It is open to both municipal and state lifeguards. It is a celebration of life. The lifeguards who first started this said it was 'a gathering of friends to celebrate life.'
The eight-mile running course of The Mega starts at the mouth of the Santa Ana River and goes north to Warner Avenue, at the northern end of Bolsa Chica State Beach. Interspersed are four ocean swims to offshore buoy markers, including one swim around the 565-meter-long Huntington Beach Municipal Pier.