" Examples include the London to Brighton run in England which is just over 54 miles (87. 085 km), the Comrades Marathon run between Pietermaritzburg and Durban in South Africa which is about 89 km (55 . 3 miles), and the Badwater Ultramarathon between Death Valley and Mount Whitney in the United States which is 135 miles (215 km). Road running is unique among athletic events because in many cases first time amateurs are welcome to participate in the same event as members of running clubs and even current world-class champions. Professional road racing's governing body is the IAAF. Competitors from around the world participate in what is dubbed the "elite" races for cash prizes. Kenyans and Ethiopians are renowned for their skill and it is rare for a race's top finishers not to include competitors from these countries. Spira Running Shoes Road races are often community-wide events that highlight or raise money for an issue or project. In the USA, Susan G. "

" Because jogging is inefficient, it's often associated with poor form. Joggers, or runners who are jogging, sometimes move in ways that wouldn't be done in a competitive running situation: excessively bounding into the air, landing heavily on the heel, carrying the arms too high, and so forth. For these reasons, "jogger" and "jogging" are considered derogatory terms by some athletes who consider themselves runners. Other people use the terms "running" and "jogging" interchangeably, and see nothing derogatory about "jogging". Jogging is also used for active recovery intervals during interval training. The runner who may just have completed a fast 400 meter repetition at a sub-5-minute mile pace, may drop to an 8 minute mile pace for a recovery lap. The jog might be carried out in much poorer, looser form whose purpose is to "shake out" the body and maintain circulation to eliminate the waste products of exercise metabolism. Ryka Running Shoes Competitive running Perhaps the most basic of athletic contests, running races are simply contests to determine which of the competitors is able to run a certain distance fastest. Today, competitive running events make up the core of the sport of athletics. "