Physiology of marathons certain physiological characteristics of marathon runners exist. The differing efficiency of certain physiological features in marathon runners evidence the variety of finishing times among elite marathon runners that share similarities in many physiological characteristics. Aside from large aerobic capacities and other biochemical mechanisms, external factors such as the environment and proper nourishment of a marathon runner can further the insight as to why marathon performance is variable despite ideal physiological characteristics obtained by a runner. The first marathon ever run was an unintentional 25 mile trek performed by Pheidippides. Pheidippides was a Greek soldier who ran to Athens from the
Pittsburgh Marathon with a new title sponsor, Dick's Sporting Goods, and renewed interest in the race. The 1988 and 2000 races were USA Olympic Trials for women and men, that were held separately from the regular event although both were held over the same course. Aside from the main marathon event, several races occur during the weekend of the marathon, including a half marathon, two to five person marathon relay, 5k race, and "kids marathon." All races except for the "kids marathon" and 5k utilize the same route and starting time as the marathon. Attendance and popularity of the events has risen