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
Athens Classic Marathon Kandie in 2014, while Rasa Drazdauskaitė's run of 2:31:06 in 2010 is the quickest by a woman on the course. In 2016, a refugee team competed in the concurrent 5 kilometre road race. Key: Athens Classic Marathon The Athens Classic (authentic) Marathon is an annual marathon road race held in Athens, Greece, normally in early November. The race attracted 43,000 competitors in 2015 of which 16,000 were for the 42.195 km course, both numbers being an all-time record for the event. The rest of the runners competed in the concurrent 5 and 10 kilometres road races and the racewalking contest.