Marathons at the Olympics Olympics marked the introduction of the now standard distance of 26 miles, 385 yards (42.195 km). However, it was not until the 1924 Paris Olympics that this distance became the standard at the Olympics. The Olympic marathon proved immediately popular in the Western world and quickly spawned numerous long-running annual races, including the Boston Marathon in 1897, the Tour de Paris Marathon in 1902, the Yonkers Marathon in 1907, and the London Polytechnic Marathon in 1909. Such marathons played a key role in the expansion of the road running movement internationally over the course of the 20th century. It has
Half marathon Half marathon A half marathon is a road running event of 21.0975 km (13 mi 192½ yd)—half the distance of a marathon. It is common for a half marathon event to be held concurrently with a marathon, using almost the same course with a late start, an early finish or shortcuts. If finisher medals are awarded, the medal or ribbon may differ from those for the full marathon. The half marathon is also known as a 21K, 21.1K or 13.1 miles, although these values are rounded and not formally correct. A half marathon world record is officially recognised by the