Mansfield which competes as Nova Centurion. The Sherwood Swimming Baths adjacent to the former Sherwood Colliery was refurbished and opened in January 2010 as the "Rebecca Adlington Swimming Centre". The 25-metre pool was widened at the expense of losing the tiered public seating and has a new, small, endless stroke-improvement training pool with variable-resistance water flow. The complex uses a ground-source heat pump backed by a biomass boiler burning wood pellets prepared from waste by a local wood yard, to reduce its carbon footprint. At the Beijing 2008 Olympic Games, a Mansfield contestant, Rebecca Adlington, won two gold medals, for 400
Marathons at the Olympics are 2:06:32 hours for men, set by Samuel Wanjiru in 2008, and 2:23:07 hours for women, set by Tiki Gelana in 2012. The men's marathon world record has been improved several times at the Olympics: in 1908, 1920, and then at successive Olympics by Abebe Bikila in 1960 and 1964. Abebe Bikila and Waldemar Cierpinski are the only athletes to have won two Olympic gold medals in the marathon. No athlete has won more than two medals of any colour. Ethiopia has won the most gold medals in the event, with six, while the United States has the greatest medal