Most runners in a horse race

The most runners in a horse race is 4,249 and was achieved by the Federation of Mongolian Horse Racing Sport and Trainers (FMHRST) during an event organized by Mr M Enkhbold and Mr P Sergelen, president and secretary general of FMHRST, respectively, in Khui Doloon Khudag, Ulaanbaatar (Ulan Bator), Mongolia, on 10 August 2013. A total of 4,279 horses started the race and 30 were deducted from the final total as they did not finish the course. The race covered a distance of 18 km (11.18 miles). The first five horses crossed the finish line in the following times: 1st: 24 min 30.42 sec; 2nd: 24 min 30.46 sec; 3rd: 24 min 30.54 sec; 4th: 24 min 31.23 sec; 5th: 25 min 2.36 sec. The youngest rider was seven years old and oldest was 79 years old.