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The Ulaanbaatar Marathon is an international road race in Mongolia's capital, held on a Saturday in late May that is also the city's Car-Free Day, with events centred on Sukhbaatar Square. The Ulaanbaatar City Governor's Office organises it together with the Mongolian Athletics Federation. The first official international edition was held in 2014, and the 2026 edition on 23 May was the 11th. The 2026 race offered five categories: the 42 km marathon for runners aged 18 and over, the 21 km half marathon for ages 18 to 34 and over 55, a 10 km sports run, a 5 km health run, and 800 m and 1,500 m family runs. The marathon started at 07:00 and the 21 km and 10 km races at 08:30, and central roads were closed from 06:00 to 19:00. A record 46,306 people registered in 2026 from 41 countries, though the full marathon had a field of just over 700. The 21 km and 42 km courses carry World Athletics 'B' category certificates. Kenya's Seroi Anderson Saitoti won the 2026 men's marathon, and Mongolia's B. Munkhzaya won the women's race.
Typical climate for the race month — an estimate, not a forecast or a race-day record
Late May in Ulaanbaatar is cool and dry: highs average about 18°C, lows about 4°C, and rain of 1 mm or more falls on fewer than four days of the month.
The Race
Ulaanbaatar
The Ulaanbaatar City Governor's Office started the first official international marathon in the capital in 2014, with 16,839 participants from 12 countries. Over the years the field grew, and in 2026 a record 46,306 people from 41 countries registered for the eleventh edition.
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