Marathon

Ulaanbaatar Marathon

Улаанбаатар марафон

Ulaanbaatar, Mongolia May 42.195 km
14/100 Easy

Difficulty

Marathon Index Score

2026 edition held May 23, 2026

Next edition expected

Usually May

2027 date not yet confirmed

Weather: Ulaanbaatar Marathon

Typical climate in May (an estimate, not measured race-day data). Use it to plan your race strategy, clothing, and hydration.

Racing conditions: Cool

Typical climate for the race month — an estimate, not a forecast or a race-day record

10°C

Temperature

Range: 4°C – 18°C

43%

Humidity

Low — comfortable

12%

Rain Chance

Low chance of rain

May

Typical race month

Usually on a Saturday

Conditions

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.

What to Wear

Light gloves

Useful at the start, tuck away later

Long sleeve or arm warmers

Versatile for cool starts

Hydration Strategy

Before the Race

Normal hydration. Drink to thirst in the 24 hours before. Avoid over-hydrating.

During the Race

Drink at aid stations every 3-4km. Alternate water and sports drink.

After the Race

Rehydrate within 30 minutes of finishing. A drink with electrolytes and some protein helps recovery.

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