Course & Elevation
The Phnom Penh International Half Marathon is a half marathon held on a Sunday in mid-June in the Cambodian capital, with a 10K, a 5K and a 2.5K family fun run on the same morning. The 2026 edition, the 14th, started and finished at the park in front of Wat Botum, near the Royal Palace. Its 21 km route followed the riverside past the Royal Palace and other city landmarks, went through Koh Pich (Diamond Island) and Koh Norea, and looped back to the start; the redesigned route no longer crossed the Chroy Changvar Bridge. The race celebrates the birthday of Queen Mother Norodom Monineath Sihanouk, coincides with World Environment Day and Olympic Day, and raises funds for the Kantha Bopha Children's Hospitals. Every finisher receives a medal.
Course Facts
Weather
Typical climate for the race month — an estimate, not a forecast or a race-day record
29°C
Temperature
78%
Humidity
57%
Rain Chance
June in Phnom Penh is hot and humid: highs average about 34°C and lows about 25°C, with some rain on around seventeen days of the month.
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