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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.
Weather
Typical climate for the race month — an estimate, not a forecast or a race-day record
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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Phnom Penh
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Registration
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Fun Facts
- ▸ The 4th Phnom Penh International Half Marathon in 2014 drew more than 4,000 people from 26 countries.
- ▸ Since the first race the organisers have worked with the Kantha Bopha Children's Hospitals, and registration fees and sponsorship go to them and other social causes.
- ▸ The start and finish were moved away from the Royal Palace to the park by Wat Botum in 2025 because other national ceremonies were scheduled at the palace.
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