Course & Elevation
The adidas Half Marathon is the half-marathon race of the Singapore International Marathon weekend, held in early December. Until 2025 the weekend was the Standard Chartered Singapore Marathon; in 2026 it became the BYD Singapore International Marathon presented by adidas, run by a new organiser, SG International Marathon Pte. Ltd. The half marathon starts at 4:30 on the Saturday morning at the F1 Pit Building and finishes at the National Stadium in Kallang, so it runs point to point. The cut-off is 3 hours 45 minutes. Entries for the 2026 half marathon were sold out. The full marathon starts at the same place and time on the Sunday and finishes in the same stadium; it is the 44th edition of the race, which began in 1982. The 10K and 5K are run on the Friday evening of the same weekend.
Course Facts
Weather
Typical climate for the race month — an estimate, not a forecast or a race-day record
27°C
Temperature
86%
Humidity
61%
Rain Chance
December in Singapore is hot, humid and wet: highs average about 30°C and lows about 24°C, with relative humidity near 85% and rain on most days, which is why the start is at 4:30 in the morning.
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