Singapore, Singapore · Saturday 6 December 2025
The Singapore Half Marathon takes runners on an urban adventure through the ultra-modern city-state of Singapore. The course weaves through iconic landmarks like Marina Bay Sands, Gardens by the Bay, and the Singapore Flyer, offering participants a scenic run through one of the world’s most visually striking cities. The race attracts a diverse group of runners, from elite athletes to casual joggers, all eager to experience the unique fusion of nature, cutting-edge architecture, and vibrant cultu
Adjusted Time
1:50:59
Time difference: +6.0 minutes compared to a flat, road, temperate course.
Singapore Half Marathon is a half marathon held in Singapore, Singapore, scheduled for Saturday 6 December 2025. The course is run on road surface with 59m of total elevation gain, reaching a maximum altitude of 21m above sea level. For registration and full race details, visit the official Singapore Half Marathon website.
This is a very flat course with only 59m of total elevation gain across the full distance. The course ranges from 2m to 21m above sea level — a 19m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.
Based on historical weather data for December, the expected race day conditions are as follows. Hot conditions are expected, with temperatures between 25°C and 30°C. Heat is one of the biggest performance factors in marathon running — research shows that for every degree above 15°C, marathon times slow by approximately 1-2%. Extra hydration and a conservative start are strongly recommended. There is a high chance of rain (83%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.
Singapore Half Marathon is run on road surfaces, which provide the fastest and most predictable conditions for marathon running. Road courses allow for consistent pacing and are typically the best choice for runners targeting a personal best time.
Our difficulty rating for Singapore Half Marathon is calculated using a model that combines elevation gain, temperature impact, and surface type. Use the difficulty calculator above to enter your target finish time and see exactly how many minutes this course would add or subtract compared to a perfectly flat, cool, road-based half marathon. Faster runners and slower runners are affected differently by the same course conditions, so the difficulty is personalised to your pace.
Looking for an easier marathon or a tougher challenge? You can also compare Singapore Half Marathon against other half marathons to find the right race for your goals.