Kiawah Island Marathon

Kiawah Island Marathon 2026 Course Analysis

Kiawah Island Marathon is a full marathon held in Kiawah Island, United States of America, scheduled for Friday 11 December 2026. The course is run on trail surface with 30m of total elevation gain, reaching a maximum altitude of 6m above sea level. For registration and full race details, visit the official Kiawah Island Marathon website.

Elevation Profile

This is a very flat course with only 30m of total elevation gain across the full distance. The course ranges from 2m to 6m above sea level — a 4m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.

Expected Race Day Weather

Based on historical weather data for December, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 8°C to 20°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a low chance of rain (2%), so dry conditions are likely.

Surface Type: Trail

Kiawah Island Marathon is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are inherently slower than road courses due to uneven footing, technical sections, and often steeper gradients. Trail-specific shoes with good grip are recommended, and runners should expect a finish time 10-20% slower than their equivalent road marathon time.

How Difficult Is Kiawah Island Marathon?

Our difficulty rating for Kiawah Island 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 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 Kiawah Island Marathon against other marathons to find the right race for your goals.