Kauai Half Marathon

Kauai Half Marathon 2026 Course Analysis

Kauai Half Marathon is a half marathon held in Poipu, United States of America, scheduled for Sunday 6 September 2026. The course is run on road surface with 228m of total elevation gain, reaching a maximum altitude of 212m above sea level. For registration and full race details, visit the official Kauai Half Marathon website.

Elevation Profile

With 228m of elevation gain, this is a moderately undulating course. The route ranges from 6m to 212m above sea level (206m total range). While not completely flat, the elevation changes are manageable for most runners and shouldn't significantly impact pacing strategy.

Expected Race Day Weather

Based on historical weather data for September, the expected race day conditions are as follows. Hot conditions are expected, with temperatures between 24°C and 29°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 low chance of rain (0%), so dry conditions are likely.

Surface Type: Road

Kauai 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.

How Difficult Is Kauai Half Marathon?

Our difficulty rating for Kauai 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 Kauai Half Marathon against other half marathons to find the right race for your goals.