Big Sur International Marathon

Big Sur International Marathon 2026 Course Analysis

Big Sur International Marathon is a full marathon held in Carmel, United States of America, scheduled for Sunday 26 April 2026. The course is run on road surface with 504m of total elevation gain, reaching a maximum altitude of 176m above sea level. For registration and full race details, visit the official Big Sur International Marathon website.

Elevation Profile

This is a hilly course with 504m of total elevation gain. The route climbs from 2m to as high as 176m above sea level — a substantial 174m elevation range. Runners should train on hills and plan for a more conservative pacing strategy, especially on the climbs.

Expected Race Day Weather

Based on historical weather data for April, the expected race day conditions are as follows. Moderate temperatures between 10°C and 21°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance over the full distance. There is a low chance of rain (0%), so dry conditions are likely.

Surface Type: Road

Big Sur International 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 Big Sur International Marathon?

Our difficulty rating for Big Sur International 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 Big Sur International Marathon against other marathons to find the right race for your goals.