Southernmost Half Marathon and 10K

Southernmost Half Marathon and 10K 2026 Course Analysis

Southernmost Half Marathon and 10K is a half marathon held in Key West, United States of America, scheduled for Sunday 11 October 2026. The course is run on road surface with 0m of total elevation gain, reaching a maximum altitude of 0m above sea level. For registration and full race details, visit the official Southernmost Half Marathon and 10K website.

Elevation Profile

This is a very flat course with only 0m of total elevation gain across the full distance. The course ranges from 0m to 0m above sea level — a 0m elevation range that makes it one of the flatter races available. Runners targeting a personal best will appreciate the minimal climbing.

Surface Type: Road

Southernmost Half Marathon and 10K 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 Southernmost Half Marathon and 10K?

Our difficulty rating for Southernmost Half Marathon and 10K 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 Southernmost Half Marathon and 10K against other half marathons to find the right race for your goals.