New Hampshire Half Marathon

New Hampshire Half Marathon 2025 Course Analysis

New Hampshire Half Marathon is a half marathon held in Bristol, United States of America, scheduled for Saturday 4 October 2025. The course is run on road surface with 97m of total elevation gain, reaching a maximum altitude of 239m above sea level. For registration and full race details, visit the official New Hampshire Half Marathon website.

Elevation Profile

This is a very flat course with only 97m of total elevation gain across the full distance. The course ranges from 142m to 239m above sea level — a 97m 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 October, the expected race day conditions are as follows. Moderate temperatures between 12°C and 27°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 (1%), so dry conditions are likely.

Surface Type: Road

New Hampshire 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 New Hampshire Half Marathon?

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