Dorney Lake Half Marathon - November

Dorney Lake Half Marathon - November 2025 Course Analysis

Dorney Lake Half Marathon - November is a half marathon held in Windsor, United Kingdom, scheduled for Sunday 9 November 2025. The course is run on road surface with 38m of total elevation gain, reaching a maximum altitude of 24m above sea level. For registration and full race details, visit the official Dorney Lake Half Marathon - November website.

Elevation Profile

This is a very flat course with only 38m of total elevation gain across the full distance. The course ranges from 18m to 24m above sea level — a 6m 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 November, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 7°C to 14°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a high chance of rain (63%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.

Surface Type: Road

Dorney Lake Half Marathon - November 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 Dorney Lake Half Marathon - November?

Our difficulty rating for Dorney Lake Half Marathon - November 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 Dorney Lake Half Marathon - November against other half marathons to find the right race for your goals.