Aletsch Halbmarathon

Aletsch Halbmarathon 2026 Course Analysis

Aletsch Halbmarathon is a full marathon held in Bettmeralp, Switzerland, scheduled for Saturday 6 June 2026. The course is run on road surface with 1080m of total elevation gain, reaching a maximum altitude of 2640m above sea level. For registration and full race details, visit the official Aletsch Halbmarathon website.

Elevation Profile

This is a very challenging course with 1080m of total elevation gain — significantly more than the average road marathon. The route ranges from 1932m to 2640m above sea level (708m range). Hill training is essential, and runners should expect a significantly slower time compared to a flat course.

Expected Race Day Weather

Based on historical weather data for June, the expected race day conditions are as follows. Moderate temperatures between 13°C and 25°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 high chance of rain (55%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.

Surface Type: Road

Aletsch Halbmarathon 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 Aletsch Halbmarathon?

Our difficulty rating for Aletsch Halbmarathon 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 Aletsch Halbmarathon against other marathons to find the right race for your goals.