Jungfrau-Marathon

Jungfrau-Marathon 2023 Course Analysis

Jungfrau-Marathon is a full marathon held in Interlaken, Switzerland, scheduled for Sunday 24 September 2023. The course is run on trail surface with 1936m of total elevation gain, reaching a maximum altitude of 2319m above sea level. For registration and full race details, visit the official Jungfrau-Marathon website.

Elevation Profile

This is a very challenging course with 1936m of total elevation gain — significantly more than the average trail marathon. The route ranges from 563m to 2319m above sea level (1756m range). Hill training is essential, and runners should expect a significantly slower time compared to a flat course.

Surface Type: Trail

Jungfrau-Marathon is a trail race, meaning the course includes unpaved surfaces such as dirt, gravel, or forest paths. Trail surfaces are inherently slower than road courses due to uneven footing, technical sections, and often steeper gradients. Trail-specific shoes with good grip are recommended, and runners should expect a finish time 10-20% slower than their equivalent road marathon time.

How Difficult Is Jungfrau-Marathon?

Our difficulty rating for Jungfrau-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 Jungfrau-Marathon against other marathons to find the right race for your goals.