Aalborg Brutal Marathon

Aalborg Brutal Marathon 2025 Course Analysis

Aalborg Brutal Marathon is a full marathon held in Aalborg, Denmark, scheduled for Friday 18 April 2025. The course is run on mixed surface with 620m of total elevation gain, reaching a maximum altitude of 57m above sea level. For registration and full race details, visit the official Aalborg Brutal Marathon website.

Elevation Profile

This is a very challenging course with 620m of total elevation gain — significantly more than the average road marathon. The route ranges from 4m to 57m above sea level (53m 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 April, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 8°C to 11°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 (94%). Runners should prepare for wet conditions, including appropriate footwear and clothing choices.

Surface Type: Mixed

Aalborg Brutal Marathon features a mixed-surface course, combining sections of road with unpaved terrain such as gravel paths, parkland, or boardwalks. Mixed courses add variety but also introduce some unpredictability in footing. Runners should expect slightly slower times compared to a pure road marathon, and road-trail hybrid shoes may be the best footwear option.

How Difficult Is Aalborg Brutal Marathon?

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