De Maasdijk

De Maasdijk 2025 Course Analysis

De Maasdijk is a full marathon held in Oss, Netherlands, scheduled for Sunday 22 June 2025. The course is run on road surface with 37m of total elevation gain, reaching a maximum altitude of 11m above sea level. For registration and full race details, visit the official De Maasdijk website.

Elevation Profile

This is a very flat course with only 37m of total elevation gain across the full distance. The course ranges from 3m to 11m above sea level — a 8m 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 June, the expected race day conditions are as follows. Hot conditions are expected, with temperatures between 22°C and 30°C. Heat is one of the biggest performance factors in marathon running — research shows that for every degree above 15°C, marathon times slow by approximately 1-2%. Extra hydration and a conservative start are strongly recommended. There is a moderate chance of rain (41%). Runners may want to prepare for wet conditions but shouldn't expect persistent rainfall.

Surface Type: Road

De Maasdijk 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 De Maasdijk?

Our difficulty rating for De Maasdijk 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 De Maasdijk against other marathons to find the right race for your goals.