Trondheim Halvmaraton

Trondheim Halvmaraton 2025 Course Analysis

Trondheim Halvmaraton is a full marathon held in Trondheim, Norway, scheduled for Saturday 6 September 2025. The course is run on road surface with 338m of total elevation gain, reaching a maximum altitude of 30m above sea level. For registration and full race details, visit the official Trondheim Halvmaraton website.

Elevation Profile

This is a hilly course with 338m of total elevation gain. The route climbs from 0m to as high as 30m above sea level — a substantial 30m elevation range. Runners should train on hills and plan for a more conservative pacing strategy, especially on the climbs.

Expected Race Day Weather

Based on historical weather data for September, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 9°C to 16°C. This temperature range is widely considered optimal for marathon performance, allowing efficient heat dissipation without cold-related issues. There is a low chance of rain (0%), so dry conditions are likely.

Surface Type: Road

Trondheim Halvmaraton 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 Trondheim Halvmaraton?

Our difficulty rating for Trondheim Halvmaraton 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 Trondheim Halvmaraton against other marathons to find the right race for your goals.