
Stavanger, Norway · Saturday 27 June 2026
The 3-Sjøersløpet half marathon in Norway offers a unique challenge with a route that takes runners around three scenic lakes in the Nordmarka region, north of Oslo. The course traverses through dense forests, alongside tranquil waters, and over well-maintained trails that weave through the untouched wilderness. With the occasional elevation change, the race offers a mild challenge for those looking to experience the serene beauty of Norway's natural landscape. Participants will pass by pictures
Adjusted Time
3:55:03
Time difference: -4.9 minutes compared to a flat, road, temperate course.
3-Sjøersløpet is a full marathon held in Stavanger, Norway, scheduled for Saturday 27 June 2026. The course is run on road surface with 148m of total elevation gain, reaching a maximum altitude of 47m above sea level. For registration and full race details, visit the official 3-Sjøersløpet website.
With 148m of elevation gain, this is a moderately undulating course. The route ranges from 7m to 47m above sea level (40m total range). While not completely flat, the elevation changes are manageable for most runners and shouldn't significantly impact pacing strategy.
Based on historical weather data for June, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 11°C to 12°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 (8%), so dry conditions are likely.
3-Sjøersløpet 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.
Our difficulty rating for 3-Sjøersløpet 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 3-Sjøersløpet against other marathons to find the right race for your goals.
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