
Beinwil am See, Switzerland · Saturday 11 October 2025
The Hallwilerseelauf Halbmarathon takes place in the stunning region surrounding Lake Hallwil in Switzerland. This picturesque race offers participants a chance to run along the lakefront, with panoramic views of the Alps and the serene Swiss countryside. The course is mostly flat, offering a smooth and enjoyable run, although the occasional gentle incline adds a slight challenge. Runners pass through charming villages and wooded areas, making it a scenic and peaceful event.\n\nAfter finishing t
Adjusted Time
3:55:27
Time difference: -4.6 minutes compared to a flat, road, temperate course.
Hallwilerseelauf Halbmarathon is a full marathon held in Beinwil am See, Switzerland, scheduled for Saturday 11 October 2025. The course is run on road surface with 121m of total elevation gain, reaching a maximum altitude of 528m above sea level. For registration and full race details, visit the official Hallwilerseelauf Halbmarathon website.
With 121m of elevation gain, this is a moderately undulating course. The route ranges from 445m to 528m above sea level (83m 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 October, the expected race day conditions are as follows. Near-ideal running temperatures are expected, ranging from 9°C to 14°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.
Hallwilerseelauf Halbmarathon 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 Hallwilerseelauf Halbmarathon 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 Hallwilerseelauf Halbmarathon against other marathons to find the right race for your goals.
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