Jungfrau-Marathon
Interlaken, Switzerland · Friday 24 September 2027
The Jungfrau-Marathon is a serious mountain trail race in Switzerland that demands respect for its terrain and elevation. You'll run 42.2 kilometers on trail with nearly 2000 meters of climbing, starting at 563 meters above sea level and topping out at 2319 meters, which means the course is relentlessly hilly throughout. This September event in the Interlaken region expects runners to have legitimate hill running fitness and trail experience since you're dealing with genuine alpine terrain, not rolling countryside. The race takes place entirely on trail surface, so expect loose footing, technical sections, and conditions that change with weather and seasonal ground cover. If you're looking for a fast marathon, this isn't it. If you want to test yourself against serious elevation and a beautiful but unforgiving alpine course, the Jungfrau-Marathon is worth training hard for.
Difficulty Calculator
h
:m
:s
Adjusted Time
5:35:41
Time difference: +95.7 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain1936m
Elevation High2319m
Elevation Low563m
Weather Forecast
High23°C
Low11°C
Chance of Rain0%
How hard is Jungfrau-Marathon?
Very Difficultharder than 98% of marathons
Flattest / easiestHardest
On our difficulty model, Jungfrau-Marathon plays about 76 minutes slower than an average road marathon for a 3:30 runner. It ranks #25 hardest of 1151 marathons we analyse, and #3 of 13 in Switzerland. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Jungfrau-Marathon?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Jungfrau-Marathon | Difference |
|---|---|---|
| 3:00:00 | 3:49:38 | +49:38 |
| 3:30:00 | 4:41:24 | +1:11:24 |
| 4:00:00 | 5:35:41 | +1:35:41 |
| 4:30:00 | 6:32:15 | +2:02:15 |
| 5:00:00 | 7:30:59 | +2:30:59 |
| 5:30:00 | 8:31:44 | +3:01:44 |
| 6:00:00 | 9:34:24 | +3:34:24 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Jungfrau-Marathon 2027 Course Analysis
Jungfrau-Marathon is a full marathon held in Interlaken, Switzerland. It is scheduled for Friday 24 September 2027. The course is run on road surface with 1936m of total climbing, with its high point near 2319m above sea level. For registration and full race details, visit the official Jungfrau-Marathon website.
Elevation Profile
This is a very challenging course with 1936m of total climbing - well above the average road marathon - topping out around 2319m above sea level. Hill training is essential, and you should expect a slower finish time than on a flat course.
Expected Race Day Weather
Based on historical weather data for September, the expected race day conditions are as follows. Moderate temperatures between 11°C and 23°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance on race day. There is a low chance of rain (0%), so dry conditions are likely.
Surface Type: Road
Jungfrau-Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare Jungfrau-Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Jungfrau-Marathon fits your goal, these courses play out about the same on our difficulty model.
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