SUÈDE · Södermanland County
Sörmlands Trail Run 100km: Sweden's Flattest Big Trail Ultra
Informations clés
Distance
100 km
Date
Droit d’inscription
1,650 SEK
€ / km
€1.57
Sweden’s autumn 100K - Roots, rocks, lakes, and relentless rolling single-track near Stockholm.
Sörmlands Trail Run 100 km is a point-to-point ultra at the Sörmlands 100 Trail Run event in Södermanland County, Sweden — first introduced in 2022 and now in its fifth edition. The course runs from Öster Malma, a historic castle estate, through Sörmland's forest and farmland to the coastal village of Nävekvarn, climbing 1,300m D+ (13m per kilometre) — ranking 365th of 390 European trail races for vertical density and among the 26 least demanding ultras by D+/km in the database. Percent-flat ranks 364th of 390, with 58% of the course on level terrain; terrain is 65% trail, 25% gravel, and 10% asphalt across 120+ private landholdings in five municipalities. Aid stations are located at well-regarded local restaurants and food producers, reflecting race director Billy White's background as a chef. Finisher package includes a hand-made wooden medal, sauna access, and hot food. The 100 km starts 12 September as part of the wider festival running 11–13 September 2026. Entry costs 1,650–2,050 SEK in tiered pricing (approximately €1.57 per kilometre). Stockholm Skavsta Airport (NYO) is approximately 13 minutes from Nyköping. 86 finishers in 2025.
Élévation et Terrain
Mètres totaux
1,300m
D+/KM
13.0m/km
Pour référence, le Tor des Géants 330 km a 73 D+/km.
Pente montante moyenne
5.3%
Pente descendante moyenne
-5.3%
Distribution du gradient de montée
| 2–5% | 13.1 km | |
|---|---|---|
| 5–10% | 6.7 km | |
| 10–15% | 1.6 km | |
| 15–20% | 0.4 km | |
| 20%+ | 0.2 km |
Profil de parcours
AnalysedDétail du terrain
| 20.6% | Montée |
|---|---|
| 58% | Plat |
| 21.4% | Descente |
Terrain
Ascensions
Principales montées
| Rank | Length | Elevation gain | Start km | Average gradient | Max gradient |
|---|---|---|---|---|---|
| 1 | 0.8 km · 43 m gain starts km 61 · avg 5.8% · max 13.2% | ||||
| 2 | 2.1 km · 42 m gain starts km 39 · avg 2.1% · max 11.9% | ||||
| 3 | 1.6 km · 40 m gain starts km 1 · avg 2.6% · max 10.9% |
Principales descentes
| Rank | Length | Elevation drop | Start km | Average gradient | Max gradient |
|---|---|---|---|---|---|
| 1 | 2.4 km · 59 m drop starts km 101 · avg -2.4% · max -12.7% | ||||
| 2 | 3.1 km · 54 m drop starts km 32 · avg -1.7% · max -22.3% | ||||
| 3 | 1.4 km · 37 m drop starts km 6 · avg -3% · max -9.8% |
Sörmlands Trail Run 100km: Sweden's Flattest Big Trail Ultra
The Sörmlands Trail Run 100km is a point-to-point trail race held each September in Södermanland County, Sweden, running from Öster Malma castle to the coastal village of Nävekvarn. The course covers 100km with 1,300m of total elevation gain — just 13m per kilometre — making it one of the fifteen least elevation-dense distances in DTR's database of nearly 390 courses. Entry for the 2026 edition is 1,850 SEK (approximately €1.57 per kilometre at early-bird pricing).
The course runs 65% trail, 25% gravel, and 10% asphalt through Sörmland's rolling forest, farmland, and lakeside trails. With 58% of the course classified as flat terrain and an average uphill gradient of just 5.33%, this is one of the most runnable 100km trail ultras in Europe by the numbers. The defining feature is the aid stations: placed at some of the region's best local restaurants and food producers, a direct result of race director Billy White's background as a chef and author. Stockholm Skavsta Airport (NYO) is 13 minutes from the Nyköping race base.
The race suits road runners making their trail ultra debut, fast-hikers targeting a runnable distance, and anyone who wants a genuine point-to-point Swedish forest adventure without technical mountain terrain.
How Flat is the Sörmlands Trail Run 100km Course?▼
Q: How difficult is the Sörmlands Trail Run 100km? A: It is exceptionally flat by ultra trail standards. Total elevation gain is 1,300m over 100km, just 13m per kilometre. Of the 389 distances in DTR's database with GPX data, only approximately 12 are less elevation-dense. Average uphill gradient is 5.33% and 58% of the course is flat terrain. The biggest single climb gains just 43m. Runners comfortable with road marathons or flat hiking can handle the gradient demands of this course.
How Much Does the Sörmlands Trail Run cost? (Entry fee and value per km)▼
Q: How much does the Sörmlands Trail Run 100km cost? A: Entry for the 2026 edition is tiered: 1,650 SEK (November 2025–February 2026), 1,850 SEK (March–May 2026), and 2,050 SEK (June–September 2026). At mid-tier pricing that's approximately €165–175 depending on exchange rate, or roughly €1.57 per kilometre based on early-bird pricing.
Nearest Airports and Travel Options for Sormlands Trail Run 100KM▼
Q: How do you get to the Sörmlands Trail Run? A: The race starts at Öster Malma castle near Nyköping. Stockholm Skavsta Airport (NYO) is just 13 minutes by car, it is one of the most accessible race starts in Scandinavian trail running. Wizzair flies into NYO from Warsaw, Bucharest, and Belgrade; Norwegian flies seasonally from Spain. Stockholm Arlanda (ARN) is also an option, with train and bus connections to Nyköping taking approximately 2 hours. Nyköping also offers multiple options to choose from when it comes accommodations.
What to expect from the Sörmlands Trail Run 100km Course and Terrain.▼
Q: What is the Sörmlands Trail Run route like? A: A point-to-point course from Öster Malma castle through Sörmland's forest, farmland, and lakeside trails to the coastal village of Nävekvarn. Terrain is 65% trail, 25% gravel, and 10% asphalt. The route crosses five municipalities and over 120 private landholdings. Aid stations are placed at some of the region's most notable local restaurants and food producers.
Fichiers de course
Logistique
Aéroport le plus proche
Stockholm Skavsta (NYO) / Stockholm Arlanda (ARN)
Notes
Start: Only 15 minutes by car or bus from NYO to Nyköping. Wizzair flies from Warsaw, Bucharest, Belgrade into NYO, Norwegian flies seasonally from Spain / Public transport: train/bus/car from ARN to Nyköping/Trosa region takes about two hours / Accommodation: Nyköping is the best base with plentiful lodging, and is a stop on the shuttle bus to race starts, as well as the start of the 50km race. Airbnbs available at race finish and other towns nearby (car recommended)
