NORVÈGE · Oslo
Oslo Trail Challenge 200km: Norway's Smallest Big Ultra
Informations clés
Distance
200 km
Date
Droit d’inscription
1,600 NOK
€ / km
€0.71
200K city-edge epic: forests, lakes, and endless night miles close to Oslo’s urban comforts.
The Oslo Trail Challenge is a 200km self-navigated ultramarathon through the forests of Nordmarka, Lillomarka, and Romeriksåsen north of Oslo, Norway. Organized by the non-commercial Langt og Lenge, the 2026 edition starts at Veståsen skole, Gjerdrum on September 27 at 10:00. The format is there-and-back: 100km outbound to Myllsdammen (Mylla dam) in Lunner, then 100km return on the same route. All trails are unmarked -- runners navigate by GPS track only. One helper and one drop bag are permitted at the Mylla dam turnaround; no outside assistance elsewhere on the course. The course gains 7,962m D+ over 200km (39.8 m/km) -- high elevation density for forest terrain. With 21.7% flat terrain and an 8.78% distance-weighted average uphill gradient, the course is less runnable than its forest setting suggests. Every gradient is encountered twice: outbound climbs return as descents, outbound descents return as climbs. Approximately 5 runners finished the 200km in 2024. Entry is 1,600 NOK (~€142 / €0.71/km). Oslo Gardermoen Airport (OSL) is 24 minutes from the start. Registration closes September 1, 2026.
Élévation et Terrain
Mètres totaux
7,962m
D+/KM
39.8m/km
Pour référence, le Tor des Géants 330 km a 73 D+/km.
Pente montante moyenne
8.8%
Pente descendante moyenne
-9%
Distribution du gradient de montée
| 2–5% | 13.3 km | |
|---|---|---|
| 5–10% | 15.3 km | |
| 10–15% | 7.4 km | |
| 15–20% | 3.4 km | |
| 20%+ | 2.4 km |
Profil de parcours
AnalysedDétail du terrain
| 41.3% | Montée |
|---|---|
| 21.7% | Plat |
| 37% | Descente |
Terrain
Ascensions
Principales montées
| Rank | Length | Elevation gain | Start km | Average gradient | Max gradient |
|---|---|---|---|---|---|
| 1 | 7.6 km · 310 m gain starts km 13 · avg 4.1% · max 16.9% | ||||
| 2 | 4.9 km · 258 m gain starts km 33 · avg 5.3% · max 33.2% | ||||
| 3 | 5.8 km · 230 m gain starts km 62 · avg 4% · max 43.1% |
Principales descentes
| Rank | Length | Elevation drop | Start km | Average gradient | Max gradient |
|---|---|---|---|---|---|
| 1 | 4.3 km · 242 m drop starts km 8 · avg -5.6% · max -22.3% | ||||
| 2 | 5.4 km · 193 m drop starts km 66 · avg -3.6% · max -25.3% | ||||
| 3 | 3.7 km · 178 m drop starts km 92 · avg -5% · max -32.4% |
Oslo Trail Challenge 200km: Norway's Smallest Big Ultra
There and Back Through Oslo Forest -- 200km, Self-Navigated, No Markings▼
Q: What is the Oslo Trail Challenge 200km? A: The Oslo Trail Challenge is a 200km self-navigated ultramarathon through the forests of Nordmarka, Lillomarka, and Romeriksåsen north of Oslo, Norway, organized by the community-driven, non-commercial Langt og Lenge. First held in 2019, the 2026 edition starts at Veståsen skole, Gjerdrum on Saturday September 27 at 10:00. The format is there-and-back: 100km outbound to Myllsdammen (Mylla dam) in Lunner, then 100km return on the same route. All trails are unmarked -- runners navigate independently by GPS track. The course gains 7,962m D+ over 200km (39.8 m/km). Approximately 5 runners finished the 200km in 2024, making this one of the smallest events in the DTR database. No ITRA certification has been confirmed for the 200km distance.
7,962m D+ at 39.8 m/km -- Oslo Forest Is Steeper Than It Looks▼
Q: How hard is the Oslo Trail Challenge 200km? A: Extremely demanding. The course gains 7,962m D+ (39.8 m/km, rank 278/~390 in the DTR database) with an 8.78% distance-weighted average uphill gradient (rank 302/~390) and -9.03% average downhill (rank 99/~390 inverted -- gentler quarter). With 21.7% flat terrain and 41.3% uphill composition, the course is less runnable than its urban-forest setting suggests. The there-and-back format doubles every gradient feature: outbound climbs become return descents and vice versa. No outside assistance is permitted except one helper and one drop bag at the Mylla dam turnaround. All navigation is by GPS track only. Late September conditions in Oslo add cold-weather demands: overnight lows 5-7°C, approximately 33% daily rain chance.
1,600 NOK and a GPS Track -- One of Europe's Most Accessible 200km Starts▼
Q: Is the Oslo Trail Challenge ITRA-certified or a UTMB qualifier? A: ITRA certification for the 200km distance has not been confirmed in the DTR database. An ITRA listing exists for 'Oslo Trail Challenge -- Short' which may refer to one of the shorter sibling distances (100km, 55km, or 21km). Runners seeking ITRA points should verify directly at itra.run before entering. The race is not listed as a UTMB Index event. Contact the organizer (langtoglenge.org) for the current qualification status of the 200km.
Who Should Run the Oslo Trail Challenge?▼
Q: When is the Oslo Trail Challenge and how much does it cost? A: The 2026 edition of the 200km starts at 10:00 on Saturday September 27 at Veståsen skole, Gjerdrum; the race weekend runs September 25-27. Entry costs 1,600 NOK (approximately €142 total / €0.71/km). Registration opened April 1, 2026 and closes September 1, 2026 at raceresult.com. The race is not sold out. Sibling distances are offered at 100km, 55km, and 21km. No finisher data from 2025 is available in the DTR database; only approximately 5 runners finished the 200km in 2024. The organizer, Langt og Lenge, is community-driven and non-commercial.
Fichiers de course
Logistique
Aéroport le plus proche
Oslo (OSL)
Notes
Start: ~30–45 min / Public transport: Very good / Accommodation: Easy (Oslo)
