SUISSE · Canton Grisons (Val Surses / Parc Ela)
Swiss Irontrail 55km: Savognin to Bivio Through Parc Ela, 4,199m D+ via Pass Lunghin and Septimerpass
Informations clés
Distance
55 km
Date
Droit d’inscription
110 CHF
€ / km
€2.18
Nouvelle date en attente
Cette course a déjà eu lieu. La date de la prochaine édition est en attente.
Graubünden mountain odyssey: long ridges, huge vert, and a quietly brutal alpine challenge.
The Swiss Irontrail 55km (T55) is an alpine point-to-point race held annually in the Val Surses of Canton Graubünden, Switzerland. Starting in Savognin and finishing in Bivio, the route crosses Parc Ela — Switzerland's largest nature park — via the Fuorcla digl Leget, Pass Lunghin, and the ancient Septimerpass. Terrain ranges from alpine meadows and mountain lakes to scree fields and sustained ridgeline running above the treeline. Pass Lunghin is one of Europe's most remarkable hydrological divides: the only point in the Alps from which water drains simultaneously to the Rhine (North Sea), the Danube (Black Sea), and the Po (Adriatic). With 4,199m D+ over 55km (approximately 76.3m per km), the T55 ranks 30th of 390 European ultras for vertical density. Percent-flat terrain ranks 35th of 390: among the least-flat 9% of all European ultras in the database. The Swiss Irontrail series was first established in 2012; the current Savognin-Bivio format runs annually since 2023. Time limit: 16 hours. Entry in CHF via Datasport; an additional administration fee may apply. Nearest airport: Zürich ZRH, approximately 2.5 to 3.5 hours from Savognin; a car is recommended.
Élévation et Terrain
Mètres totaux
4,199m
D+/KM
76.3m/km
Pour référence, le Tor des Géants 330 km a 73 D+/km.
Pente montante moyenne
14.8%
Pente descendante moyenne
-15.1%
Distribution du gradient de montée
| 2–5% | 3.8 km | |
|---|---|---|
| 5–10% | 6.1 km | |
| 10–15% | 5.4 km | |
| 15–20% | 4.5 km | |
| 20%+ | 6.9 km |
Profil de parcours
AnalysedDétail du terrain
| 48.4% | Montée |
|---|---|
| 11.1% | Plat |
| 40.5% | Descente |
Terrain
Ascensions
Principales montées
| Rank | Length | Elevation gain | Start km | Average gradient | Max gradient |
|---|---|---|---|---|---|
| 1 | 8.5 km · 757 m gain starts km 5 · avg 9% · max 53.9% | ||||
| 2 | 5.7 km · 743 m gain starts km 20 · avg 13% · max 53.8% | ||||
| 3 | 4.4 km · 515 m gain starts km 0 · avg 11.7% · max 37.1% |
Principales descentes
| Rank | Length | Elevation drop | Start km | Average gradient | Max gradient |
|---|---|---|---|---|---|
| 1 | 6.9 km · 1006 m drop starts km 48 · avg -14.6% · max -43.1% | ||||
| 2 | 3.7 km · 495 m drop starts km 26 · avg -13.3% · max -32.8% | ||||
| 3 | 2.4 km · 480 m drop starts km 17 · avg -20% · max -39.7% |
Swiss Irontrail 55km: Savognin to Bivio Through Parc Ela, 4,199m D+ via Pass Lunghin and Septimerpass
What Makes the Swiss Irontrail 55km Stand Out▼
Q: How far is the Swiss Irontrail 55km and what is the elevation gain? A: The Swiss Irontrail T55 covers 55km officially (55.05km by GPX analysis) with 4,199m D+ confirmed by both official figures and GPX measurement. Official D- is approximately 3,610m; GPX records show 3,933m (discrepancy flagged in DTR records). The finish in Bivio sits approximately 579m higher than the Savognin start, which accounts for the asymmetry between ascent and descent totals. D+/km of approximately 76.3m ranks 30th of 390 European ultras — top 8% most vertically demanding. Maximum race time is 16 hours from the Savognin start.
Course Profile: From Savognin Through Val d'Err, Pass Lunghin, Septimerpass, and into Bivio▼
Q: What is the route of the Swiss Irontrail T55? A: The T55 runs point-to-point from Savognin to Bivio in Canton Graubünden, Switzerland. The course climbs through Val d'Err to the Fuorcla digl Leget (the Himmelstor, or Heaven's Gate), then continues across the Alp Flix plateau to Pass Lunghin. From Pass Lunghin the route descends past Leg Grevasalvas before crossing the Septimerpass — one of the oldest documented Alpine passes, in use since the Bronze Age. The final section descends via Stallerberg to the finish in Bivio. The entire route runs through Parc Ela, Switzerland's largest nature park.
Terrain and Gradient: Where the Swiss Irontrail T55 Ranks Among 390 European Ultras▼
Q: What is the terrain like on the Swiss Irontrail 55km? A: The T55 combines high alpine meadows, scree fields, rocky singletrack, mountain lakes, and sustained ridgeline running above the treeline. Paths include gravel tracks, open mountain trails, and technical rocky sections through wide alpine valleys and high passes. The D+/km rank of 30/390 and Percent-Flat rank of 35/390 place this firmly in the top 10% most demanding alpine terrain profiles among European ultras. Runners should be confident on technical mountain terrain and comfortable with sustained high-altitude running throughout the full race distance.
Entry Fee, Registration, and What to Expect Logistics-Wise▼
Q: What is the entry fee for the Swiss Irontrail 55km and is it sold out? A: The T55 entry fee is priced in Swiss francs (CHF). The early-bird price for the 2026 edition was CHF 110 (valid until February 28, 2026), with the price increasing from March 1, 2026. An additional Datasport administration fee may apply on top of the entry fee. DTR records the approximate €/km equivalent at 2.18. Registration is managed via Datasport (onreg.datasport.com). The 2026 edition was not sold out. For 2027 pricing and registration dates — note the 2027 race moves to August 14–15 — check irontrail.ch directly.
Fichiers de course
Logistique
Aéroport le plus proche
Zürich (ZRH)
Notes
Start: ~2.5–3.5 hrs drive/train+bus to Savognin / Public transport: feasible but slow (train to Chur/Thusis + bus) / Accommodation: limited in Val Surses; book early
FAR
It’ll possibly take 3+ hours from the closest large airport to arrive. Plan your adventure accordingly, take an extra day for those after-race beers or Curranz.
