Germany · Saxony (Zittau Mountains Nature Park)
XTERRA O-SEE Ultra Trail
Distance
100.2 km
Date
October 16, 2026
Entry fee
130 EUR
€ / km
€1.30
Saxon Switzerland edge: technical trails, rocky scenery, and a tough 100K near the Czech border.
Elevation and Terrain
Total Meters
3451m
D+/KM
34.44m/km
For context, the Tor des Géants 330 loop has 73 D+/km.
Avg Uphill Gradient
12.0%
Avg Downhill Gradient
-11.9%
Uphill gradient distribution
Route Profile
Analysed 2026-05-02Terrain breakdown
Terrain
Climbs
Top climbs
6.1 km · 354 m gain
starts km 75 · avg 5.8% · max 54.9%
2.8 km · 258 m gain
starts km 66 · avg 9.2% · max 44.1%
4.1 km · 254 m gain
starts km 28 · avg 6.2% · max 43.6%
Top descents
6.0 km · 273 m drop
starts km 45 · avg -4.6% · max -29.5%
5.0 km · 269 m drop
starts km 69 · avg -5.3% · max -45.3%
3.2 km · 252 m drop
starts km 36 · avg -8.0% · max -46.8%
Why O-SEE 100k Is Harder Than Its Elevation Looks (12% Average Uphill, 20% Flat, Biggest Climb at km 75)
Q: How hard is the XTERRA O-SEE Ultra Trail 100km? A: Harder than the elevation figure suggests. The course covers 100.2 km with 3,451 m of gain (34.4 m/km), but the distance-weighted average uphill gradient of 12.04% — in the top ~10–14% of the DTR database — reflects a course that is almost constantly ascending or descending (only 20.3% flat). The biggest climb (354m at km 75) arrives after three-quarters of the race, with a 54.86% maximum gradient spike. Entry requires completion of a ≥75km trail race in the last five years.
XTERRA European Championship in Saxony: What That Means for the 2026 Field
Q: Is O-SEE Ultra Trail a XTERRA race? A: Yes. The 2026 edition is part of the official XTERRA Trail Run European Championship. XTERRA is an internationally recognised multi-sport and trail running race series.
Getting There: Dresden, Prague, and the Train to Zittau
Q: Which airport should I use for XTERRA O-SEE Ultra Trail? A: Dresden (DRS) and Prague (PRG) are both approximately 107 minutes by road — one of the few German trail races with genuine dual-airport flexibility. Train to Zittau is possible with a short last-mile transfer. Accommodation in the Zittau region fills quickly on race weekend — book early.
Race files
Logistics
Nearest airport
Dresden (DRS) / Prague (PRG)
Notes
Start: ~1–2.5 hrs drive to Zittau Olbersdorfer See area / Public transport: train to Zittau possible; last-mile short taxi or walk / Accommodation: limited in Zittau region on race weekend; book early
