O-SEE 100k
100.7 km
Distance
4:00 am
Start
3,654 m+
Elevation
20h
Time limit
11 x
Stations
O-SEE 100k Ultra Trail & Team DUO
Would you like a little more? For the first time in 2025, we are offering a genuine ultra trail over 100 kilometers. The track runs for around 35 kilometers through the Bohemian part of the Lusatian Mountains. You will be amazed!
THE FACTS
Age
From 18 years of age
Entry fee
Staggered, from € 110.00 / € 190.00
Awards
SINGLE: 1st - 6th place M/F Overall
Team DUO: 1st place M/F/Mix
Cut off
For the safety of all runners, there is a cut-off time at the following points:
-
K45: Hochwald/Pod Hvozdem (50.822337 N, 14.722908 E)
Time 1:00 pm -
K50: Mařenice/Antonínovo údolí (50.807339 N, 14.666308 E)
Time 2:00 pm -
K84: Brandsteinweg/Wiesenweg (50.831850 N, 14.741903 E)
Time 8:45 pm
Switch
Participants of the O-SEE 100k can change to the shorter distance 75k during the running competition. This switch is possible with timing and scoring. The organisation office must always be informed of this by telephone or at the latest by announcing it at the course switch point. Participants who reach the cut off point “K84 Brandsteinweg/Wiesenweg" after 8:45 pm must run directly towards the finish.
Switch Points:
-
O-SEE 100k ➘ 75k: Mařenice/Antonínovo údolí (50.807339 N, 14.666308 E) = K50
-
O-SEE 100k ➘ 75k: Brandsteinweg/Wiesenweg (50.831850 N, 14.741903 E) = K84 … (total distance 85 kilometers)
5 TRAILS
Take the first step
Put on a smile
Love the weather
Push yourself
Beat your record
Cross the finish line
Mandatory and suggested equipment
There is a mandatory equipment requirement and additional recommendations for participating in the trail runs. Sporadic checks are carried out.
The mandatory equipment includes:
Pflicht | O-SEE 100k | O-SEE 75k | O-SEE 50k | O-SEE 25k | O-SEE 16k |
|---|---|---|---|---|---|
Drinking container (no cups at the refreshment points) | X | X | X | X | X |
Water container | 1 L | 1 L | 1 L | ||
Energy gels & bars | X | X | X | ||
GPS tracker device (will be available at the check-in) | X | X | X | X | |
GPX-capable phone or navigation watch with track/route data | X | X | X | ||
Mobile phone | X | X | X | ||
Headlamp | X | X | |||
ID and Health insurance card | X | X |
Suggested Equipment:
Empfehlung | O-SEE 100k | O-SEE 75k | O-SEE 50k | O-SEE 25k | O-SEE 16k |
|---|---|---|---|---|---|
Closed trail running shoes with tread sole | X | X | X | X | X |
Weatherproof clothing | X | X | X | X | X |
Running backpack | X | X | X | X | X |
Mobile phone (with emergency number) | X! | X! | X! | X | X |
GPX-capable phone or navigation watch with track/route data | X! | X! | X! | X | X |
First Aid Kit (tape bandage, elastic bandage, compress, plaster) | X | X | X | X | X |
Safety whistle | X | X | X | X | X |