top of page
HOME
RACES
O-SEE 100K
O-SEE 75K
O-SEE 50K
O-SEE 25K
O-SEE 16K
LIGHT 6.6K
JUNIORS 4K
YOUNGSTERS 1.3K
MINIS 500M
WALKING 6.6K
O-SEE CANICROSS 6K
O-SEE CANICROSS 3K
ENTRY INFO
RUNNERS GUIDE ULTRA TRAIL
RUNNERS GUIDE CANICROSS
NEWS
XTERRA
REFRESHMENT
EVENT AREA
RESULTS ULTRA TRAIL
RESULTS CANICROSS
ABOUT US
SHOP
PARTNER
CONTACT
HOME
RACES
O-SEE 100K
O-SEE 75K
O-SEE 50K
O-SEE 25K
O-SEE 16K
LIGHT 6.6K
JUNIORS 4K
YOUNGSTERS 1.3K
MINIS 500M
WALKING 6.6K
O-SEE CANICROSS 6K
O-SEE CANICROSS 3K
ENTRY INFO
RUNNERS GUIDE ULTRA TRAIL
RUNNERS GUIDE CANICROSS
NEWS
XTERRA
REFRESHMENT
EVENT AREA
RESULTS ULTRA TRAIL
RESULTS CANICROSS
ABOUT US
SHOP
PARTNER
CONTACT
REGISTER
Working with the Best
Partners & Sponsors
We would like to thank all of our sponsors who support us both financially and with their expertise.
Track sponsors
O-SEE 65k
O-SEE 50k
O-SEE 25k
O-SEE 16k
Light 6,6k
Juniors 4k
Youngsters 1,3k
Minis 500m
Canicross
Partners and sponsors
Municipal partners
O-SEE Ultra Trail Official Partners