220km / ULTRA
ULTRA.
220K
D+ 3.500
6.09.26
BOUILLON
Follow the flow of the Semois
All routes start in the heart of Bouillon, at the foot of its legendary medieval castle. From there, riders follow the river upstream into a landscape of endless forest trails, open valleys, and timeless villages — a natural playground built for gravel.
The Parc National de la Semois delivers everything riders love: fast, rhythmic terrain, mixed surfaces, and wild beauty around every corner.
DISTANCE AND ALTITUDE
- Distance: 225km
- Positive Elevation Gain: +3.500m
- Accumulated Elevation Gain: 7.000m
- Maximum Altitude: 440m
- Minimum Altitude: 212m
TERRAIN
- Unpaved: 73%
- Paved: 27%
TIMES
- 1st finisher: 13:48h
- Cut-off Time: 18:40h
The River is built for endurance and enjoyment, not brutality. Expect smooth gravel, rolling climbs, and flowing descents through forest and countryside.
- Recommended tires: 38–45 mm fast-rolling gravel
- Recommended gearing: standard gravel setup
- Surface: ~75% gravel & forest, 25% tarmac & village roads
A route to enjoy every pedal stroke — pure flow from start to finish.
- Feed zones along all routes
- Medical & mechanical support points
- WC, showers & bike cleaning area
- Recycling & waste management zones
- Parking for cars, vans & motorhomes
(Exact locations to be confirmed)
SATURDAY
Check-in
Location: Event Village – Rue de la Poulie
Time: 14:00h – 18:00h
SUNDAY
Start
Location: Event Village – Rue de la Poulie
Time: 6:30h
Finish
Location: Event Village – Rue de la Poulie
Time: 13:48h – 18:40h
Finish Feed Zone
Location: Event Village – Rue de la Poulie
Time: 13:48h – 18:40h
- Pro/Elit woman
- Pro/Elit man
- Age Groups
Under 23
24-34 years
35-39 years
40-44 years
45-49 years
50-54 years
55-59 years
60-64 years
65-69 years
70-74 years - Open woman
- Open man
- Non binary
FEED ZONE 1 – Chassepierre / Breux – KM 45,2 – ASSISTANCE ALLOWED
1st participant: 8:00h – Cut off time: 9:00h
FEED ZONE 2 – Epioux – KM 100,2 – ASSISTANCE ALLOWED
1st participant: 9:50h – Cut off time: 12:04h
FEED ZONE 3 – Auby – KM 133,4 (Restricted access, only cyclists)
1st participant: 10:56h – Cut off time: 13:54h
FEED ZONE 4 – Poupehan – KM 173 (Restricted access, only cyclists)
1st participant: 12:16h – Cut off time: 16:06h
FINISH FEED ZONE – Bouillon – Cut off time: 18:40h
* Only athletes are allowed to enter the feed zones, mechanical and food assistance is prohibited.
* Remember that in the life bases, we do not provide any single-use containers.
FEED ZONE PRODUCTS
Feed zone 1, 2, 3 & 4:
Finish: