TDLS - Night Trail & Ultra Trail of Siberia
Trail Running covering 35 km to 125 km with up to 3,860 m D+ in Profondeville (Wallonia, Belgium)
TDLS - Night Trail & Ultra Trail of Siberia is an endurance sporting event in Profondeville, Wallonia, BE focused on Trail Running. Key features include Nature & Off-Road, Forest, Night Run, Relay.
The race program comprises 12 competitions, including Trail 125 km (125 km, +3,860 m D+), Trail 125 km (Duo) (125 km, +3,860 m D+), Trail 100 km (100 km, +3,000 m D+), Trail 100 km (Duo) (100 km, +3,000 m D+), Trail 75 km (75 km, +2,300 m D+), and Trail 75 km (Duo) (75 km, +2,300 m D+) (12 competitions in total). The exact date for the next edition is currently open and will be announced by the organizer. Official race regulations, course details, and registration information are provided on the organizer's website (trail-de-la-siberie.com).

Event characteristics
Races & distances (12)
| Competition | Discipline | Distance | Elevation gain | Altitude range | Course type | Course & profile |
|---|---|---|---|---|---|---|
| Trail 125 km | Trail Running | 125 km | +3,860 m | 77 m - 1,698 m | Loop course | Route & profile |
| Trail 125 km (Duo) | Trail Running | 125 km | +3,860 m | 80 m - 1,701 m | Loop course | Route & profile |
| Trail 100 km | Trail Running | 100 km | +3,000 m | 83 m - 1,343 m | Loop course | Route & profile |
| Trail 100 km (Duo) | Trail Running | 100 km | +3,000 m | 86 m - 1,346 m | Loop course | Route & profile |
| Trail 75 km | Trail Running | 75 km | +2,300 m | 89 m - 1,055 m | Loop course | Route & profile |
| Trail 75 km (Duo) | Trail Running | 75 km | +2,300 m | 77 m - 1,043 m | Loop course | Route & profile |
| Trail 52 km | Trail Running | 52 km | +1,700 m | 80 m - 794 m | Loop course | Route & profile |
| Trail 52 km (Duo) | Trail Running | 52 km | +1,700 m | 83 m - 797 m | Loop course | Route & profile |
| Trail 42 km | Trail Running | 42 km | +1,500 m | 86 m - 716 m | Loop course | Route & profile |
| Trail 42 km (Duo) | Trail Running | 42 km | +1,500 m | 89 m - 719 m | Loop course | Route & profile |
| Trail 35 km | Trail Running | 35 km | +1,300 m | 77 m - 623 m | Loop course | Route & profile |
| Trail 35 km (Duo) | Trail Running | 35 km | +1,300 m | 80 m - 626 m | Loop course | Route & profile |
Course route & map
Elevation profile & course telemetry
Altitude from 77 m to 1,698 m above sea level (+3,860 m D+, -3,860 m D-)
Elevation profile & course telemetry
Altitude from 80 m to 1,701 m above sea level (+3,860 m D+, -3,860 m D-)
Elevation profile & course telemetry
Altitude from 83 m to 1,343 m above sea level (+3,000 m D+, -3,000 m D-)
Elevation profile & course telemetry
Altitude from 86 m to 1,346 m above sea level (+3,000 m D+, -3,000 m D-)
Elevation profile & course telemetry
Altitude from 89 m to 1,055 m above sea level (+2,300 m D+, -2,300 m D-)
Elevation profile & course telemetry
Altitude from 77 m to 1,043 m above sea level (+2,300 m D+, -2,300 m D-)
Elevation profile & course telemetry
Altitude from 80 m to 794 m above sea level (+1,700 m D+, -1,700 m D-)
Elevation profile & course telemetry
Altitude from 83 m to 797 m above sea level (+1,700 m D+, -1,700 m D-)
Elevation profile & course telemetry
Altitude from 86 m to 716 m above sea level (+1,500 m D+, -1,500 m D-)
Elevation profile & course telemetry
Altitude from 89 m to 719 m above sea level (+1,500 m D+, -1,500 m D-)
Elevation profile & course telemetry
Altitude from 77 m to 623 m above sea level (+1,300 m D+, -1,300 m D-)
Elevation profile & course telemetry
Altitude from 80 m to 626 m above sea level (+1,300 m D+, -1,300 m D-)
Frequently asked questions (FAQ)
When and where does TDLS - Night Trail & Ultra Trail of Siberia take place?
TDLS - Night Trail & Ultra Trail of Siberia takes place in Profondeville, Wallonia, BE (start area at coordinates 50.3758° N, 4.8651° E). The exact date for the next edition is currently open and will be announced by the organizer.
What races and distances are offered at TDLS - Night Trail & Ultra Trail of Siberia?
The race program comprises 12 competitions, including Trail 125 km (125 km, +3,860 m D+), Trail 125 km (Duo) (125 km, +3,860 m D+), Trail 100 km (100 km, +3,000 m D+), Trail 100 km (Duo) (100 km, +3,000 m D+), Trail 75 km (75 km, +2,300 m D+), and Trail 75 km (Duo) (75 km, +2,300 m D+) (12 competitions in total). The competitions belong to Trail Running.
What is the course layout and elevation profile for TDLS - Night Trail & Ultra Trail of Siberia?
The main competition (Trail 125 km over 125 km) is designed as a loop course featuring +3,860 m of elevation gain and -3,860 m of elevation loss, ranging between 77 m and 1,698 m above sea level. An interactive course map with route visualization, elevation profile, and GPX export is available in the course section on this page.
Where can I find registration and official race rules for TDLS - Night Trail & Ultra Trail of Siberia?
Official race regulations, course details, and registration information are provided on the organizer's website (trail-de-la-siberie.com).