Trail du BW - 62km

36 days away

62 km Distance

1,180 m Climbing

4.9 Grit · Challenging

50.6775° N, 4.7212° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 19 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 10 hours 9:41 min/km average. Tight. Sustained running. Long aid-station stops will cost you. Tighter than 80% of 50 mi races. Measured against 482 races of the same distance. Cut-off calculator →

Field size ~77 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 edition (62km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, December

Daytime high 5°C

Night low 0°C

Rainfall Mostly dry

Daylight 8 h 11 m of light

Regional 2001-2020 average for December — NASA POWER, grid elevation 177 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	62km	77	Sam Verkaeren · 05:05:49	Stephanie Paternostre · 06:28:47
2023	62km	46	Timothy de Vos · 04:48:13	Katja Malfliet · 05:51:42

The field grew 67% between 2023 (46) and 2025 (77). 14% of the 2025 field were women.

DUV results for the 2025 edition (62km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

terrain This is a rolling course. Expect fast, runnable sections where rhythm is key.
gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.

Gear for this race

Chosen for 62 km of trail with 1,180 m of ascent.

Trail Running Shoes 62 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 62 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 62 km, without the bounce.
GPS Watches Battery life first — a 62 km day outlasts most full-GPS modes.

Adidas

Terrex Speed Ultra

RunRepeat found the Adidas Terrex Speed Ultra to have a grippy outsole and great lockdown, while iRunFar noted that the shoe works on a variety of trail conditi…

★★★★★ 4.5

New Balance

Fuel Cell Super Comp Trail

★★★★★ 4.5

Skratch Labs

Sport Hydration Mix

Clean electrolyte drink mix with real fruit flavor. Low sugar.

$20 ★★★★★ 4.5

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

COROS

APEX 2 Pro

GPS running watch with 75-hour GPS battery, topo maps, and training metrics.

$500 ★★★★★ 4.7

All gear guides →

Overview

Organised by Blancs Gilets, the Trail du BW covers 62km around Chaumont-Gistoux, Belgium, each December.

With 1180m of total ascent across the route, the course averages 19m of climbing per kilometre, presenting rolling terrain rather than severe mountain gradients. The primary hurdle is the clock: the 10-hour limit requires maintaining a steady pace faster than 9.7 minutes per kilometre. That cut-off is tighter than 79% of 50mi peers and more generous than 21%, leaving little room to recover from pacing lapses on the trail.

At the 2025 edition, 77 runners completed the distance, placing the event into a cohort that is bigger than 66% of 50mi fields and smaller than 34%. Entry fees range between 30 and 45€.

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