On Saturday, June 6th, the "trail and duathlon" event combines two rarely associated disciplines: running or hiking in nature and road cycling. Participants are free to choose one or both. The municipalities of Theux, Spa, Stavelot, Aywaille, and Stoumont offer some of Belgium's most beautiful natural landscapes, both in the forest, such as the Ninglinspo Valley, and on the road, with its legendary climbs made famous by the Liège-Bastogne-Liège cycling race. This June 6th, the unique "Assault of the Maquisard" event will allow you to discover these two natural gems.
Starting from the Liège University of Applied Sciences and Arts in La Reid (Theux), five trail running distances are offered, three of which are open to walkers, and four duathlons. The distances cater to beginners (30km bike ride, e-bikes accepted, participants in the "I run/walk for fitness" category) as well as experienced runners who can tackle, for example, the 40km trail run or the "2500m D+" duathlon, which combines 70km cycling and 25km running.
In 2026, all starts are scheduled for the morning, as requested in the post-race survey in 2025.
Good luck with your preparations everyone!
Races Offered
40K trail
Jun 13, 2026
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Distance —
40K
terrain
Type —
Cycling,
Multisports
timer
12:00
13K trail
Jun 13, 2026
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Distance —
13K
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
13K walk
Jun 13, 2026
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Distance —
13K
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
25K trail
Jun 13, 2026
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Distance —
25K
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
35K cycling
Jun 13, 2026
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Distance —
35K
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
50K cycling
Jun 13, 2026
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Distance —
50K
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
5K trail run/walk
Jun 13, 2026
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Distance —
5K
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
70K cycling
Jun 13, 2026
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Distance —
70K
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
Duathlon 35K bike + 5K trail
Jun 13, 2026
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Distance —
35 km 5 km
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
Duathlon 50K bike + 13K trail
Jun 13, 2026
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Distance —
50 km 13 km
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
Duathlon 70K bike + 13K trail
Jun 13, 2026
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Distance —
70 km 13 km
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
Duathlon 70K bike + 25K trail
Jun 13, 2026
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Distance —
70 km 25 km
terrain
Type —
Cycling,
Multisports
timer
21 days remaining
Weather History
These values represent the 3-year monthly averages for June in Becco.
thermostatTemperature
12.8° / 22.0°
wb_sunnyFeels like
10.9° / 20.1°
light_mode
Avg sunshine hours
12h 0m
water_drop
Avg rainfall
2.9 mm
ac_unit
Avg snowfall
—
air
Avg wind speed
11.6 km/h (Light breeze)
opacity
Sweat loss rate
Moderate
terrain
Course conditions
Firm and slightly soft
sunny
Max UV Index
Moderate (5.6)
humidity_mid
Humidity
68.6%
wb_twilight
Sunrise
05:25
nightlight
Sunset
21:48
Hotels & Places to Stay
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