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L'Armentieroise by Night la Grande Ourcq

Name: L'Armentieroise by Night la Grande Ourcq
Start: 2025-12-13
End: 2025-12-13
Location: Armentières-en-Brie

Armentières-en-Brie, Hauts-de-France, France

calendar_today 13 Dec, 2025

directions_run Running

language Official Website

About the Event

Challenge your limits at La Grande Ourcq (LGO), a unique ultra-distance night adventure in Armentières-en-Brie on December 13, 2025! This 4th edition offers three epic distances—29km, 69km, and 105km—for runners and run-and-bike duos, all starting in the evening for a true test of endurance. Unlike traditional races, LGO is a self-navigated, semi-autonomous raid where participants follow GPX tracks through the picturesque Pays de l'Ourcq. With live GPS tracking, mandatory safety gear, and a focus on personal achievement over competition, it's the ultimate challenge for experienced adventurers. Registration is limited to 99 participants per distance—secure your spot for this unforgettable journey under the stars!

Races Offered

16 km

Dec 13, 2025

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Distance — 16K

terrain

Type — Running

timer

19:00

Trail M (75-114 km-effort)

Dec 13, 2025

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Distance — 65K

terrain

Type — Running

timer

19:00

If

Dec 13, 2025

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Distance — If

terrain

Type — Running

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-290 days remaining

Weather History

These values represent the 3-year monthly averages for December in Armentières-en-Brie.

thermostat Temperature

3.7° / 8.3°

wb_sunny Feels like

-0.5° / 4.5°

light_mode Avg sunshine hours

2h 50m

water_drop Avg rainfall

2.1 mm

ac_unit Avg snowfall

—

air Avg wind speed

14.6 km/h (Gentle breeze)

opacity Sweat loss rate

Low

terrain Course conditions

Firm and slightly soft

sunny Max UV Index

Low (1.4)

humidity_mid Humidity

88.6%

wb_twilight Sunrise

09:33

nightlight Sunset

17:52

About Armentières-en-Brie

Learn more about the host city, Armentières-en-Brie.

Armentières-en-Brie is a commune in the Seine-et-Marne department in the Île-de-France region in north-central France.

Things to Do Nearby

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L'Armentieroise by Night la Grande Ourcq

About the Event