Some trails take place over part of the night, or even the entire night. Unlike daytime racing, specific preparation and gear setups are essential. Visibility drops, requiring extra caution. You also need to stay visible, brave the cold, and manage deep fatigue. Here is everything you need to know about night trail running.
Strategies for efficient night running
Hydration and nutrition
Just like during the day, managing hydration and nutrition is vital for night trail running. Throughout the race, space out your intake by eating small amounts every 30 to 45 minutes. Alternate between fast and slow-release carbohydrates, focusing on easily digestible foods.
While dehydration typically occurs less quickly than in broad daylight, drink regularly nonetheless. We recommend alternating between water and energy drinks to replenish lost minerals and carbohydrates. At aid stations, savoury soups are ideal: they warm you up, rehydrate, and provide sodium.
Pace and stride
One of the main challenges of a night trail is visibility. Even with a good headlamp, vision is reduced. You must therefore adopt a more cautious pace, especially on descents. Shorten your stride and lift your feet slightly higher to avoid roots or rocks.
Posture also plays a key role. To anticipate obstacles, keep your eyes focused well ahead. Maintain a slightly engaged core to quickly react to any loss of balance.
Regular training
Solid trail preparation starts with training in real conditions. If you plan to run a night trail, daytime runs will not be enough. You must also incorporate night sessions, ideally at times close to your upcoming race start.
Training in real conditions is the best way to prepare effectively. Your body learns to perform at unusual hours, and your mind gets used to managing fatigue and darkness. You also adapt to the unique atmosphere of the night and can test your gear.
Gear essentials for night trail running
Clothing and accessories
At night, weather conditions can become harsher. The ground and air cool down, the risk of fog rises, and weather shifts are harder to spot. The best approach is to layer up so you are ready for any situation.
Choose long-sleeved technical tops as a base layer. Add lightweight fleeces or warm trail jackets as a mid-layer. Throw on windproof and waterproof jackets as an outer shell if needed. In cold conditions, skip the shorts and opt for tights or trail trousers.
Heat loss occurs through the extremities. To combat this, choose a lightweight beanie, a headband or buff, thin or thermal gloves depending on the season, and warm yet breathable socks.
Headlamp
Trail headlamps are essential at night. Whether worn on the head or chest, they must deliver powerful and stable lighting. Some models feature reactive lighting that automatically adjusts the beam based on ambient light.
To properly choose a trail headlamp, pay attention to the lumen output—meaning its lighting power. For a night trail in varied conditions, we recommend a versatile headlamp delivering around 400 to 600 lumens with multiple modes. You should also monitor its battery life. In cold weather, runtime can drop fast. Carrying two batteries or two headlamps is recommended to ensure you are never left in the dark.
Safety gear
Finally, heightened safety is essential when running a night trail. Pack an emergency blanket, a whistle or beacon light for emergencies, a charged phone with GPS tracking enabled, as well as a map or GPS device.
A headlamp alone is not enough to be seen by others, especially drivers. For this, accessories with reflective strips are essential. You can wear a jacket with reflective details on the front and back, as well as bands around your ankles and arms, which catch the eye more effectively.
The best night trail races
The SaintéLyon
Some races have become true legends in the trail world. Among them, the SaintéLyon is probably the most iconic night trail. Created in 1952, it brings together over 20,000 participants each year and takes place on the first weekend of December.
It starts at night, usually at 11:30 pm. Runners must link the cities of Saint-Étienne to Lyon, mostly via countryside trails. It is a demanding race available in 8 formats, from 13 to 164 km. The most popular remains the 81 km route with 2,000 m of positive elevation gain.
The Grand Trail Nocturne des Hauts-de-France
On another note, the Grand Trail Nocturne des Hauts-de-France is also worth considering. Based in Liévin, it offers a more accessible format than some of the iconic races. Its 61 km course with 800 m of positive elevation gain remains demanding, featuring single tracks, steep climbs, and lush slag heaps.
The Ultra-Trail du Mont-White
It is impossible to talk about night trail running without mentioning the Ultra-Trail du Mont-White (UTMB). While it is not run exclusively at night, runners typically spend two nights outside. The race actually starts around 6:00 pm. Covering 170 km and 10,000 m of positive elevation gain, the route circles Mont White, crossing Italy, Switzerland, and France. A legendary race with breathtaking landscapes.
Running a night trail demands discipline and foresight. By preparing thoroughly, testing your gear, and listening to your body, you will make the most of this unique experience. Once out on the trail, stay alert, keep a steady pace, and enjoy every moment!
Photo credits: Delphine Danielou and Lilian Menetrier
