Since 2004, Raidlight has been the organizer of the WinterTrail
Winter isn’t something you watch from afar. You live it since 2004, every year, on the Raidlight Winter Trail in Chartreuse.
Snow, cold, night: we know extreme conditions. We test our gear on our own races. Gloves, beanies, waterproof jackets, crampons: everything is designed so you keep moving forward, even in harsh negative temperatures.
Winter deserves to be run. And Raidlight is here to gear you up.
The 4 challenges of winter trail running
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RUNNING AT -10°C
The cold grips you from the very first stride. Your fingers go numb. Your body fights to stay warm. If your gear fails, you give up.
The Raidlight solution: Wintertrail shirt (412g), thermal base layer. Ultralight MP+ 25K/50K jacket (175g), highly breathable. Three-layer system suited for extreme cold.
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PROTECT YOUR EXTREMITIES
Your hands freeze. Your ears burn. Your feet lose sensitivity. The extremities are the first to give in to the cold.
The Raidlight solution: Trail Touch MP+ 10K/10K gloves (35g), waterproof and touchscreen-compatible. Wintertrail beanie Made in France (35g). Technical anti-cold socks.
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HOLDING ON SNOW AND ICE
The trail is icy. Every step is uncertain. One slip and it's a fall. Traction becomes vital.
The Raidlight solution: Snowline Trail chains (170g), 18-point crampons for deep snow. Snowline City chains (60g) for frozen trails. Guaranteed grip.
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STAY DRY
It’s snowing. Your jersey is wet. The cold seeps in. Once soaked at -5°C, it’s impossible to warm up.
The Raidlight solution: Top Extreme MP+ 20K/20K jacket (200g), ultra-waterproof. Ultralight MP+ pack (jacket + pants, 280g) for total protection. You stay dry, you keep going.
How to dress for -10°C: the Raidlight thermal strategy
Running in freezing cold is a science. Too many layers = overheating. Not enough = hypothermia. Here’s how to regulate.
PRINCIPLE 1: PROTECT THE EXTREMITIES FIRST
Gloves, hat, technical socks: they give out first. Always cover them, even if you feel warm elsewhere.
PRINCIPLE 2: 3 MODULAR LAYERS
✅ Layer 1 to wick: Seamless or R-Light ML
✅ Layer 2 to insulate: Wintertrail Jersey (412g)
✅ Layer 3 to protect: Ultralight MP+ Jacket or Top Extreme
PRINCIPLE 3: REMOVE BEFORE OVERHEATING
As soon as you start sweating, take off a layer. Sweat + cold = brutal cooling.
THE GEAR FOR WINTER RUNNERS
Here is the gear worn by the finishers of the Raidlight Winter Trail, the SaintéLyon, and winter mountain races. Tested at -15°C.
The must-haves tested in the field
View all-
Men's long-sleeve trail running shirt
320 g
Sale price €79,90 EUR Regular price €89,90Unit price /Unavailable -
Women's trail tights
240 g
Sale price €79,90 EUR Regular price €89,90Unit price /Unavailable -
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Unisex waterproof jacket
175 g
Sale price €279,90 EUR Regular price €319,90Unit price /Unavailable
FAQ
Your questions about winter gear
When to use crampons?
When to use crampons?
Ice-covered terrain or groomed trail = Snowline City Chains (60g), light grip.
Deep snow or technical snowy singletrack = Snowline Trail Chains (170g), 18 spikes. Fixed crampons are forbidden in races. Chains are removable and legal.
How to protect my hands at -10°C?
How to protect my hands at -10°C?
2 options:
- Trail Touch MP+ 10K/10K Gloves (35g): waterproof, touchscreen-compatible, perfect for -5°C to -10°C.
- Ultralight MP+ 20K/20K Mittens (20g): ultra-light over-gloves to put on if your hands freeze.
Always start with gloves on from the beginning, even if you feel warm.
Do you need a waterproof jacket for winter trail running?
Do you need a waterproof jacket for winter trail running?
Yes, always. Snow wets just as much as rain. And once soaked at -5°C, there's no way to warm up.
Ultralight MP+ 25K/50K Jacket (175g) or Top Extreme MP+ 20K/20K (200g): ultra-waterproof, ultra-breathable.
Can you run safely at -15°C?
Can you run safely at -15°C?
Yes, as long as you're perfectly equipped:
✅ 3 thermal layers (wick away, insulate, protect)
✅ Gloves + beanie + technical socks
✅ Breathable waterproof jacket
Below -15°C, risk of frostbite on extremities. Always pay attention to your sensations.
Raidlight advises on gear selection?
Raidlight advises on gear selection?
Yes! Call us at 04 76 53 35 55 or come see us at the Saint-Pierre-de-Chartreuse store. We'll test the gear with you based on your winter goals.
