The gear you really need for your first trails: grippy shoes, a windproof jacket, water — plus the mandatory alpine safety kit for the mountains.
The honest answer first: for your first trails you need far less than the shop wants to sell you — grippy trail shoes, a windproof jacket, water and a charged phone are enough for a first lap in the woods. Everything else is comfort, not a must. Only when you head high into the mountains does "nice to have" turn into real safety gear: alpine races don't demand a waterproof jacket, two headlamps and a survival blanket for nothing. The one item that truly changes everything is your shoes. Their tread, their drop and their cushioning decide how safely and how fresh you arrive at the bottom. Let's work from the ground up — from the shoe to the emergency kit.
Get a versatile trail shoe with moderate tread — not the mud or rock specialist. Practical rule of thumb: a lug depth (the studs under the sole) of around 2–4 mm carries you on mixed forest and gravel paths, while deeper 6–8 mm is only needed for mud and snow (manufacturer practice, no study evidence). More important than any number is that the shoe fits: heel locked, room in the toe box. Buy in the afternoon when your foot is slightly swollen — then it still fits after 20 km.
Three terms and you'll understand any product page. Stack height is the material thickness under your foot — more stack means more cushioning but less ground feel. Drop is the height difference between heel and forefoot in millimeters. A low drop moves you onto your forefoot and lets you descend faster, but loads the Achilles tendon more — for beginners a mid drop (6–8 mm) is the more comfortable compromise. Lugs are the tread studs that provide grip.
From about an hour, add fluid: plan roughly 450–750 ml per hour, with a pinch of electrolytes in the heat. From two to three hours you need food — gels, bars or real food with around 30–50 g of carbohydrate per hour. A running vest carries both plus jacket and phone without bouncing. Test the vest fully loaded on a short run before wearing it for hours — a chafing strap otherwise ruins any long run.
The moment you leave the valley. High in the mountains, summer weather can swing from over 30 °C to below freezing. That's why alpine race series like the UTMB require a fixed mandatory list: waterproof hooded jacket, warm extra layer, hat and gloves, at least one liter of water, around 800 kcal of emergency food, two headlamps, survival blanket, whistle and phone. It's not red tape — it's exactly the gear that gets you through an unplanned night outside.
Always tell someone where you're running and when you'll be back — your phone is no substitute for a plan when the battery dies in the cold. In the mountains, the alpine mandatory list is a good benchmark even in training, not just for races. And don't drink ahead of thirst: too much fluid without salt can be more dangerous than too little — more on that in the safety guide.
Buy your trail shoes half a size bigger than your road shoes. On long descents your foot swells and slides forward; without room ahead of the toes you get black toenails (practical knowledge). The thumb-width test while standing — a thumb's width of space in front of the big toe — is your simplest insurance against ruined descents.
A versatile all-rounder with moderate tread (lugs around 2–4 mm) and a mid drop (6–8 mm) that fits well: heel locked, toes free. Specialist mud or rock shoes come later. Buy in the afternoon and half a size bigger than your road shoes so long descents still fit.
Stack height is the sole thickness (more cushioning, less ground feel), drop is the heel-to-forefoot height difference in millimeters, and lug depth is the height of the tread studs for grip. A low drop moves you onto your forefoot and lets you descend faster, but loads the Achilles tendon more.
From one hour, fluid (450–750 ml/h); from two to three hours, add food with 30–50 g of carbohydrate per hour. Plus a windproof jacket, a charged phone and telling someone. A running vest carries it all without bouncing — test it fully loaded once beforehand.
In the mountains the alpine mandatory base applies: waterproof hooded jacket, warm layer, hat and gloves, at least one liter of water, around 800 kcal of emergency food, two headlamps, survival blanket, whistle and phone. The weather can swing from heat to frost — this list gets you safely back down.
Trailrunning: Basic Stance and Fundamentals