Why Mandatory Gear Matters
Mandatory gear lists are not suggestions; they are rules designed for your safety. Mountain weather can change rapidly, and if you are injured and unable to move, you need to stay warm until help arrives.
The Running Vest
A comfortable, well-fitting hydration vest is essential. It needs to have enough capacity (usually 10-15 liters for a 100K) to carry all your gear without bouncing. Practice running with your fully loaded vest during training.
Clothing Essentials
Most races require a waterproof jacket with taped seams. Don't skimp here; a high-quality jacket can save your life. You may also need waterproof trousers, a long-sleeve thermal base layer, a warm hat, and waterproof gloves.
Safety Equipment
A survival blanket is universally required. A whistle (often built into the vest) and a small first aid kit (including bandages, blister care, and any personal medication) are also standard. A headlamp with spare batteries is critical for night sections.
Navigation and Communication
Always carry a fully charged mobile phone. Keep it turned off or in airplane mode to save battery. A physical map of the course or a GPX track loaded onto your watch or phone is often required.
Nutrition and Hydration Minimums
Races usually specify a minimum capacity for water (e.g., 1-1.5 liters) and a minimum number of calories to carry as emergency food. Always carry more than the minimum if you know you eat or drink heavily.