RequiredVest / pack
Hydration vest
Vest model and size change the baseline carry weight.
Item weight
247 g
Tools
Ultra-trail kit and carried weight planner
Build your complete race setup, calculate your start-line load, and check it against typical UTMB-style mandatory kit requirements.
Actual setupActual carried weightRequirement check
Planner workspace
Plan your full race kit
Start with a UTMB-style default, then replace the assumptions with your own measured gear, quantities, and fill levels.
- 01
Choose a category
- 02
Adjust your setup
- 03
Review the summary
Pick a category, turn items on or off, then use Edit to change model, quantity, fill level, or measured weight.
Currently editing
Mandatory clothing
7 items in this section
Use filters to isolate required items, missing items, or entries with your own measured weight.
RequiredMin. 10,000 mm
Waterproof jacket
Minimum 10,000 mm waterproof membrane with hood.
Item weight
198 g
RequiredWarm layer
Warm midlayer
Second thermal layer for cold or exposed sections.
Item weight
228 g
RequiredFull leg cover
Long leg covering
Full-leg coverage such as long tights.
Item weight
178 g
RequiredHead cover
Beanie / Buff
Head protection against cold, wind, or exposure.
Item weight
38 g
RequiredHand protection
Waterproof gloves
Warm and weather-protective hand layer.
Item weight
74 g
Optional
Waterproof trousers
Optional weather layer for cold, wet, or exposed sections.
Item weight
0 g
Weight summary and compliance
3.24 kg
Looks complete — verify race rules
Planning guide only. Organizers can require different items, wording, or minimum standards.
- Gear weight
- 1.52 kg
- Fluids
- 1.50 kg
- Fuel
- 220 g
- Optional extras
- 92 g
- Custom items
- 0 g
Missing required
None
Customized items
None
Heaviest items
- Soft flasks1.61 kg
- Hydration vest247 g
- Warm midlayer228 g
- Smartphone200 g
- Waterproof jacket198 g
Biggest weight increases vs default
- None
Packing guidance
Front pocket
Keep fluids and items you touch repeatedly within one-hand reach.
Soft flasks, Smartphone
Front lower pocket
Use this for fuel, cup, and fast-access small items.
Energy gels, Collapsible cup, Whistle
Rear main compartment
Bulky but not urgent gear belongs here, packed tight to reduce bounce.
Long leg covering
Rear quick-access
Use for items you may need between aid stations without unpacking everything.
Beanie / Buff, Waterproof gloves, Energy bars, Headlamp
Waterproof bag
Keep safety gear and spare layers dry and grouped together.
Waterproof jacket, Warm midlayer, Spare battery / power bank, Emergency blanket, Elastic bandage, ID document
Worn on body
Items worn on the body still affect total weight and running stability.
Hydration vest
Mandatory kit checklist
Ultra-trail races require mandatory equipment. The list below shows a typical kit for a 100 km race, but shorter distances also have their own gear requirements. This is not a recommendation. It is a condition for starting. Race stewards can check your pack at any point during the race. A missing item means a time penalty or disqualification. The list is based on the UTMB World Series standard, which applies at most mountain races in Europe. Specific requirements may vary by organizer. Always check the regulations of your race.
List based on the UTMB World Series 2025 standard. Requirements may vary by race and organizer. Always check the official regulations of your event.
What weight does to your race
Every extra kilogram on your back costs energy. Energy expenditure per kilometre rises, running economy deteriorates, and the body responds with greater oxygen consumption and a higher heart rate. Studies on runners carrying 2–3 kg backpacks have found significantly higher oxygen consumption and energy cost at submaximal speeds (Scheer et al., 2019). Other research observed an acute performance impairment of around 4 % from just 2.4 kg of added load at the torso (Sharp et al., 2021).
In an ultratrail, this does not stay small. It accumulates over many hours. The higher energy demand accelerates glycogen depletion, increases muscular fatigue, and can bring on an earlier performance drop in the second half of the race.
Even a few hundred grams more or less can make a noticeable difference by the finish, especially over long distances and on courses with substantial elevation gain.
The weights listed above are guidelines. The actual weight of a piece of gear depends on its size, material, and manufacturer. Weigh your own gear before the race.
FAQ
Sources
- Scheer V, Cramer L, Heitkamp HC. Running economy and energy cost of running with backpacks. J Sports Med Phys Fitness. 2019;59(4):555–560.
- Sharp DW, Swain TG, Boy LK, Killen JM, Green JM, O’Neal EK. Examination of effects of modest loading via a ~2.4 kg soft and malleable weighted compression garment on overground running performance. 2021.
Weight summary and compliance
3.24 kg
Looks complete — verify race rules
Planning guide only. Organizers can require different items, wording, or minimum standards.
- Gear weight
- 1.52 kg
- Fluids
- 1.50 kg
- Fuel
- 220 g
- Optional extras
- 92 g
- Custom items
- 0 g
Missing required
None
Customized items
None
Heaviest items
- Soft flasks1.61 kg
- Hydration vest247 g
- Warm midlayer228 g
- Smartphone200 g
- Waterproof jacket198 g
Biggest weight increases vs default
- None
Packing guidance
Front pocket
Keep fluids and items you touch repeatedly within one-hand reach.
Soft flasks, Smartphone
Front lower pocket
Use this for fuel, cup, and fast-access small items.
Energy gels, Collapsible cup, Whistle
Rear main compartment
Bulky but not urgent gear belongs here, packed tight to reduce bounce.
Long leg covering
Rear quick-access
Use for items you may need between aid stations without unpacking everything.
Beanie / Buff, Waterproof gloves, Energy bars, Headlamp
Waterproof bag
Keep safety gear and spare layers dry and grouped together.
Waterproof jacket, Warm midlayer, Spare battery / power bank, Emergency blanket, Elastic bandage, ID document
Worn on body
Items worn on the body still affect total weight and running stability.
Hydration vest
Total carried weight
3.24 kgLooks complete — verify race rules
Training plans
Prepare your body, not just your gear
Packing is sorted. Now make sure your fitness matches the weight you carry and the distance ahead.
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