The Trails Nutrition Calculator
The Trails Nutrition Calculator is designed to help you estimate your daily energy needs for the days you spend on the trail. The resources on this page support this calculator being used to work out the energy you need from food while hiking, trail running, and mountain or off-road cycling. However, it can be used for other sports and adventures using METs.
This tool takes into consideration your basal metabolic rate (BMR), the energy expenditure while on trail, and the energy expended during non-trail activities throughout the day. By calculating your total energy expenditure (TEE), you can better plan your nutrition and fuel your body for optimal performance during your trail adventures.
Trail Nutrition Calculator
Trail Fuel: Get it here
TRAIL FUEL BUNDLE a series of tools and resources designed specifically to support you on your hiking journey with nutrition.
How to use the Trails Nutrition Calculator
Follow the steps below to estimate your daily energy needs during your hiking trip.
Remember, this calculator provides an estimation of your energy needs, and individual results may vary. Monitor your energy levels and adjust your calorie intake as needed throughout your trail adventure. For more information about using this calculator and selecting METs and Non- Activity Factor, see the section below.
1. Weight & Height
Enter your weight in kilograms (kg) and your height in centimeters (cm).
2. Age & Sex
Provide your age in years and select your biological sex (male or female). This differs from gender which is how people identify.
3. Select a MET
Input the MET (metabolic equivalent of task) value that best represents the intensity of your hiking activity. MET is a single number assigned to different types and intensity of hiking (and other physical activity) Both simplified and detailed examples can be found further down this page.
4. Time Spent Hiking
Indicate the duration of your hiking activity in hours. You can use decimal points for partial hours (e.g., 1.5 hours for 1 hour and 30 minutes).
5. Non-Hiking Activities
Choose the non-hiking activity factor that best describes the level of physical activity you'll engage in during your non-hiking time, such as setting up camp or cooking.
6. Calculate
Click the "Calculate Total Energy Requirements" button to view your estimated daily energy requirements. This is how much food you will need for optimal health, performance, and recovery while hiking.
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Understanding METs for Different Trails Adventures
Metabolic Equivalent of Task (MET) is a unit of measurement used to quantify the intensity of physical activities, including hiking. A MET value represents the amount of energy expended during a specific activity compared to the energy expended during rest. Understanding MET values can help you estimate your energy expenditure during hiking, allowing you to fuel your body adequately and optimize your performance.
What are METs in the context of hiking? Hiking MET values can vary depending on factors such as the terrain, elevation gain, backpack weight, and individual fitness level. Higher MET values indicate more strenuous activities, while lower MET values represent less intense activities. Hiking MET values can be useful for estimating the energy expenditure associated with different hiking trails or conditions.
METs can be used to estimate an average of a specific trail based on it's terrain, climate, and how hard the hiking is considered to be. METs can also be used to calculate different levels of energy expenditure on different sections of the track. Although METs are an evidence based form of energy expenditure measurement, they are still an estimation.
To find your MET value, you can use this simple chart. The MET value is one number, so if you see a range such as 4-5 you can select the number that you feel best represents you hiking.
For an extensive list of more detailed MET options, see the lists at the bottom of the page.
Example METs for Different Trail Activities
Hiking:
General hiking: 6.0 METs
Hiking uphill with a 6-9 kg (13-20 lb) backpack: 7.0-7.5 METs
Hiking, cross-country (no specific incline): 6.3 METs
Hiking with a Pack:
Hiking with a light pack (4.5-9 kg / 10-20 lb): 7.0 METs
Hiking with a heavy pack (>9 kg / 20 lb): 8.3 METs
Trail Running:
Running on uneven terrain, trails: 9.8 METs
Running uphill, trail: 11.0 METs
Running downhill, trail: 7.8 METs
Mountain Biking:
Mountain biking, general: 8.5 METs
Mountain biking, uphill, vigorous effort: 14.0 METs
Mountain biking, moderate effort: 6.0 METs
These MET values help estimate energy expenditure, which can be used to calculate appropriate energy intake for these activities, depending on the intensity and duration.
For those calculating their energy needs based on METs, remember that individual energy expenditure varies with body weight, fitness level, and environmental factors like terrain and weather. This list provides a solid foundation, but adjustments may be needed based on specific circumstances
Adjusting METs to You
General Adjustments Based on Personal Factors:
Body Weight: MET values are typically calculated for a person weighing 70 kg (154 lbs). If a person weighs more or less, their energy expenditure will differ.
A general adjustment is:
For those heavier than 70 kg, the actual energy expenditure will be higher.
For those lighter, it will be lower.
Fitness Level:
People with higher fitness levels might find certain activities less strenuous, which could slightly reduce the effective MET value. Conversely, beginners or those with lower fitness might experience higher energy expenditure for the same activity.
Terrain and Weather Conditions:
Rougher terrain, steeper inclines, and harsher weather conditions (like high winds or extreme heat) will increase the MET value. For instance, hiking on a rocky, uneven trail with a heavy pack under hot conditions could increase the MET by 1-2 points.
Non-Hiking Activity Factor
Using the Non-Hiking Activity Factor is a simple way to estimate your energy requirements for the whole day. METs focus on a single activity, such as the hiking portion of your day. Some methods instruct to add up all of the METs for every single thing you do during the day. While this certainly would be accurate, it is also tedious and extremely time consuming. Instead, we have elected to use the Activity Factors, which is a calculation used in estimating Total Energy Expenditure (TEE).
The goal of the Activity Factor is to estimate how much energy you will need outside of the hiking component of your day.
Non-Hiking Activity Factor Examples
Consider these examples when selecting your Non-Hiking Activity Factor in the Calculator.
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Hiking METs
This is an extensive list of hiking METs to select from. You can use a MET that represents an average of the entire track you will be hiking, or a specific section you are planning for. Experimenting with different METs both while planning and training will give you an idea of your different food energy needs while hiking trails of different levels of difficulty and intensity.
Australian Hikes
METS for well know hiking tracks in Australia. These METs are an average of the entire trail.
Detailed Description
Lengthy list of detailed descriptions of hikes accounting for terrain, conditions, temperature, level of difficulty, and altitude.
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