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For anyone that is interested (and there is bound to be some!!), here’s how all the Challenge statistics calculated?
CO2 Saved
Burning Calories by Walking
Burning Calories by Cycling
Fat Burned
Parmo Calculator

CO2 Saved

The amount of CO2 saved by cycling or walking on this website relates to the number of cycling and walking trips that have been logged for transport purposes only. The statistic shows the total amount of CO2 that would be released by an average car and therefore illustrates an estimation of the amount of CO2 saved by cycling and walking instead of driving. It is calculated as follows:

Total miles travelled x kg CO2 per mile = total kg CO2

The estimate of CO2 used per mile was taken from Defra’s carbon conversion factor for an average car (fuel unknown)  and provided in ‘Guidelines to Defra’s Greenhouse Gas Conversion Factors for Company Reporting’, June 2008. (Guidelines to Defra's greenhouse gas (GHG) conversion factors for company reporting – annexes; Annex6; Table 6d). For a copy of this report please see here.

This is 0.3286kg CO2 per mile 

Burning Calories by Walking

A calorie is a measure of energy expenditure. The actual calories burned by a walker vary based on weight, age, body mass index, terrain and speed.

A moderate walking speed of 3.5 miles per hour has been assumed for our calculation of calorie expenditure with 83 calories burned per mile walked.

Burning Calories by Cycling

Cycling is a great form of aerobic exercise that will help you burn calories and lose weight. Plus, the greater your intensity--or rather, the faster you bike--the more calories you will burn.

Running vs. Biking

Although running is also a great form of aerobic exercise, the calories burned per mile always remains the same. Two things will alter the total calories burned---speed and weight. However, with biking there is wind resistance to add into the mix. Because of this, the faster you bike, the faster you burn not only total calories but calories per mile. Running will also give you a more intense workout, but it's easier to burn calories biking, meaning you won't have to bike as intensely as you run to burn the same number of calories.

Dr. Edward Coyle of The University of Texas in Austin determined average values of oxygen consumption by cyclists to develop a table to estimate the approximate caloric equivalence between running and cycling. He found that if you ride 20 miles at 15 mph, you burn 620 calories (20 miles X 31 calories per mile = 620 calories). Take the 620 calories and divide them by 110 calories per mile for running and you get 5.63 miles to burn the same number of calories. So riding a bicycle 20 miles at 15 miles per hour is equal to running 5.6 miles at any speed.

Dr. Coyle made the calculations easy by providing conversion factors for different riding speeds: 10MPH=4.2, 15MPH=3.5, 20MPH=2.9, 25MPH=2.3, and 30MPH=1.9.

This formula is for an average-size adult (approximately 155 pounds). A larger cyclist would divide by a slightly higher number; a smaller cyclist, by a slightly lower one. Wind and hills are not accounted for in the table; nor is drafting (riding behind another cyclist), which can reduce your energy expenditure by up to one-third.

Mph Cycling

Calories burned per mile












The conversion factor is not important for the calculations on this website.

For our calculations of calories burned by cycling, a moderate cycling speed of 15 miles per hour has been assumed; giving an average calorie expenditure of 31 calories burned per mile. This is based on an average-size adult of approximately 155 pounds.
Distance (miles) x calories/mile = total calories
Distance (miles) x 31 = total calories


One calorie has the same energy value as 4.184 kilojoules.

The total energy burnt by participants cycling and walking in the challenge has been measured using the calorie calculation above. The number of calories is converted into kilojoules by multiplying the value by 4.184.

Fat Burned

Cycling and walking burns body fat and so cycling or walking regularly can reduce our body fat percentage. There are 3,500 calories per pound of body fat. The statistic on this website for the total amount of fat burnt by participants relates to the total amount of energy expended for all cycle or walking trips logged divided by the amount of calories per pound of fat.

Total energy expended = total pounds of fat expended

Parmo Calculator

A brief history of the Parmo

The Parmo was created by Nicos Harris, a chef with the American army in World War II. He was wounded in France but was brought to the United Kingdom to be treated in a British hospital. Eventually, he moved to Middlesbrough and opened a restaurant on Linthorpe Road where he created the Parmo at the American Grill in 1958. His son-in-law, Caramello, still lives in Teesside and continues the family tradition.

In 2009, Asda started selling parmos in their shops in Teesside. They claimed they were selling 6,000 chicken parmos a week, making them at the time the shop's fastest selling line.

The Parmo was the subject of a question in the TV quiz show Eggheads on 13 November 2009. In the final round, when asked the region from which the Parmo originates, the challenging team incorrectly answered East Anglia, in preference to North Wales and the correct answer Teesside. The incorrect answer given meant that the Eggheads won that particular day's contest. Ironically for the show, Teesside was misspelled 'Teeside'.

Nutritional Information

In 2007 North Yorkshire Trading Standards conducted a survey of 25 fast food dishes. A large Parmo with chips and salad contains approximately 2600 calories and 150g of fat. UK Department of Health Estimated Average Requirements (EAR) are a daily calorie intake of 1940 calories per day for women and 2550 for men.

The parmo calculator works out the number of large parmo’s with chips and salad you can burn off relative to the number of miles you have walked or cycled in one week. E.g. if you have cycled 10 miles a day for 5 days in the last week you will have burned an average of 1550 (50x31) calories, which is equivalent to 60% of a parmo and chips! If you have walked 4 miles a day for 5 days in the last week you will have burned an average if 1660 (83x20) calories, which is equivalent to 64% of a parmo and chips!

The goal is to cycle or walk enough miles to burn a whole parmo!!

84 miles a week for cycling (12 miles a day)

31.4 miles a week for walking (4.5 miles a day)

Parmo information from Wikipedia