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 Training & Nutrition Learn how to develop a training schedule that's good for you. What should you eat and drink on your ride? Learn everything you need to know about training and nutrition here.

 07-09-11, 12:46 PM #1 Cmd17 Junior Member Thread Starter   Join Date: Jul 2011 Location: Happy Valley, Pennsylvania Bikes: Posts: 14 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) Biking equations Okay so today I went for an 18 mile bike ride, and I clocked myself at about 4 minute miles. I was wondering if there is some sort of equation to figure out how many calories burned during your workout.
 07-09-11, 03:34 PM #2 chinarider Dan J     Join Date: Jul 2006 Location: Iron Mountain, MI Bikes: 1974 Stella 10 speed, 2006 Trek Pilot 1.2 Posts: 1,244 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 18 Post(s) Figure (very) roughly 25-40 calories a mile. Speed is less important than other factors, such as rider & bike weight, hills and wind. If you do a google search, I think you'll find some calculators. Not sure how accurate they are.
 07-09-11, 04:28 PM #3 gregf83  Senior Member   Join Date: Jun 2008 Location: Vancouver, BC Bikes: Posts: 8,037 Mentioned: 3 Post(s) Tagged: 0 Thread(s) Quoted: 486 Post(s) If you're not doing any big climbs I would estimate under 30 Cals/Mile for 15mph speed.
 07-10-11, 02:44 AM #4 Machka  In Real Life     Join Date: Jan 2003 Location: Down under down under Bikes: Lots Posts: 48,748 Mentioned: 55 Post(s) Tagged: 0 Thread(s) Quoted: 1513 Post(s) Approx 500-600 calories per hour.
 07-10-11, 12:29 PM #5 veloboy971 Must Go Faster     Join Date: May 2009 Location: Stopped at the bakery Bikes: Trek Madone 5.9, BMC Road Racer SL01, Orbea Aletta TT Posts: 972 Mentioned: 0 Post(s) Tagged: 0 Thread(s) Quoted: 0 Post(s) how fast do you ride and how much do you weigh? I would say unless you are riding upwards of 19mph (which is around 200 watts) for most normal weight people, 30/mile is a larger over estimate. I'd say go more around 20-23/mile especially if you are trying to lose weight.
07-10-11, 03:15 PM   #6
gregf83
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Quote:
 Originally Posted by veloboy971 how fast do you ride and how much do you weigh? I would say unless you are riding upwards of 19mph (which is around 200 watts) for most normal weight people, 30/mile is a larger over estimate. I'd say go more around 20-23/mile especially if you are trying to lose weight.
19MPH and 200W is about 38 Cals/mile. 20 Cals/mile and 15MPH would require only 83W. I think if you just lift your legs and let them fall on the pedals you generate around 150W.

I weigh 165 and the lowest Cals/mile I've recorded is 29/mile @ 143W and 17MPH for a mostly flat recovery ride.