@CAROKNITS: Please, don't get be back on my soapbox about how remarkably inaccurate the SP calorie counting actually is. You are absolutely correct: It's accuracy is off by MILES. Accurate calorie counting should be done based on heart rate level. Just blindly punching in distance and time will always generate inaccurate data.
If I ride a Metric (100km), I generally burn around 2,500 calories. I've confirmed this figure is correct by the heart rate based calorie counter of my Garmin 500, and then cross-confirmed it when I upgraded to my (current) Garmin 800. Both showed the same approximate values. To further check their accuracy, I checked against a (web-based) calorie counter calculator that I have which backed these numbers up to within 100-200 calories. So, in essence, three different calculators have reported the same figures. However, when I punch in those same figures - miles, distance and time - to the SP counter, I've burned well in excess of 4,000 calories - that's almost 60% more than what I've actually burned. With those types of inaccurate values, losing weight via cycling is almost impossible if solely using Sparks calculator(s).
By no means am I unappreciative of Spark, it's features or the fact that it's truly 100% free, but if their laudable goal is the improved health and fitness of their members, they need tools that more accurately reflect consistent and reliable values. My web-based calorie calculator is something that Spark could EASILY incorporate into their site but I doubt they would ever do so.
If you're interested, PM me with your personal e-Mail address (since you can't include attachments in SparkMail) and I'll gladly send you the application with installation\usage instructions.
| current weight: 210.4