Back in February, we shared a list of America's ten fittest cities as compiled by Sharecare.com -- a roster on which Denver finished first. Now, however, the American Fitness Institute has issued rankings of its own, and while Denver finishes high, it's definitely not number one. Is Denver slipping down the fitness scale? Or is this an example of how results can differ from one study to the next? After all, three cities cited by AFI weren't even mentioned by Sharecare.com, including the top two.

Count down the former's photo-illustrated top ten below, featuring AFI data and list comparisons -- and click here to see the complete (and massive) American Fitness Institute report.

Number 10: Sacramento Total score: 66.9Sharecare.com fitness ranking: Number 5 Number 9: Boston Total score: 69.1Sharecare.com fitness ranking: Number 4 Continue to keep counting down the American Fitness Institute's list of the ten fittest cities. Number 8: San Diego Total score: 69.2Sharecare.com fitness ranking: Number 3 Number 7: Seattle Total score: 69.3Sharecare.com fitness ranking: Number 6 Continue to keep counting down the American Fitness Institute's list of the ten fittest cities. Number 6: San Jose, California Total score: 69.4Sharecare.com fitness ranking: Outside the top ten Number 5: San Francisco Total score: 71.0Sharecare.com fitness ranking: Number 2 Continue to keep counting down the American Fitness Institute's list of the ten fittest cities. Number 4: Denver Total score: 71.7Sharecare.com fitness ranking: Number 1 Number 3: Portland, Oregon Sharecare.com fitness ranking: Number 7 Continue to keep counting down the American Fitness Institute's list of the ten fittest cities. Number 2: Minneapolis Total score: 73.5Sharecare.com fitness ranking: Outside the top ten Number 1: Washington, D.C. Total score: 77.3Sharecare.com fitness ranking: Outside the top ten

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More from our Things to Do archive circa February 5: "Photos: America's ten fittest cities -- and where Denver finishes."

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