I would calculate this for you but I don't know your weight. If you go to this calculator then you can figure it out very easily. By the way you convert from kilometers to miles by multiplying kilometers by .62
No, running will burn far more calories.
Around 450 calories
100
250
100
Depends on how long you do it for.
Both running and walking burn about 100 calories per mile
about 550 to 600 calories if ran on a treadmill at speed 10
Under these conditions running for 40 minutes burns 40 x 14 = 560 calories
about 123
100-150
Less than 22