I seriously doubt it is the same amount of calories. For the same reason that riding a bike for 10 miles will burn fewer calories than walking it would. When you ride all of the work you do goes into lateral momentum and only air resistance and the resistance intrinsic to the bike mechanism. When you walk the mechanism makes you expend more energy for a given distance because your work is not as efficiently translated into horizontal motion. When you run you are using quite a lot of energy bouncing up and down moving your center of gravity vertically. The return fall is cushioned and absorbed by your legs but not well transferred into horizontal motion. The issue here is that differing movement mechanisms have differing efficiencies.