I measured 1 km of running and 1 km of fast walking,so I run 1km @ 4min and 30 sec ..... & fast walk 1km @ 9min...basically if run 5km in 30 minutes I have to walk 1 hour to do the same distance /5km... Do i have to walk double the distance to burn the same amount of calories burned as running???
All things being equal (excluding differences in the biomechanical efficiency of walking vs running, yielding ground underfoot, gusts of wind, gravitational pull of the moon, etc), and not accounting for acceleration and deceleration which would be significant over short distances, the calories burned are the same. You've moved a mass from A to B. You've moved the mass faster and burned the calories faster by running.
Energy expenditure may not correlate to fat loss, void where prohibited, some conditions apply.