Signed in 1840, the Treaty of Waitangi is an agreement between the British Crown and Maori. Around this time, there were 125,000 Maori and about 2000 settlers in New Zealand. Sealers and whalers were the first Europeans settlers, followed by missionaries.
Their male subjects burned 105 calories running, 52 walking; the women, 91 and 43. That is, running burns twice as many net calories per mile as walking. And since you can run two miles in the time it takes to walk one mile, running burns four times as many net calories per hour as walking.
The exact nature of your treadmill workout dictates how quickly you'll burn calories. Walking, for example, burns calories at a significantly slower rate than running. HealthStatus notes a 200-pound person burns 198 calories in 30 minutes of walking at 3 mph and 234 calories in 30 minutes of walking at 4 mph. If you can maintain a jogging pace, expect to burn more calories.