It would take about 20 hours to walk 100 kilometers, and an hour if you're driving at 60 mph.
100 km is about 62 miles.
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200 km
100 km * 3.78541178 L/gal ÷ 1.609344 km/mi ÷ 17.2 mpg = 13.7 L per 100 km.
100 km and 75 km are displacements, NOT velocities. The resultant displacement is 25 km north,
2.41402 km
1 km = 100 dkm.