article:  Orders of magnitude (speed) Speedm/sft/skm/hmphNotesApproximate rate of  continental drift 0.000000010.000000030.000000040.000000024 cm/year. Varies depending on locationSpeed of a common  snail 0.0010.0030.0040.0021 millimeter per second.A brisk  walk 1.75.56.13.8(5.5 feet per second)A typical road cyclist4.414.41610Varies wildly by person, terrain, bicycle, effort, weather. Sprint runners 1032.83622Average speed over 100 meters.Approximate average speed of road