Whats the max speed of a aircraft during takeoff in miles (737-800)?

Landing gear max operating speed on the 737-800 is 320 kts... that is 368 mph... now, will it ever reach that speed on the ground... lets hope not... V2 for optimal condtions on the 737-800 (fully loaded) is 161 kts. or 185 mph... Landing speed would be far less than that even...