Should you start the 4x400 relay full speed?

Answer 1

the best order should be fastest 400 time 1st then 2nd slowest then slowest 3rd then finally anchor which should be the 2nd fastest.

sometimes however, you can switch the 1st with the last.

Answer 2

You should run the first 50 meters at full speed, then run a strong stride until the last 100 meters. Sprint the last 100meters.