What size is an international rugby union field?

Answer 1

IRB/NRL Regulations state that;

The length of the playing area will not exceed 100 metres from goal line to goal line with and In Goal area not exceeding 22 metres.

The width of the playing area will not exceed 70 metres from touch line to touch line.

Answer 2

100 metres long with a width of 75 metres (deadball is 10 metres deep and 75 wide behind each try line)

Answer 3

Same area as the normal Rugby field.

It's not a pitch, its a field.

100m long.