The IRB/NRL Specification is maximum 109.36 yds long goal line to goal line(100meters) by maximum 75.45yds wide touch line to touch line(70 meters)
The in goal area shall not be greater than 220 meters behind each set of posts
Whilst there are many graphics on the web you can also look at the IRB site and the dimensions are there
Rugby
rugby pitch
A Rugby Ground normally refers to the playing area, changing rooms and any associated ground area. The playing area is called a rugby pitch
Stadium or on a rugby pitch. The pitch will refer directly to the playing area
50 by 120 m's
69
Oblong
Rugby is played on a leveled grass field known as a pitch.
No. Rugby ball weight, dimensions and pressures are governed by the IRB (International Rugby Board). The regulation for this are on their site under the heading of Rules and Regulations
Dimensions of this nature are few and not recorded with any accuracy.
The Twickenham rugby pitch is 125m x 70m. The stadium has a capacity of 82,000 and has 150 executive suits.