15 km
The Ref
On average, 10+ kilometres
right breakaway is not a rugby terminology sorry - Can you clarify what your asking please?
The average player will sprint around 4 miles per 90 minute match on their cuts (offensive running pattern) and run a further few miles also. It varies for handlers and cutters. Handlers will sprint far less on offense however it depends on who they mark in defense how far they will run. Hope that helps.
Centre's can run everywhere apart from in the shooting circle
You can only really judge this by the person that wins the IRB Player of the year award as its voted for by those who run the game and is not an oppinion which of course we all have - For the second year New Zealand captain Richie McCaw has been named the International Rugby Board Player of the Year 2010.
If they play a full match they would probably be running for about 70 minutes out of the 90. A goalkeeper would be far far less.
Grab a ball and run.
there are no loose forwards in rugby league
It is a multiplayer game. In an online match up to 16 people can participate.
The average rugby union forward runs 4 - 5 miles per game with backs running 6 - 7 miles per game