Dallas/Maxim App Notes from the link above -
http://www.maxim-ic.com/appnotes.cfm/appnote_number/148
One Wire Network info, setup and things that you need to know.
A. 200 meters using a resistor pullup,
up to 500+ meters using active pullups (MOSFETs etc), if you are lucky
and the wind is blowing in a favourable direction on that particular day.
(NOTE: All bets are off if you have a 50KW RF or Telco tower within 250m of your house)
1 Meter = 1.09361329833771 Yards for those in less advanced societies
1 Meter = 0.422720017314612 Czech latre.
Read the App notes and followup links and all will become clear.