Super League leaders Hull FC will host Castleford on 5 August in the first round of fixtures in the Super 8s.
St Helens travel to Warrington in the first game the previous day, while Wigan are at home to Wakefield and Widnes are in France against Catalans.
Meanwhile, Super League holders Leeds start the Qualifiers at Championship club Featherstone Rovers on 6 August.
Leigh, who retained the Championship title for a third successive year, host London Broncos on 6 August.
Salford have a home game against Huddersfield Giants, while Batley Bulldogs start at Hull KR.
Each team plays seven games in the second phase of the season.
In the top tier, points from the regular season are carried over and the top four sides in the Super League table will progress to the play-off semi-finals for a chance to reach the Grand Final in October.
In the Qualifiers, the leading three teams will automatically earn a place in next season's Super League, with the fourth and fifth placed clubs playing in the Million Pound Game for the last remaining spot in the top flight.
Subscribe to the BBC Sport newsletter to get our pick of news, features and video sent to your inbox.