Full-back Ian Hardman touched down twice and Rovers scored other tries through Greg Worthington, Matt James, Kyle Briggs, Tom Saxton and Liam Finn, who also kicked six goals and a drop goal, to stay top of the table.
Substitute David Houghton scored a try in each half for Whitehaven, whose other try came from Lee Doran.
Dewsbury are just two points behind the leaders after gaining a 23-18 win at lowly Swinton.
Former St Helens forward Scott Hale scored two of the Rams' five tries while James Mendeika, Brad Dwyer and Martin Ainscough went over for the Lions.
Half-back Ryan Brierley grabbed a hat-trick in Leigh's 46-16 victory at Keighley which keeps the Centurions in touch with the early pacesetters.
Matt Gardner, Tommy Goulden, Carl Briscoe, Steve Maden and John Duffy got the Centurions' other tries while wingmen Richie Barnett and Paul White scored the Cougars' touchdowns.
Leeds duo Jimmy Keinhorst and Liam Hood both scored two tries playing for partner club Hunslet in a 42-22 win over Doncaster at the South Leeds Stadium. Kyle Kesik, Brett Waller, Mark Castle and Carl Hughes were Doncaster's tryscorers.
Barrow remain rooted to the foot of the table after going down 38-10 to Workington at Derwent Park.
Former England winger Mark Calderwood was among the tryscorers for Town while Liam Harrison and Adam Clay scored the first-half tries that enabled Barrow to twice take the lead.