A crisp and clear morning meant near-perfect racing conditions on the 8km loop event hosted by Tavistock Wheelers.
The course would be completed just short of nine times, 72km in total.
Brentor is an attritional race, with little in the parcours to really split the bunch, and the 3k drag up over the finish line each time is crucial.
Cartlidge made some early attacks to try and whittle down the 74 entries, but could only gain small time gaps and inevitably the race came down to the final drag to the line.
The Plymouth Corinthians man positioned himself perfectly right from the bottom corner of the circuit, and having previously finished well on this course, knew when to launch his sprint.
He did leave it very late, kicking 150m from the line, but it was enough to claim victory.
Bikechain’s Ross Holland was second, Team Novo Nordisk’s junior Alfie Peters was third and Tavistock Wheelers’ Phil Collings fourth.
Fellow Corinthian riders Will Horn, Mike Rogers and Rob Cartlidge all rode strongly to finish in the peloton.
Full results can be found HERE.