[19][20] He took his first professional victory that September by winning the opening stage of the Tour of Britain, avoiding a crash inside the final 2 kilometres (1.2 miles) that delayed several sprinters.

[24] Rowe represented Wales at the Commonwealth Games for the second consecutive edition in 2014,[25] and finished sixth in the road race in Glasgow, won by teammate Geraint Thomas.

[27] Rowe enjoyed a strong start to the 2015 season with fourth place at the Cadel Evans Great Ocean Road Race and seventh overall at the Tour of Qatar.

[31] He was selected in Team Sky's squad for the Tour de France,[32][33] becoming the third Welsh rider to compete in the race after Colin Lewis and Thomas.

[34] Froome ultimately won the race for the second successive year, with Rowe predominantly marshalling the breakaway compositions at the front of the peloton, along with Stannard.

[45] The following month, Rowe fractured the tibia and fibula in his right leg, when he jumped into shallow water while whitewater rafting at his brother's stag party in Prague.

[58] Over the following three seasons, Rowe did not record any top-ten individual finishes, although he did feature in the breakaway at the 2021 Paris–Roubaix and 2022 Bretagne Classic Ouest-France races on the UCI World Tour.

[61] At the start of the 2024 season, Rowe featured in the breakaway on the final stage of Tirreno–Adriatico – on his 34th birthday[62] – but crashed out of the E3 Saxo Classic later in March, suffering a concussion in the process.

[19][68] Along with his former teammate Geraint Thomas, Rowe hosts a podcast, Watts Occurring,[67] and the pair have contributed to Eurosport's coverage of professional cycling.