Rebecca Clarke of New Zealand led the pro women’s wave with a 53:10 swim split that gave her a 2:02 lead on Fern Davies of Great Britain, 4:49 on Manon Genet of France, and 5:19 on Simon Mitchell of Great Britain. After 126 kilometers of the bike leg, Mitchell took a 1:46 lead on Genet, 4:17 on Laura Siddall of Great Britain, and 9:52 on defending champion and recently retired as full-time pro Lucy Gossage of Great Britain. After a women’s-best 5:25:21 bike split, Mitchell arrived in T2 with just under a minute lead over Genet (5:26:44 bike split), a great deal further behind was Siddall, and Gossage was 4th, 14:39 arrears. Halfway through the marathon, Genet took the lead by 1:29 over Mitchell, with Siddal and Gossage 14 and 21 minutes behind. At 35km into the run, Mitchell retook the lead from Genet. At the 39 kilometer mark, Mitchell sailed to a 9 minutes lead on Genet.
After a women’s-best 3:10:46 marathon, Mitchell finished in a new course record time of 9:41:52 with a 10:36 margin of victory over Genet and 17:44 over 3rd place finisher Laura Siddall of Great Britain.