Kirchmann, who rode to a solo victory on Stage 2, moved to the front in the final seconds of the 54.7km circuit stage to finish in a time of 1 hour, 16 minutes, 4 seconds.
“I surprised myself with that sprint,” Kirchmann said. “I stayed on the leader’s wheel and passed her right at the line.”
She finished ahead of Hannah Barnes (Unitedhealthcare) and Erica Allar (Colavita/Bianchi-Fine Cooking) while Worrack finished fourth to claim the overall title by 5 seconds after picking up 13 seconds in the intermediate sprints.
“The team did such a good job in the intermediate sprints,” Worrack said. “There was no way someone could pass me.”
Lauren Komanski (Twenty 16-ShoAir), who began the final stage with a three second lead over Worrack, finished sixth to finish third overall.
1 Trixi Worrack (Ger) Velocio-SRAM 6hr 24min 16sec
2 Leah Kirchmann (Can) Optum-Kelly Benefit Strategies 0:00:05
3 Lauren Komanski (USA) Twenty 16-ShoAir 0:00:06
4 Katharine Hall (USA) Unitedhealthcare 0:00:16
5 Alena Amialiusik (Blr) Velocio-SRAM 0:00:26
6 Flavia Oliveira (Bra) Ale Cipollini 0:00:35
7 Alison Jackson (Can) Twenty 16-ShoAir 0:00:41
8 Lauren Stephens (USA) Team Tibco - SVB 0:00:42
9 Lex Albrecht (Can) Optum-Kelly Benefit Strategies 0:00:54
10 Andrea Dvorak (USA) Twenty 16-Sho-Air 0:01:03