[3] The opening session of the weekend would be dominated by Emma Kimiläinen, setting the first representative time and never relinquishing the lead despite wet-dry conditions.
Elsewhere, Miki Koyama would suffer from technical issues while Sabré Cook would bring out the yellow flags with a spin into the gravel at Druids.
Visser would finish 8th, seven tenths behind Chadwick and directly behind Fabienne Wohlwend – who would bring out the red flag with a spin at Paddock Hill Bend.
Rdest and Wood had a turnaround of fortunes from the previous round, qualifying 13th and 14th respectively and under threat of losing their top 12 positions in the championship to third-placed Hawkey.
The race would soon get worse for the Japanese driver, with a spin on the entry to Sheene Curve prompting the deployment of the Safety Car.
With three laps remaining, Chadwick would run wide at Westfield, with Visser sneaking up the inside at Dingle Dell with two wheels on the grass.
13th place for Gosia Rdest dropped her outside the invite slots, and Keszthelyi finished as the best reserve driver in both the race and championship with 14th.
Holbrook beat Megan Gilkes in the battle of the backmarkers to 17th, Bovy's broken wing left her 19th and Koyama rounded out the field in 20th and two laps down.