The Finnish driver began in fourth for Ecurie W earlier than mastering the moist situations to maneuver by means of the sphere and take her first win since Assen 2019.
Chadwick completed in second for Veloce Racing, sustaining her championship lead, whereas Puma’s Marta Garcia got here in third to take her first podium of the yr.
Title challenger Alice Powell (Racing X) completed fourth, having began second, with Caitlin Wooden ending fifth in her second race of the yr for Puma.
The race, which was delayed by an hour, began underneath the protection automobile, the place it stayed for nearly the whole first half of the race, earlier than the drivers have been launched with 16 minutes plus one lap left to go.
Chadwick obtained a number of automobile lengths on Powell because the race began correctly, whereas additional again, Wooden, Kimilainen and Garcia went three vast alongside the Kemmel Straight.
Kimilainen moved into third in flip 9 as Wooden and Garcia continued to tussle, racing wheel-to-wheel.
Fabienne Wohlwend (Bunker Racing) went deep at La Supply, dropping the ultimate factors place to Sirin Racing’s Vicky Piria with 13 minutes to go.
Emma Kimilainen, 1st place, on the rostrum
Photograph by: Mark Sutton / Motorsport Images
Chadwick had constructed up a 2.8s lead from Powell after 18 minutes, with 1.3 seconds between Powell and Kimilainen.
With 11 minutes to go, Garcia set a brand new quickest lap with a 2m47.664s, whereas Powell discovered herself being caught by Kimilainen.
Kimilainen swept previous Powell with eight minutes to go, with the front-row starter, who mentioned she had “no grip in anyway”, pressured to concede.
Garcia quickly approached from fourth, making use of stress to Powell, whereas Kimilainen was three seconds a lap faster than Chadwick with 5 minutes to go, chasing down the race chief.
Kimilainen swept previous Chadwick on lap 9, making a late-braking transfer to squeeze across the outdoors and nearly instantly construct a 1.3s lead.
With 30s to go, Garcia took third from Powell, lining herself as much as take her podium of the season.
On the final lap, Wohlwend managed to cross W Sequence Academy driver Nerea Marti for seventh place.
W Sequence – Spa-Francorchamps race outcomes