Harriet Pryke was in action in Oordegem in Belgium on Saturday evening at the International Flanders Athletics meeting.
The Martin Bullock-sponsored athlete ran the 400m B race and won in 54.81 against athletes from Belgium, France, the Netherlands and Ireland.
The IOM Sport Aid-recipient will be competing again this coming weekend in Birmingham at the England Senior Track and Field Championships, which this year also incorporates the North of England Championships.
More names added to Commonwealth Games squad
Swimmers Connor Mealin and Zack Bellhouse will join the team next month
New chair and CEO on FC Isle of Man board
David Pope and Russ Kent to take on the rolls
Organisation offering free football camps to struggling families
Let's Play inviting children to be part of sessions this summer
Tennis: Billy Harris confirmed for Wimbledon qualifiers
Former Island star to begin campaign next week
Triathlon: Read and Isaac take honours in Manx Middle Distance
Both take impressive wins during meeting in Ramsey