The first practice session at Circuit Gilles Villeneuve was challenging due to a lack of grip, resulting in numerous spins and mistakes by drivers.
Charles Leclerc set an early pace but crashed out after 15 minutes, apologizing for a driver error that caused a red flag.
George Russell and Lando Norris also had incidents but avoided major damage, while Lewis Hamilton and others struggled with spins and mistakes.
Max Verstappen eventually topped the session, narrowly ahead of Alex Albon and Carlos Sainz, with Williams showing strong performance.
The session ended with Verstappen leading, followed by Albon and Sainz, setting the stage for upcoming practices and the Canadian Grand Prix.
