She eyed the windsurfer sails on the lake, wondering if she would have time for an impromptu race before her tennis date.

The electric shot around a curve in the road, winner of the impromptu race by an eighth of a mile.

Tom did not want to decline the invitation, and the impromptu race was under way.

They were all extremely skilled racers as a result of impromptu races between pilots to ships in need of pilot services.

I watched them pedal away in an impromptu race, and thought: I would.

He began an impromptu race; the team could did not catch him, even though Agostinho was riding a standard steel bicycle.

Any time two falcons get together, there's almost always an impromptu race, which does sort of interrupt things during the mating season.

Silverstone was first used for motorsport by an ad hoc group of friends who set up an impromptu race in September 1947.

The impromptu race tired me, but it seemed to tire her, too.

The project came to a disastrous end when the car was rear-ended in an impromptu race and turned over, killing the driver.