A woman is in hospital with critical injuries after an incident at a Millarville equestrian sports venue on Saturday.

STARS air ambulance landed on the field of the venue shortly after noon.

Crews picked up and transported a woman who had sustained life-threatening injuries. She was transported to Foothills Hospital in critical condition.

EMS did not specify the nature of the injury or how it might have occurred.

Millarville is a hamlet approximately 35 kilometres southwest of Calgary.