Waht is the highest level of mixed curling competition outside of the world championships or Olympics ?
Curling at the Winter Olympics World Curling Championships World Junior Curling Championships World Senior Curling Championships World Mixed Doubles Curling Championship European Curling Championships Continental Cup of Curling Tim Hortons Brier Scotties Tournament of Hearts United States Men 's Curling Championship United States Women 's Curling Championship Canada Cup European Mixed Curling Championships