In biathlon, what is the target range shooting distance?

The biathlon is a winter sport that combines cross-country skiing and rifle shooting. It is treated as a race, with contestants skiing through a cross-country trail whose distance is divided into shooting rounds. The shooting rounds are not timed per se, but depending on the competition missed shots result in extra distance or time being added to the contestant's total.

The target range shooting distance is 50 m. There are five circular shooting targets to be hit in each shooting round. When shooting in the prone position, the target diameter is 45 mm; when shooting in the standing position, the target diameter is 115 mm. This translates to angular target sizes of about 1 and 2.5 mrad respectively. On all modern biathlon ranges, the targets are self-indicting, in that they flip from black to white when hit, giving the biathlete, as well as the spectators, instant visual feedback for each shot fired.