What is playing area in Biathlon?

Section 3: Playing Area

Distance: 50 m (164 ft) ± 1 m from the firing line to the targets (Rule 3.4.2.1).
Lanes: The range must have 30 shooting lanes at all IBU competitions (Rule 3.4.4.1). Each lane must be at least 2.75 m but not more than 3 m wide (Rule 3.4.3.1).
Prone targets: 5 circular metal plates, each 45 mm (1.77 in) in diameter. The target falls (closes) when hit, providing immediate visual feedback.
Standing targets: 5 circular metal plates, each 115 mm (4.53 in) in diameter. Larger targets compensate for the inherent instability of standing shooting after intense physical exertion.
Electronic target system: Only metal and fully electronic targets may be used for competition; at OWG, WCH, WC and other televised events, targets must have remote reset and electronic target scoring data (Rule 3.4.4.1).
Wind indicators: Wind flags must be installed beside every second shooting lane, 20 m from the target (Rule 3.4.6). There is no wind compensation in scoring — athletes must adjust their aim based on real-time conditions.

Sprint course: 3 loops of 3.3 km (men) or 2.5 km (women) (Rule 1.4.10.4), with the course passing through the stadium and shooting range area between loops.
Individual course: 5 loops of 4 km (men) or 3 km (women) (Rule 1.4.10.4), with 4 passes through the shooting range.
Terrain profile: The maximum height difference on the course is 80 m, the maximum single climb is 50 m and no climb may exceed a 25 percent grade (Rule 1.4.10.1, Rule 1.4.10.2, Rule 1.4.10.3).
Course width: At least 6 m of groomed snow surface; unavoidable narrow sections may not be less than 4 m wide for not longer than 50 m (Rule 3.3.2).

Penalty loop: 150 m (± 5 m) oval, 5–6 m wide, no further than 60 m skiing distance from the range (Rule 3.3.11). Athletes ski one loop for each missed target immediately after the shooting bout (in Sprint, Pursuit, Mass Start, and Relay events) (Rule 7.1.5). Completing one loop typically adds roughly 20–25 seconds to the athlete's total time.
Stadium layout: Located in the stadium area are the start/finish areas, shooting range, penalty loop, relay hand-over zone and spectator areas (Rule 3.1).
Altitude: No part of the course may be higher than 2,000 m above sea level unless an exception is authorized by the IBU Executive Board (Rule 3.3.2).

Distance: 50 m (164 ft) ± 1 m from the firing line to the targets (Rule 3.4.2.1).
Lanes: The range must have 30 shooting lanes at all IBU competitions (Rule 3.4.4.1). Each lane must be at least 2.75 m but not more than 3 m wide (Rule 3.4.3.1).
Prone targets: 5 circular metal plates, each 45 mm (1.77 in) in diameter. The target falls (closes) when hit, providing immediate visual feedback.
Standing targets: 5 circular metal plates, each 115 mm (4.53 in) in diameter. Larger targets compensate for the inherent instability of standing shooting after intense physical exertion.
Electronic target system: Only metal and fully electronic targets may be used for competition; at OWG, WCH, WC and other televised events, targets must have remote reset and electronic target scoring data (Rule 3.4.4.1).
Wind indicators: Wind flags must be installed beside every second shooting lane, 20 m from the target (Rule 3.4.6). There is no wind compensation in scoring — athletes must adjust their aim based on real-time conditions.

Sprint course: 3 loops of 3.3 km (men) or 2.5 km (women) (Rule 1.4.10.4), with the course passing through the stadium and shooting range area between loops.
Individual course: 5 loops of 4 km (men) or 3 km (women) (Rule 1.4.10.4), with 4 passes through the shooting range.
Terrain profile: The maximum height difference on the course is 80 m, the maximum single climb is 50 m and no climb may exceed a 25 percent grade (Rule 1.4.10.1, Rule 1.4.10.2, Rule 1.4.10.3).
Course width: At least 6 m of groomed snow surface; unavoidable narrow sections may not be less than 4 m wide for not longer than 50 m (Rule 3.3.2).

Penalty loop: 150 m (± 5 m) oval, 5–6 m wide, no further than 60 m skiing distance from the range (Rule 3.3.11). Athletes ski one loop for each missed target immediately after the shooting bout (in Sprint, Pursuit, Mass Start, and Relay events) (Rule 7.1.5). Completing one loop typically adds roughly 20–25 seconds to the athlete's total time.
Stadium layout: Located in the stadium area are the start/finish areas, shooting range, penalty loop, relay hand-over zone and spectator areas (Rule 3.1).
Altitude: No part of the course may be higher than 2,000 m above sea level unless an exception is authorized by the IBU Executive Board (Rule 3.3.2).