Harju Airport
20WI has 1 runway. The longest is NW/SE at 1,800 ft × 40 ft (turf).
FAA NASR data, cycle 2026-09-03
20WI field elevation is 800 ft MSL. The standard traffic pattern altitude at 20WI is 1,800 ft MSL (1,000 ft AGL).
FAA NASR data, cycle 2026-09-03
Check 20WI against your personal minimums, plan a route to it, and see the best runway for the current wind — free.
No, 20WI is a non-towered airport.
20WI has 1 runway (NW/SE). The longest runway is 1,800 feet.
20WI uses the standard traffic pattern altitude of 1,000 feet AGL — about 1,800 feet MSL at a field elevation of 800 feet.
20WI (Harju Airport) has a field elevation of 800 feet MSL.
20WI (Harju Airport) is located in Redgranite, WI.