Narita International Airport is a major international airport serving the Tokyo metropolitan region and Japan's principal long-haul aviation gateway, with passenger, cargo, runway, and intermodal infrastructure. The operator identifies Runway A as 4,000 × 60 m; the runway-length field refers to Runway A. Its facilities page distinguishes the present 2,500 m length of Runway B from the 3,500 m length in the total development plan, which also includes Runway C. Planned dimensions should not be treated as the current runway inventory. Source: Narita International Airport Corporation main facilities, https://www.narita-airport.jp/en/company/airport-operation/about-layout/ (accessed 17 October 2026; no effective date stated on that page).