Definition
Military Training Routes are airspace corridors developed jointly by the FAA and the Department of Defense to allow military aircraft to conduct low-altitude, high-speed training flights, generally below 10,000 feet MSL and often at airspeeds greater than 250 knots. They are charted as IFR routes (IR) when flown under instrument flight rules and visual routes (VR) when flown under visual flight rules, and are identified by route numbers such as IR-101 or VR-1207.
Plain English
Lanes in the sky where the military practices flying fast and low. They are marked on aeronautical charts so other pilots know where to expect this kind of traffic.
Context Anchor
Seen during preflight planning on visual-flight and instrument-flight charts, especially when checking a planned route for special traffic areas.
Why Pilots Care
Civilian pilots must know these routes exist because military aircraft may operate at high speeds and low altitudes, creating a midair collision risk.
Analogy
Think of it like a marked practice corridor in the sky. It is not a wall or a closed road, but it tells you where fast training traffic may be using the same airspace.
Intuition Check
Do not assume a Military Training Route is the same as a closed or restricted area. It marks where military training flights may occur, but the route may or may not be active when you fly near it.
Example Sentence 1
During preflight planning, she noticed her route crossed VR-1207 and called Flight Service to check whether the Military Training Route was active that afternoon.
Example Sentence 2
During the daytime leg, the flight crossed several Military Training Routes marked as VR-1204.