Definition
Routes used by military aircraft to conduct low-altitude, high-speed training flights operated under Visual Flight Rules. Identified on aeronautical charts with the prefix VR followed by a route number (for example, VR1207). Pilots flying these routes are responsible for seeing and avoiding other traffic and remain clear of clouds in accordance with VFR cloud-clearance and visibility requirements.
Plain English
Charted corridors where military aircraft fly fast and low for training, while still using their eyes (rather than instruments) to stay clear of other airplanes and clouds.
Context Anchor
Seen during preflight planning on VFR charts and when checking route activity before flying across or near a military training route.
Derivation
VFR stands for Visual Flight Rules — flying primarily by looking outside rather than by instruments. The route is 'military' because it is reserved for military training, and 'training' because crews use it to practice low-level navigation and tactics.
Why Pilots Care
Civilian pilots must know these routes to avoid conflicts with fast military traffic operating at low altitudes.
Intuition Check
Do not read “VFR” here as meaning “a route for ordinary VFR pilots.” It means military aircraft using the route are operating by visual flight rules, and they may still be fast and low.
Example Sentence 1
While planning the cross-country, she noticed her route crossed VR1755 and called Flight Service to check whether the military training route was active that morning.
Example Sentence 2
Controllers advised traffic of active VFR Military Training Routes in the area.