Enroute Map Practice Test

Distances on enroute charts are shown for each leg between fixes, so you read the number labeled on the segment that connects the two points. The leg between IGB and GLH is labeled 124 miles, which is why that pair matches the given distance. The other legs have different distances, so they don’t correspond to 124 miles. This is how you quickly verify distances for fuel planning and timing while flying an airway.