Enroute Map Practice Test 2026 – Complete Exam Prep

Diamond mileage on enroute charts shows how far you are along an airway and which VORTAC/fix you’re measuring toward. For the V245 segment associated with the JAN approach, the mileage diamond indicates you’re 26 nautical miles from the MHZ VORTAC, located to the southwest of your position on that leg. That SW relation and the 26 NM value are what tie this segment to MHZ.

The other options would imply different distances or a different VORTAC (SQS) that isn’t the end of this V245 JAN leg, so they don’t match the symbol shown for this route segment.