When flying VFR, what cruising altitude should you use if your track is heading north?

When flying VFR (Visual Flight Rules), the cruising altitude for a flight heading north is determined by the hemispherical rule. According to this rule, aircraft flying on a magnetic course of 0° to 179° should use odd thousands of feet, plus 500 feet. This practice helps to maintain vertical separation between aircraft traveling in opposite directions.

The reasoning behind this is primarily for safety and efficiency in air traffic management. When aircraft are flying at different altitudes, it reduces the risk of mid-air collisions and allows for a more organized flow of air traffic. For example, if your flight is at an odd thousand plus 500 feet, such as 3,500 or 5,500 feet, it increases the likelihood that other aircraft flying in the opposite direction (southbound) will be at even thousand plus 500 feet, such as 4,500 or 6,500 feet, providing clear vertical separation.

Overall, using an odd thousand plus 500 feet for northbound flights is a standard practice that aligns with VFR regulations and ensures safe cruising altitude choices.