Waypoint navigation is a method of navigation that involves using a series of intermediate points or places on a route or line of travel, known as waypoints, to help define invisible routing paths for navigation. Waypoints can be sets of coordinates that identify a point in physical space, and the coordinates used can vary depending on the application. For terrestrial navigation, these coordinates can include longitude and latitude, while air navigation also includes altitude.

Waypoints can be used for location and navigation in various contexts, including driving, sailing, flying, and even fishing. In air navigation, waypoints may be defined as intersections between two VOR radials or NDB bearings, or in terms of specific distances and headings towards or away from a radio beacon. Waypoints can be a destination, a fix along a planned course used to make a journey, or simply a point of reference useful for navigation.

In order to use waypoints for navigation, they must be entered into a GPS receiver or other navigational system. It is important to be aware that many GPS receivers require latitude and longitude to be given in a very rigidly defined format, and some of the simplest GPS receivers require that you enter your waypoints in the correct order, but most units now allow you to pick, choose and rearrange your waypoints.

Overall, waypoint navigation is a useful method of navigation that can be used in a variety of contexts to help define routing paths and aid in location and navigation.