Glossary O

Articles containing information regarding Glossary O

• Off-trail travel

  Off-trail travel refers to moving across terrain without following an established trail or maintained route. It requires strong navigation skills, terrain assessment, and awareness of environmental impact.

• On-trail corridor

  The on-trail corridor is the area immediately surrounding an established trail where movement, camping, and navigation remain tied to the maintained route. It provides predictable travel conditions and reliable signage.

• On-trail water source

  An on-trail water source is a stream, spring, creek, lake, pipe, or cache accessible directly from the established trail corridor without requiring off-trail travel.

• Open desert section

  An open desert section is a stretch of trail that traverses arid, exposed landscapes with minimal shade, limited water, and high sun exposure. It often requires careful planning for hydration and heat management.

• Out-and-back route

  An out-and-back route is a hike where the same trail is used to travel to a destination and then return to the starting point. It does not form a loop or require alternate exit points.

• Overnight test hike

  An overnight test hike is a short trip designed to test gear, fitness, packing systems, and trail routines before attempting a longer journey such as a thru-hike.

• Overuse injury

  An overuse injury is a physical injury caused by repetitive strain on muscles, tendons, or joints over time. It is common during long-distance hiking due to sustained daily mileage.

• Ozone / UV index (sun exposure planning)

  Ozone levels and the UV index measure the intensity of ultraviolet radiation reaching the Earth's surface. These values help hikers plan for sun exposure, particularly in high-elevation or low-ozone regions.