Hikeathons are popular events that raise money for charity.

The trail in this national park is hikeable.

The thru-hiker completed the entire Appalachian Trail in six months.

Thru-hikers often complete long-distance trails in one continuous journey.

The through-hiker completed the entire Appalachian Trail in six months.

Through-hikers spend months hiking the entire Appalachian Trail.

He developed a hiker's rash after a long hike in the mountains.