1. people who go on long, difficult journeys on foot, especially in mountainous areas

Examples

• The trekkers reached base camp after three days of hiking.
• Many trekkers visit Nepal to climb in the Himalayas.
• The experienced trekkers carried lightweight gear for the mountain expedition.
• Local guides helped the trekkers navigate the difficult terrain.
• The group of trekkers stopped to rest at the mountain lodge.
• Trekkers must be prepared for sudden weather changes at high altitudes.