1. an organized walking event, typically held to raise money for charity

Examples

• The school organized a walkathon to raise funds for new playground equipment.
• She participated in a 10-mile walkathon for cancer research.
• The annual walkathon attracted over 500 participants from the community.
• Sponsors pledged money for each mile completed during the walkathon.
• The charity walkathon raised $15,000 for the local food bank.
• Volunteers handed out water bottles to participants during the walkathon.