Trail Running Calendar Hawaii 2025-2026

Hilloween in Koloa is a costume friendly trail event with a hilly 5K, obstacles and a short keiki trick or treat run. Register on site or virtually, pets welcome for a pet costume contest and proceeds benefit the Kauai Ballet Academy.

Run from Hilo to Volcano along a scenic 31 mile route with volcanic views and about 4,000 feet of climb, solo or with relay teams. This self supported challenge finishes with food, drinks and medals at the Cooper Center.