The Sierra Club leads hikes and other nature appreciation outings on
Oahu Island on Saturdays and Sundays. Hikes range from easy 1.5 mile itineraries to more strenuous 10 mile workouts. Most activities meet at 8am at the Church of the Crossroads.
There is a nominal hiking fee and a newsletter available for $2 that gives a schedule of up-coming hikes. Wear sturdy shoes and bring lunch and water for longer hikes.