Amtgard

Taken from their webpage;

Amtgard is a non-profit, non-sectarian group devoted to recreating elements of the medieval, ancient, and fantasy genres. The thrust of Amtgard is both recreational and educational, with major group efforts devoted to reconstructions of medieval combat. Amtgard weapons are safe, foam-padded replicas of the real things. Anyone age 14 or greater may join (those under 14 years of age require parental and Monarch approval to partake).

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(Amtgard differs from Belegarth with their use of lighter funnoodle weapons, faster fighting styles, no shield bashing, and role-playing battle games.)