Henley Royal Regatta Posted on July 8, 2015July 8, 2015 by sophienadeau The largest unsponsored sporting event of its kind in the world, Henley Royal Regatta is an annual event. 51.535764 -0.902894 Henley-on-Thames, Henley-on-Thames, Oxfordshire RG9, UK Share this:TwitterFacebookPinterestTumblrLike Loading... Related