May 6, 2018 – Avenue of the Giants Marathon January 30, 2018 It is that time of year again. The Avenue of the Giants Marathon is on May 6, 2018. Join us at the Giant Redwoods RV Camp, we are located six miles from the starting point. Book early to make sure you get a space. Tweet Pin It Related Posts Cool Review, User Experience The Avenue of the Giants Marathon! Lodging for Humboldt Redwoods Marathon!