october, 2022 Humboldt Marathon (Avenue of the Giants) 09octalldayHumboldt Marathon (Avenue of the Giants)Volunteer VHF communicators needed Event DetailsHumboldt Marathon (Avenue of the Giants) 10-9-22. Contact Don Campbell KE6HEC, if interested in volunteering. Event Details Humboldt Marathon (Avenue of the Giants) 10-9-22. Contact Don Campbell KE6HEC, if interested in volunteering. TimeAll Day (Sunday) CalendarGoogleCal Leave a Reply Cancel replyYou must be logged in to post a comment.