Klamath Run | Riding Humboldt County Posted on April 20, 2020April 20, 2020 by Biker Calendar April 20, 2020 Riding Humboldt County Visits: 42Share this:FacebookXLike this:Like Loading... Posted in 04-April, Arcata CA, Bike Rides, Blue Lake CA, Humboldt County, Humboldt County CA, Riding Humboldt County and tagged April, Bike Rides, Humboldt, Humboldt County, Klamath, Riding Humboldt County, Willow Creek CA.