Route Details


The Tour of the Unknown Coast is sponsored in part by these fine Humboldt County businesses

Supporting Shops

Adventure’s Edge
650 10 Th. St. Arcata, CA. 95521
(707) 822-4673

125 W. 5th St. Eureka, CA 95501
(707) 445-1711

Revolution Bicycles
1360 G St. Arcata, CA 95521
(707) 822-2562

2811 F St. Eureka, CA. 95501
(707) 443-9861

Sport & Cycle
475 N Fortuna Blvd, Fortuna, CA 95540
(707) 725-9405

1621 Broadway St, Eureka, CA 95501
(707) 444-9274

50 Mile

This beautiful ride travels through the Eel River Valley to Rio Dell, down Hwy. 101 S and on to the Avenue of the Giants and a rest stop/turnaround at the Immortal Tree. Then head back to Ferndale.

Route Slip

  • Start/Finish Humboldt County Fairgrounds, Ferndale. Head west on 5th St. three blocks to Ocean Ave., turn left and head south out of town.
  • Mile 3.7 Waddington Rd. continue on through the Ferndale Bottoms toward Rio Dell on Grizzly Bluff Rd.
  • Mile 5.4 Grizzly Bluff School intersection, turn right to Rio Dell
  • Mile 8.3 Continue on toward Rio Dell.
  • Mile 13.1 Intersection –STOP SIGN!!!— Watch traffic control officer / CHP / RIO DELL CHECK-POINT / AID STATION. Turn right onto Wildwood Ave., go through Rio Dell, cross the historic Scotia Bridge.
  • Mile 14.4 Continue through Scotia, the road turns to the left as you pass the lumber mill offices and the old locomotive. Continue on to Highway 101.
  • Mile 15.9 Enter Highway 101 southbound. SINGLE FILE PLEASE
  • Mile 21.7 Take Pepperwood exit from 101 south. Turn left at STOP SIGN and enter Avenue of the Giants south. Continue on next 8.2 miles.
  • Mile 25 REST STOP / AID STATION at IMMORTAL TREE GIFT SHOP. 50 mile riders turnaround here. 100 K and 100 mile riders continue on.

100 K, 50 mile, and 20 mile maps