Forest trails are beautiful in late October and early November. There are trails way up north in Prairie Creek State Park, a little less north in Patrick's Point State Park, along the CA coast on the beaches and south to Humboldt Redwoods. An outing and picnic would add fun to a run.
TK-2 runners should run one mile.
The Eureka Waterfront Trail, the Hikshari Trail in Eureka, the Hammond Trail in McKinleyville, and the Marsh Trails in Arcata are terrific places to get a good time.
The 3-5 runners should run 1 1/2 miles.
There are many great local parks for running. Sequoia Park and Headwaters Forest in Eureka, Arcata Community Forest and Arcata Marsh, Rohner Park in Fortuna and all the beach parks along the coast are great running locations.
The 6-8 grade runners should run 2 miles.