The half marathon course is flat, scenic, and largely off-road, perfect for a personal record. Almost half the course is next to the water or wildlife refuge. Beginning and ending at 750 Bradford Street in downtown Redwood City, the out and back course circles the saltwater marina at One Marina, joins the Bay Trail next to Bair Island in the San Francisco Bay National Wildlife Refuge, and continues to a beautiful gravel and dirt trail next to Steinberger Slough in Redwood Shores.
Course is now USA Track & Field certified. The certification program is very important to the average road racer, as well as those of exceptional speed. Most runners like to compare performances run on different courses, and such comparisons are difficult if course distances are not reliable.
The 5K follows the same course but turns around near the One Marina community next to Redwood Creek.