Alameda Creek Regional Trail follows the banks of Alameda Creek in southern Alameda County from the mouth of Niles Canyon (in the Niles District of Fremont) westward to San Francisco Bay – a distance of 12 miles. The trail on the south bank provides access to Coyote Hills Regional Park. An additional 3.5 mile loop trail making the run west from Niles Canyon along the trail, through Coyote Hills and back again, qualifies in distance for marathon runs. For those who want to clock shorter distances along the trail, markers have been installed at quarter mile intervals. The trail is accessible from several thoroughfares in the Fremont, Union City and Newark areas. Operated by the East Bay Regional Park District.