The 5K is the same course used in the past. It begins on Chartin Road next to Perigot Park. The start finish line is a blue arrow on the road. There should be instructions on the fence. Start from the blue arrow and run east. Turn left at the second stop sign on Gely St. Turn right at the next stop sign on Railroad Ave. and run down Hatchery Road. Take the trail to the right (should be a sign). Follow the trail to Taylor Rd, which needs to be crossed. There is a trail (should be a sign) on the other side. Take a left at the levee and follow it back to Hatchery Road. Go left on Hatchery Rd until you reach the turnoff to the trail you just ran. (there should be a sign). Run the loop a second time. After the second loop, return to the start/finish the same way you started.
Follow the same instructions for the 5K, but turn right on Hatchery Rd after running the levee. Run all the way to the turnoff to the hatchery where there are signs stopping entry to the hatchery. There should be a turn around sign for the 10K. Run back to Mad River and take the levee to the right after crossing the river (should be a sign). Follow the levee to the gate (or the turn around sign). Take a right on Hatchery Rd and follow the road past the turnoff to the trail and back on the same route to the start/finish line.