Dogs are allowed in the Knickerbocker Canyon Trail Run, including all distances. There is a 5K, 10K, Half Marathon and 35K race. They all begin at the American River Canyon Overlook Park in Auburn, CA. Runners with dogs need to start in the back.
Tails 'n Trails is a dog friendly trail half marathon in Chalco Hills Recreation Area in Omaha, Nebraska. There is a half marathon, 10K, 5K and 1-mile walk to choose from. Top dog awards will be given to the first place female and first place male who are running with a dog.
The Dirty Dog Dare is a dog friendly trail race on a 3.5-mile loop with rolling hills. It is mostly double wide and goes around Wolf Lake. This is a canicross race but you are not required to run in canicross equipment.