Road races need their own signal
A dog-friendly 5K, dog jog, dog walk, pup strut, or downtown road race is useful, but it should not be mixed into trail-race results unless the source actually describes a trail route. This page is for road-style events where public source text ties dogs to participation in the event itself.
The useful proof is direct: dogs can run or walk the course, the race has a dog-friendly 5K, a Doggie Dash exists as part of the event, or the rules describe handlers participating with dogs. Charity branding or a pet-friendly festival area is not enough by itself.