First, understand that your high probability risk occurs on the dog's home turf. Darned few will attack outside that ring. [There're accounts about pit-bulls and their spawn tearing the neighbor's face off down the street. . .dunno' what that's about and 'fraid I can't help you there.]

Escalation:

1. Keep your ears open for that tell-tale jungle of a dog's tags accelerating on an intercept and down-shift and bolt out of there. Old timers get quite adept at this. Remember that Bingo isn't likely to go past his perceived turf. You gotta' be alert for this to help, no mind wandering.

2. As huhenio says, give 'em the voice. . ."Go Home", "No", or my favorite "I ***** Bigger'n You". It's gotta' be at a deep and powerful tembre like you mean business. Limit eye contact, but make sure your body language doesn't telegraph fear. 99% of your problem is solved with 1 and 2.

3. For repeat offenders 'cause you gotta' set this one up; household ammonia in a water bottle. [See, pepper spray takes some moments to react with the mucous membranes plus a dog [or a human] can get so aggressive it's overcome.] Ammonia on the other hand poses a fundamental choice. . .continued aggression or continued breathing. . .taps into brain stem issues, Maslow's Hierarchy if you like.

4. OK, you can go on the attack!!! We've taught these d@mned dogs [and their so-called masters] that there's no penalty for chasing us. Chase 'em back! I series of rebel yells is a nice touch if you know how.

BTW, don't pick a fight with Bingo's owner. He's probably got deadly force just out of sight.

My credentials? The canine relationship implicit in my "handle" should say it all. "On the Internet, nobody knows you're a coyote!"