When I’m running along my neighborhood sidewalks, I’ll sometimes be approaching someone from behind who is taking up a great deal of the available space. My calls of “excuse me!” are often ignored, or at least not reacted to swiftly enough to let me past without slowing down.
A while back I realized that there’s a gut reaction to the sound of footsteps approaching from behind: a quick head spin to see who/what is attacking. So I play on that and let my heel drag on the pavement, making that distinctive ‘chuff’ sound. Assuming they don’t have their headphones set to 11, they’ll immediately react, see me approaching, and step aside.
I can then smile and thank them as I fly past.