To be honest, slipping a mask on (or pulling up a neck gaiter) when approaching people on the trail (especially if they're wearing masks), I just see it as a polite gesture even if I'm skeptical it makes the slightest bit of difference. Mostly I generally avoid going places where I'm likely to have to pass a lot of people.

Implying there was a problem to begin with. Where's the evidence of people catching this from 2 seconds spent next to someone else while walking nearby outdoors in opposite directions? You think that somehow that's not OK, but sitting 6 feet from someone indoors is?

(a) I don't sit 6 feet from someone indoors either.

(b) The problem is we don't know, and I'm in a risk group, so I don't want to take chances until something is proven to be safe.

Is this sarcasm or are you suffering from anxiety?

It's really hard for me to hold my breath going uphill, and also there's a huge wafting trail of aerosolized particles for 20+ feet behind other runners, so if I'm walking and they're running I'd have to hold my breath for longer than I can. Have you seen the simulations?