I stepped on a rattle snake while barefoot watering veggies a few years ago. I felt animal-ness below me as i was transferring my weight. I was stopping my forward weight transfer as i looked down. Before I could think I jumped backwards, yelled and raised my hands. It didn't try to strike, it just stayed there.
Being barefoot allowed me to know what I was stepping on, although it could have bitten my toesies easy without protection.
TBJ's Tracker School
I went barefoot or with thin, flat-soled shoes for a few years after I attended the tracker school a bunch. They call modern footwear "Coffins for our feet" -TB III. Modern footwear limits blood flow, movement, tactile perception, agility, speed, temp perception, aeration, stealth and build bacteria/fungus.
The tracker school advocates a "fox walk" which is a relaxed, nature-connection-enhancing movement. Most of videos I saw under a "fox walk" search did a decent job at teaching it. However, none mentioned that the tracker school advocated the foxwalk as our baseline movement. Baseline means 'relaxed / typical'. For example wild dog's baseline movement is a trot, cat's is a
"fox walk" ...so just watch them. ...Or walk barefoot on sharp gravel, you'd learn the fox walk real quick.
If you fox walk, barefoot while using wide-angle / splatter / owl vision you will experience the forest like a widescreen movie and not need to stare down at a 55degree angle like most do to avoid tripping. ...Cause you feel stuff before you've transferred your weight and can be looking around more than down.
The longest run I've gone on was about 12 miles barefoot, and I'm not a runner. I used what they call the fox run.
There is a certain ground temp which you shoultn't go barefoot if its colder than... I think they teach 50F (?)
Since I'm plugging them so hard: note their school isn't perfect. TBJ is just a person. TB III is just a person.
Here is a video of a running tips from pros. I was happy to see his run [4:50 into video] is exactly what would suggest aiming towards running. Short steps, bent legs, front foot takes body weight when it is fully under you or even after, push forward with your butt+ quads.