In most places, when there is no sidewalk or path available, pedestrians are to move toward oncoming traffic on the far left side of the roadway.

Links:

https://www.runnersworld.com/training/a20797952/how-to-protect-yourself-from-cars/

https://www.chicagotribune.com/lifestyles/health/sc-health-1023-fitness-road-running-20131023-story.html

Click to access dsd_a112.pdf