Did you know social distancing for running is greater than standing still? When standing it is recommended to stay 6 feet apart from people, while running can be 10 times that number (60ft.) without a mask.
Why? The physics of small particles in moving air is different. Running toward the person in front of you increases the contact with the particles at longer distances pending your speed. That faster you run the more space you need. Just like cars, stopping distances go up the faster you go.