Dear Cyclists on American River Trail...
Please follow trail etiquette. The trail is explicitly marked that runners and pedestrians must keep to the left, facing oncoming cyclist traffic. When passing, cyclists cut to the inside of the trail, and everyone else cuts to the outside. If there is not room to pass due to a crowd, please slow down. These rules are basic etiquette and are consistent with most paved/laned trails in California.
I almost got hit 3 times today on a long run by oncoming cyclists who tried to cut to the outside rather than the inside. One of them gestured that I was on the wrong side, which I was not.
Sincerely, a runner and fellow cyclist.