Here is the answer I got:
"Outdoor activity is permitted at this time, while maintaining a distance of at least 6' from others outside your household. A mask is not required, yet encouraged in case keeping a physical distance proves challenging.
This information is available on the County's website (Health Orders) and the State's website (Regional Stay Home Order), plus mentioned in a number of press conferences and press releases."
"County information is located here. A simple breakdown of activities in Yolo County can be found in this document. Yolo County's Health Order can be found here, which indicates outdoor exercise as permissible in conjunction with State Orders.
State Regional Stay Home Order (RSHO) can be found here. This page gives more details regarding the RSHO. To find allowable activities, you can search this site using Yolo County as your area of reference."
So, how cool is that! You have no excuse, get out there and get some exercise! That's better than huddling inside and sharing the virus in your household!