You will be exposed to the sun for most of this hike, so bring sunscreen and an umbrella or both. I would suggest going right at the beginning and hiking up high ridge through the tree line to make the hike a little easier. There are great views of the entire bay up top along the ridge. Then when you come back down you will cool off as you hike through the trees along dry creek. Then back out into the sun as you do the last leg of the trail and back to the parking lot. Great hike. I like that it starts you down at the south end so you don't have to pay to park at Garin Park
This a favorite trail for my wife and I as it is right next to the Stonebrae Elementary soccer fields where our son practices. This is a relatively new trail--the end of the loop isn't even shown on maps. There's a half mile ascent to begin with, but otherwise it's an easy trail with great views of the East Bay. Lots of birds to see along with the occasional rabbit and snake. The trail leads to a historical landmark and gravesite for Agape's Honcharenko (see reference below).
There's plenty of free parking next to the soccer fields. No bathrooms or water along the trail, but it's only a few miles. There are cattle grazing in the loop area of the trail, but we've never had any trouble with them.
“Ukraina” is the site of the farm and burial place of the Ukrainian patriot and exiled orthodox priest Agapius Honcharenko (1832-1916) and his wife Albina. Honcharenko was the first nationally conscious Ukrainian to arrive in the United States. He published the first American newspaper in Russian and Ukrainian languages, The Alaska Herald, from 1868-1872. He wrote the first book for the educational use of Native Alaskans. After moving here from San Francisco in 1873, He continued to publish political literature, which was smuggled into Czarist Russia. Honcharenko was a prominent scholar, humanitarian, and early champion for human rights. http://ohp.parks.ca.gov/ListedResources/Detail/1025