I was referring to the Aug 2019 route. I am not sure whether he ran clockwise in the east direction (North Ridge) or counterclockwise in the west direction (Cowing to Sinbad Creek) but on the EBRPD map
https://www.ebparks.org/civicax/filebank/blobdload.aspx?BlobID=24388 , the only areas marked with W for drinking water above Augustin Bernal Park are on the east side of the park. The map I am looking at is on p. 2 and I assume it is up to date. The W that was closest is near the box that holds all of the tall antenna structures near the North Ridge trail. I don't know if Philip had a map with him or had looked at in detail prior to the run. But from the map, I don't know of any drinking water at the north end of the Pleasanton Ridge park or the west side trails at all. If it was a hot day, and if it were me, I would have maybe stuck to the side of the park with the drinking water which is at least as I can tell the east side. Or in the past when I have entered the park through Golden Eagle and gone through Augustin Bernal along shady trails and it is really hot up there, I've just turned around and gone back.