Here's a link to the course map launching from the Beach Chalet parking lot (1000 Great Highway)-
Saturday Course Map
Head NORTH from the Beach Chalet and promptly take a right turn to get onto JFK. You will run along the dirt path for about a quarter of a mile until you come to a stop sign. Turn LEFT at this stop sign at the pedestrian crosswalk onto the dirt path running along JFK.
You will continue running along this path for some time. As you close in on the first mile you will see the 'Bison Paddock' on your left. Shortly after you pass the paddock, you will see Lake Spreckles on the left. If you need water, cross the pedestrian crosswalk over to Lake Spreckles and you will see the water fountain on your left.
Continue running on the dirt path for close to a mile and you will eventually come to a 4 way stop at the intersection of JFK/Transverse. This is roughly 2 miles. If you cross over to the LEFT side of JFK, you will find another water fountain.
Continue running on the RIGHT side of the dirt path past JFK/Transverse for roughly a mile. You will see a stop sign and traffic joining JFK from 'Conservatory Way'. (this is just prior to the Flower Observatory) There is a pedestrian crosswalk here. THIS IS 3 MILES! Turn around here and head back to the Beach Chalet for 6 MILES!!