Rush
Creek Open Space Preserve, Rush Creek Preserve 
is popular with local cyclists, dog walkers, and joggers, who enjoy the easy
access and flat trails. The preserve transcends the trailhead atmosphere,
where big rigs roar by on Highway 101. The far side is pretty quiet, and teams
with wildlife. If you have binoculars, bring them for better views of the many
birds.
There is really only one loop possibility. A
small trail (Barry Spitz calls it the One-oh-One Trail in his Open Spaces
book) skirts the edge of the preserve along Atherton Avenue, then cuts through
a housing development before entering the preserve again at the junction of
Pinheiro Fire Road and Rush Creek Fire Road. From here you can take either trail
back to the trailhead. This loop is about 2 miles (or about 2.3 miles if you
take Rush Creek Fire Road and the Levee Trail). The featured hike described
below takes place entirely within the preserve, and is a semi-loop trek.
For the featured hike, start from the trailhead
on Pinheiro Fire Road, 
a
broad, dirt multi-use trail. Just past the gate, a small trail (One-oh-One)
heads uphill along the fenceline. Stay on Pinheiro Fire Road. The trail
drops down from the road to the edge of the marsh, and cattails are the dominant
plant here, with sprinklings of dock, honeysuckle, common snowberries, and pennyroyal
among the 'tails. Look for a lovely stand of wild roses twinning through
the barbed wire fence. This initial stretch of trail is partially shaded by
California bay, coast live oak, buckeye, and black oak. Poison oak thrives in
this preserve, so watch out for those leaves of three. In the damp pools of
the marsh, a variety of birds abound, including red-winged blackbirds and sandpipers. After
a few minutes of walking north and east, traffic sounds from 101 become muted.
The trail follows the contour of the marsh, and is almost completely level,
making it an easy stroll, 
although
mostly unshaded, and therefore hot in the summer. In the winter and spring,
Pinheiro gets very muddy, with some standing water covering the trail at times.
To the south gentle grasslands rise to hills of coast live and black oak and
California bay woods, the territory of hawks and vultures. Milk maids and California
buttercups dot the hillsides in late winter, while shooting stars and miner's
lettuce bloom on the shaded slopes. Later in spring, you might see pink flowered
clarkia. Pinheiro Fire Road passes a lovely solitary old valley oak. The trail
heads slightly uphill and enters the shade of a California bay wood. At
1.27 miles, a wooden fence protects a rerouted junction; a blank signpost stands
at the new junction. Stay to the right here, on Pinheiro Fire Road.
The trail drifts south and edges 
near
the deepest pools of the preserve. There are often lots of egrets and cranes
here, and they provide an interesting contrast as they stand upright in the
water, mostly still, while small planes fly close by overhead on the way to
a nearby airport. At 1.66 miles, Pinheiro Fire Road ends as the marsh peters
out into dry land. A trail (One-oh-One, again) turns right and heads out of
the preserve on a straight, eucalyptus-lined path near some houses. Stay
to the left, continuing around the cove.
In 1999 a bridge was constructed, making it possible
to cross a creek in the winter without soaking your shoes (and at times, legs).
This next section of trail is called Rush Creek Fire Road, but as of this writing,
there are no signs marking any of the trails at the junction. Rest or pause
under one of the large trees 
along
the trail and enjoy the view of the cove, and further to the west, the slopes
of Mount Burdell. A blue oak tree stands across the trail from a buckeye. Deer
seem to be around every corner, and paw prints in the sand suggest that coyotes
spend time near the water as well. Throughout this grassland you might see coyote
brush and a handful of shrubby manzanita. In late winter, wild radish and suncups
bloom in the grass. Bear left at two unsigned rough junctions where trails drift
to the right and head uphill. After passing a large cluster of California sagebrush,
at the edge of the cove, the trail curves to the left and then ends at 2.27
miles. What looks to be a smaller continuation of the fire road is no longer
blocked off with a large pile of rocks, but the path leaves the preserve property
after a few yards. Turn left and almost immediately, look for a
small trail running on a berm through the marsh (now thankfully marked with
a blank signpost). Turn left. After a few feet, at 2.30 miles, the
trail splits. Stay to the left, or you will be forced to travel cross
country (not so fun in wet months) to join the only proper trail. The level
path is lined with wild radish in spring. Look for ducks, geese, and swans
in the water, and pickleweed growing along the water's edge. The trail meets
up with Pinheiro Fire Road at a previously encountered junction, 2.51 miles;
turn right and retrace your steps to the trailhead.
Total mileage: 3.78 miles
Last hiked: Wednesday, May 9,
2001
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