Fouragers Forest Park Field Guide

Trail kit

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Keyser Trail

An unsigned old roadbed that sidesteps Fire Lane 10's steepest pitch — gentler on the knees, quietly historic.

Effort
Moderate
Length
0.25 mi
Time
5-10
Net relief
82 ft
Elevation
717–799 ft
Surface
Old roadbed, natural
Uses
foot
Elevation · ft
On this trailGetting there

Somewhere on Fire Lane 10’s long descent through the far north, an unsigned track peels off to the left, drops through the trees on an old roadbed, and rejoins the fire lane a few minutes later — lower down, below the steep pitch, not back where it started. That’s the Keyser Trail. It looks more like a fire lane than a trail, and you could walk the main lane for years without ever noticing it’s there — which is roughly what most people do.

Take it for the one reason it’s good for: it sidesteps Fire Lane 10’s single genuinely steep pitch. If your knees on the way down — or your brakes, or a loaded pack — would rather not meet that drop, Keyser rolls you around it on a gentler line — an old quarter-mile roadbed that trends downhill overall, taking the same drop at an easier grade. It’s foot-only, quiet to the point of lonely, and now and then blocked by an impressive blowdown. Runners ticking off every line on the map will come looking for it on purpose; almost nobody else will.

Local Lens What earns this modest cut-through a second glance is the name. It honors C. Paul Keyser, who ran Portland’s parks from 1917 to 1949 — thirty-two years on the job, spanning the decades when Forest Park was slowly being assembled from the city’s logged-over west hills. There’s something fitting in the arrangement: the grand civic project remembered by a small, unsigned bypass that most people walk right past.

The upper end lands back on Fire Lane 10 near a small forested pond, but that quiet water is the fire lane’s payoff to tell, not this one’s. Come to Keyser for what it actually is — a gentler way past a steep spot, carrying a name worth knowing — and let the fire lane keep its rewards.

Getting there

StartNo trailhead of its own to EndBoth ends land back on Fire Lane 10

Start
No trailhead of its own — both ends open onto Fire Lane 10 in the far north, and you reach it only by walking the fire lane
Orientation
Far-north/Linnton corner of the park; you meet Keyser mid-descent on Fire Lane 10, not by driving to it — most people come from the Newton Road Trailhead up on the Skyline side
Parking
None at the trail itself; use the free lot at the Newton Road Trailhead up on NW Skyline, then walk down Fire Lane 10 to reach it — that lot is known for car break-ins, so leave nothing in view
Other access
On foot from Linnton (Hwy 30) up the Linnton Trail, which climbs to meet Fire Lane 10 a bit over half a mile up — then follow the fire lane to Keyser's ends
Ends at
Both ends land back on Fire Lane 10 — the lower junction rejoins the fire lane just below its one steep pitch, so you carry on down (or back up) the lane from there
Transit
Bus 16 runs Hwy 30 through Linnton; from the stop, climb the Linnton Trail to Fire Lane 10 (a real climb, not a stroll), then walk to Keyser
Accessibility
Not accessible — an unsigned natural-surface roadbed reached only by walking Fire Lane 10, with no facilities at any gate
Dogs
leashed
Best
year-round in daylight; muddy in the wet months, and easy to miss any time of year