The Backyard Trails Angwin Kept to Itself Are Finally on the Map

For years, the trail behind Pacific Union College didn't have a name most people would recognize. It had a number, maybe, stenciled on a post if you knew where to look, or no marker at all. You learned the route from a neighbor who learned it from the person who owned the place before them. Even people who lived on campus sometimes had no idea the network existed in their own backyard, a fact PUC itself now acknowledges about its own 35-mile forest.

That changed quietly, in stages, starting in 2018. And the shift matters less for what it did to the trails themselves than for what it says about how Angwin works: a town that has spent decades getting more formally connected to the region around it while staying exactly the same size at its center.

From Word of Mouth to a Conservation Easement

The land behind PUC, known as PUC Forest, covers roughly 1,000 acres and had been used, unofficially, by generations of Angwin residents on foot, on bikes, and on horseback. In 2018, the college placed the property under a conservation easement, working with CalFire and the Land Trust of Napa County to protect it permanently. A year later, the Napa Open Space District signed on with a trail license agreement, which is the paperwork that turned a patchwork of unsigned paths into a mapped system tied into the broader Bay Area Ridge Trail network.

That's not a small distinction if you've hiked here for years without ever seeing an official map. Numbered trail markers now guide the routes, even where individual trails still don't carry names. If you've noticed new signage on your usual loop toward Inspiration Point, that's why. The rock outcropping east of the forest, where the ridge suddenly opens onto Chiles Valley, Pope Valley, and the wide basin holding Lake Berryessa, has been a local landmark for as long as anyone can recall. It's now also a documented stop on a regional trail system, which is a different kind of landmark to be.

Why a Land Trust Cares About Angwin Specifically

The formalization wasn't only about recreation. PUC Forest sits directly between Las Posadas State Forest and the Dunn-Wildlake Preserve, closing a gap in a wildlife corridor that runs north into the Mayacamas Mountains and south toward Benicia.

"The biggest gap in the northern part of the corridor is in Angwin."

That's Doug Parker, executive director of the Land Trust of Napa County, describing why this specific stretch of forest mattered enough to protect. Bay Nature's reporting on the project notes that mountain lions and black bears use the corridor, and that Moore Creek, which runs south through the forest, feeds Lake Hennessey, the water supply for the city of Napa. The same land you might walk on a Sunday morning is doing quiet work as habitat connectivity and watershed protection. That's not typically how a hiking loop gets discussed, but it's an accurate way to think about this one.

The Race That Started Small and Is Still Small on Purpose

Nowhere is the tension between formalized and small more visible than in Angwin's own footrace. Angwin to Angwish, held every May at PUC, has sold out for three consecutive years, with the 2026 edition on May 3 drawing about 160 runners for the 10K, 26K, and a kids' one-mile race. Entrants ranged in age from 5 to their 60s, and while most came from the community and the state, some flew in from Tennessee, Arizona, and Oregon.

This year's race added course signage through the forest and more community support along the route, changes overseen by Abraham Garrido, a PUC alumnus who has directed the event since 2023. On the results side, PUC senior Andrea Maidan won the women's race in 2:40:16, and alumnus Pablo Garrido took the men's 26K in 2:12:30.

What's notable isn't the growth curve. It's the cap. A race that could plausibly market itself regionally has instead stayed a 160-person event that sells out because that's the size it's built for, not because demand has hit a ceiling. That restraint mirrors the trail formalization itself: better maps and official protection, but no push to turn Angwin into a bigger draw than it already is.

Where to Actually Start a Hike

If you're heading out this season, the practical entry points haven't changed even as the paperwork behind them has:

• Angwin-Parrett Field, 1 Airport Way, the most direct access to the flatter Saddle and Mill Valley sections of the forest
• Las Posadas Road (roughly 264 to 598 Las Posadas Rd), which connects into the state forest side of the system, including routes toward Linda Falls
• The Maze, near Helmer and Sons on Howell Mountain Road, a less obvious entry point locals have used for years

There's no fee and no potable water or restrooms at any of these access points, so plan accordingly. Dogs are permitted on leash, horses are welcome but kept off single-track sections, and the forest closes from dusk to dawn.

The Plaza Hasn't Grown to Match

Here's the part that tells you the most about what kind of place Angwin actually is. All of this, the easement, the Ridge Trail connection, the out-of-state race entrants, has happened without any change to the town's commercial core. Angwin Plaza still holds the same handful of businesses it has for years: the College Market, which operates as Howell Mountain Market and carries what it advertises as the largest selection of natural bulk foods and vegan items in the area, ACE Hardware, Silverado Credit Union, and the U.S. Post Office. That's the full list.

There's no restaurant row developing around the trailhead traffic. No new retail cluster has sprung up to meet runners flying in for a Saturday race. The town's daily rhythm, grocery run, hardware store, bank, post office, still fits inside one small plaza, even as the land around it becomes more visible on maps that stretch well past Napa County.

That combination, a trail network with regional infrastructure behind it and a town center that hasn't budged, is the actual story here. Angwin isn't becoming a destination. It's becoming better documented as exactly what it already was: a small mountain community with an unusually large amount of protected forest in its own backyard.

If Angwin Ever Comes Up in Your Plans

Whether you're deciding to stay put on Howell Mountain or thinking ahead to a future move within Napa Valley, understanding how a place actually functions, day to day, on the ground, tends to matter more than any listing photo can show. The Joel Toller Team works across Angwin and the rest of Napa Valley with exactly that kind of local grounding. When the conversation turns from trail maps to real estate, reach out to schedule a confidential consultation.