Angels Rest is a pretty good hike if it’s your first time in town. Not super long, though.
The Trail of Seven Falls in Silver Falls State Park is another great one, but again, not super long.
If you want something longer there’s Tillamook Head Trail out by the coast that would give you good views of the ocean and cliffs out there.
Others may have better options. Keep in mind it’s likely to be raining no matter where you go.
The issue is that, despite spending more money than any other country by an order of magnitude (excepting maybe the UK) per mile of track, we don’t get it done right the first time.
SF’s Central Subway which was, at one point, the most expensive rail project (light or otherwise) per mile of track in the world had to get the contractor to go in and completely replace the rails because they had tried to sneak substandard steel past the city.
The megacontractors who build these projects do not deliver quality, they do not deliver when they say they will, and they do not deliver for the cost they bid at. They do make a killing though.
The route selection isn’t that big of an issue. CAHSR was always intended to help connect the Central Valley to LA and SF. Merced, Bakersfield, and Fresno aren’t that small, and they aren’t that out of the way either.
SNCF’s bid did use the I-5 RoW, which doesn’t pass through these downtowns and would have required connecting spurs in the Central Valley. It would have been cheaper most likely, but not passing through the valley cities’ cores would probably have hurt support for the project and limited the impacts it could make for the rest of the state’s economy. (These cities (or at least Fresno) have since rejected having HSR go through their downtowns, but that’s a new problem.)
You would think, wouldn’t you? But this approach is quite common. Biden’s “deal” to prevent the rail strike was to make it illegal for them to strike. Air traffic controllers were also legally prevented from striking in the 80s, but did a wildcat strike anyway. Reagan fired all of them and then banned them from ever being rehired.