Mount Rainier: Pinnacle Peak Trail Closed by Wildfire
An active wildfire has closed the Pinnacle Peak Trail and the surrounding area in the south of the park until further notice.
If you're planning a hike on the south side of Mount Rainier, a closure is going to change your plans right now. An active wildfire is burning in the Pinnacle Peak area, and the park has closed the trail along with the entire zone around it until further notice.
In practical terms, access to the Pinnacle Peak Trail is cut off. The closure doesn't stop at the trail itself. It covers the whole ridge, from Lane Peak to Foss Peak, and runs down toward Stevens Canyon Road all the way to the southern park boundary. So an entire stretch of the high country is off-limits until things get back to normal.
Here's a useful detail so you don't read too much into this notice: Stevens Canyon Road stays open. The road that runs through this part of the park isn't affected by the closure. You can still take it to reach other areas, as long as conditions allow. Only the Pinnacle Peak Trail and the backcountry around it are closed to access.
A fire closure like this one can shift fast, in either direction. As long as the fire stays active, treat the area as closed and don't try to work around it. Safety comes first, and air quality can also drop near a burn. We'd recommend checking access conditions right before you head out, since the closure will lift without a set warning ahead of time.
To plan your trip around these constraints and scope out the hiking alternatives that are still open, lean on the Mount Rainier park guide. You'll find what you need to put this area back in the context of the whole park and adjust your route without giving up on the mountain. Right now, it's smart to have a plan B lined up in the south before you even get there.