Found on maps as the T.P. Jim Trail, the way up Baldy Mountain is open and exposed. T.P. Jim was a local tour guide and Central Washington University graduate who helped local youths avoid gangs trouble and become more involved in hiking and climbing. He has been honored with a trail and monument named after him. The monument can be found at the summit of Baldy.
There's a real danger of overheating on this trail in the summer months, so it may be best saved for an early spring or fall hike, perhaps even a winter conditioner.
From the road shoulder, head toward the gate, the only remaining portion of a cattle fence from long ago. There is a choice to be made now: steep or less steep. For a get-there-fast approach, continue straight through the gate. This is the T.P. Jim trail. It is extremely steep, but does provide a minimal amount of shade in before coming up onto a flank of Baldy into the sun. You will go through the bottom of a canyon draw, up to the point above you before continuing to the top of Baldy along the ridgeline.
The more moderate ascent is offered by the trail to your left just before you pass through the gate. Take a left before you get to the gate, stepping over old wire and barbed wire. After about 15-20 feet, you will find the more moderate route. This is a little more forgiving route as far as steepness goes, but it's very exposed. This trail sweeps around, adding a bit more length and distance but can be easier on the knees. The two routes converge about a mile up, and there are some very steep sections afterward, though not quite as steep as the start of the T.P. Jim Trail.
The way is straightforward. There are a few cairns along the way, and most of the route is along the ridgeline and can be windy at times. Along the way, enjoy wildflowers encouraging you with every step in the springtime. In autumn, the fall color in the Yakima valley can be stunning. And on clear days, the panorama of the Cascade crest is gorgeous. Wildlife include deer and big horned sheep.