Mineral King Road is narrow, steep and winding, with unpaved sections. The area is usually accessible from late spring into October; check road status before setting out, and avoid bringing an RV or trailer. The small, rocky trailhead lot can fill in busy periods. Marmots may damage vehicle hoses and wiring, so follow the park's vehicle-protection advice.
Carry food and safe drinking water for the hike; stream and lake water isn't guaranteed safe to drink. Silver City Restaurant near the Mineral King Ranger Station is the closest food stop and is known for its pies. Early-summer mosquitoes can be a nuisance, and pets aren't allowed on the trail.