You can follow the Silver Moccasin Trail, which starts at Chantry Flats and connects to the PCT at Three Points. Here’s a segment breakdown of the Silver Moccasin Trail:
Chantry Flat to West Fork CG via Gabrielino Trail … 9 miles (14 km)
West Fork CG to Angeles Crest Hwy via Shortcut Canyon … 3 miles (4.8 km)
Angeles Crest Hwy to Chilao Flat through Charlton Flat … 7 miles (11 km)
Chilao Flat to Three Points passes Horse Flats CG … 5 miles (8.0 km) This is where you connect with the PCT
Three Points to Cloudburst Summit via Pacific Crest Trail … 4 miles (6.4 km)
Cloudburst Summit to Islip Saddle via Pacific Crest Trail … 11 miles (18 km)
Islip Saddle to Mt Baden-Powell via Pacific Crest Trail … 10 miles (16 km)
Mt Baden-Powell to Vincent Gap via Pacific Crest Trail … 4 miles (6.4 km)