Thomas Guide:1269: B-6
Marston Canyon is a little-known finger of Balboa Park that offers a lovely trail through towering eucalyptus, olive and pepper trees. Bounded on the east by Richmond Avenue and the west by I-163, the canyon is a tiny but vibrant hidden gem quietly sheltering migrating warblers, such as Nashville, Black-throated Gray, Hermit, Yellow, and Wilson’s; Black-headed Grosbeak, Western Tanagers, Bullock’s and Hooded Orioles, Thrushes, Pacific Slope and Ash-throated Flycatchers, hummingbirds, hawks, and sparrows. Multiple trails lead into at least three canyon arms. No facilities.
Directions: From Highway 163, go east on University, then south on Vermont. Park at the intersection with Cypress. A sloped trail leads to the canyon floor. Meet at the information sign near the east end of the main canyon. Nearest bathrooms are four blocks north up Vermont at the Uptown District shopping center (Starbucks, Trader Joe's, Ralphs).