UPDATED 9/1/2019. UP has moved the date window for its Chatsworth trackwork later by one week, and as of today, here are REVISED DATES for the Coast Starlight Tehachapi Loop rare mileage detours: Train 11 Leaving Oakland 13, 14, 15, and 16 Sept 2019 Train 14 leaving Los Angeles 14, 15, and 16 Sept 2019 Usual CS detour route of recent years, with no intermediate passenger stops between LA and Oakland. Lines traversed include Metrolink Antelope Valley line btw LAUS-Lancaster, UP Mojave Sub btw Lancaster-Bakersfield via Tehachapi Loop, UP Fresno Sub btw Bakersfield-Lathrop, at Lathrop a wye movement involving the Fresno, Tracy and Oakland subs, UP Oakland Sub btw Lathrop-Niles Jct via Altamont Pass, UP Niles Sub btw Niles Jct-Newark and normal routing north of Newark. Dates NOT guaranteed. Right now, plenty of coach space available on these trains with fares $50 each way btw LA and Oakland.