I checked the timetable last night, and the actual title is California Region Timetable 20 of March 2009, which I believe was the last one issued. If you can find one, an example of what you can expect covers the Orange County line to Oceanside, compiled from 5 different pages, as follows:
LAUS MP 0.0 to CP MISSION MP 0.7, 0.7 miles; SCAX River Sub, Terminal Lead
CP MISSION MP 0.8 [sic] to CP SAN DIEGO JCT. MP 140.2, 0.2 miles; SCAX River Sub, SW Connecting Track
CP SAN DIEGO JCT. MP 140.2 to SOTO MP 144.4, 4.2 miles; SCAX River Sub, West Bank Line
SOTO MP 144.4 to FULLERTON JCT. MP 165.5, 21.1 miles; BNSF San Bernardino Sub
FULLERTON JCT. MP 165.4 [sic] to COUNTY LINE MP 207.4, 42.0 miles; SCAX Orange Sub
COUNTY LINE MP 207.4 to OCEANSIDE MP 226.4, 19.0 miles; SDNR San Diego Sub
SCAX = Metrolink, SDNR = San Diego Northern
A quirk here is that the mileage from San Diego Jct. to Oceanside is the former ATSF mileage from San Bernardino (0.0) via San Bernardino, Pomona, Pasadena, Los Angeles 1st St., Redondo Jct., and Fullerton to San Diego, a line now severed and used in part for the Gold Line. The 91 Corridor line of Metrolink (named for the freeway it parallels) diverges at Fullerton Jct. (MP 165.5 = 45.5), decreasing to 0.0 at San Bernardino via Corona.
If you manage to find the timetable and compile at station list with actual miles, please post it.