According to Realtime Trains the route and timings were;
<p>Theale Murco.........................1300............1300.........................RT
Southcote Junction...............1344.............1343...........................1E
Oxford Road Junction..........1346.............1345...........................1E
Reading West Junction........1350............1348..........................2E
Goring &amp; Streatley ................1359 1/2......1357 1/2....................2E
Moreton Cutting.....................1408............1407 3/4..................RT
Didcot East Junction.............1410.............1411 3/4......................1L
Didcot Parkway [DID]............1411...............1412 3/4.....................1L
Foxhall Junction.....................1415..............1414..........................RT
Milton Junction.......................1418/1428...NoRep/1429 1/2......1L
Steventon................................1431..............1432...........................1L
Wantage Road........................1438.............1436 1/4.....................1E
Challow....................................1442/1448..NoRep/1449.............1L
Uffington (Oxfordshire)..........1453.............1452...........................1E
Swindon [SWI].........................1521.............1517...........................4E
Wootton Bassett Jn...............1529............1530...........................1L
Hullavington............................1540............1542..........................2L
Westerleigh Junction............1556............1556.........................RT
Bristol Parkway [BPW]..........1602/1615...1602/1615...............RT
Patchway [PWY].....................1620............1619 3/4...................RT
Pilning [PIL]..............................1626............1625.........................RT
Severn Tunnel East...............1627.............1634..........................7L
Severn Tunnel West.............1632.............1640 1/2...................8L
Severn Tunnel Jn ..................1633.............1642 1/4....................9L
Llanwern West Junction......1645............1653..........................8L
Maindee West Junction.......1649............1657 1/4....................8L
Newport [NWP].......................1651.............1658 3/4...................7L
Marshfield................................1748.............1707........................41E
Cardiff Central [CDF].............1756 1/2......1715 1/2...................41E
Pontyclun [PYC].....................1810.............1729........................41E
Bridgend [BGN]......................1820............1739........................41E
Stormy......................................1825............1744........................41E
Margam Moors Junction......1830............1755.......................35E
Margam T.C.............................1835/1905..1803/1835.............30E
Port Talbot Parkway .............1910.............1906 1/2...................3E
Briton Ferry [BNF]..................1914..............1912 1/4......................1E
Neath [NTH]............................1916.............1919 1/2....................3L
Swansea Loop West.............1927.............1933..........................6L
Llandeilo Junction.................1943.............1945..........................2L
Llanelli [LLE]............................1945............1946 3/4....................1L
Ferryside [FYS].......................2001............2001........................RT
Carmarthen Junction[XCI]...2013............2010.........................3E
</p>
Whitland [WTL].......................2031............2026........................5E
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