starts on a40 in lay-by on left hand side opposite man hole in verge 533 yards west of a40 junction with road from hq, llandeilo. proceed west on a40 via broad oak (3.49 miles), climbing hill to cross roads to llanegwad (6.89 miles),continue on a40 to pontargothi village sign (7.40 miles) to nantgaredig. turn left at cross roads (m) on to b4310 (8.44 miles) * proceed south bound crossing narrow river bridge (m each end) (care) continue up hill to turn left at t junction on to b4300 (m) (9.56 miles)**. proceed eastbound on b4300 passing picnic area on left (10.46 miles) via llanarthne village sign (12.03 miles), continue east on b4300 past junction l to dryslwyn (13.67 miles) continue on b4300 past junction r maesybont to finish at mark near ffairfach and 250 yds before junction with a476.(17.8 miles) rs/18 grid references to be finalised but entire route is on landranger 159 start 615235. finish 628213. * note rs/27 continues straight on a40 at this point to carmarthen. ** note rs/27 enters from r at this point on b4300 from carmarthen