- A438 between A470 and A479, Powys (Grid ref SO136346)
- A438 between A479 and A4078, Powys (Grid ref SO160364)
- A438 between A4078 and A4079, Powys (Grid ref SO170373)
- A438 between A4079 and B4350, Powys (Grid ref SO180390)
- A438 between B4350 E and Powys boundary, Powys (Grid ref SO200420)
- A438 between Herefordshire, County of boundary and A4111, Herefordshire, County of (Grid ref SO300470)
- A438 between A4111 and A4103, Herefordshire, County of (Grid ref SO400431)
- A438 between A4111 and A4103, Herefordshire, County of (Grid ref SO400431)
- A438 between A4103 and A480, Herefordshire, County of (Grid ref SO465418)
- A438 between A480 and Huntington Lane, Hereford, Herefordshire, County of (Grid ref SO480412)
- A438 between Huntington Lane and A4110, Herefordshire, County of (Grid ref SO490408)
- A438 between A4110 and A49, Herefordshire, County of (Grid ref SO500403)
- A438 between A49 and A465, Herefordshire, County of (Grid ref SO511402)
- A438 between A465 and B4224, Herefordshire, County of (Grid ref SO513400)
- A438 between B4224 and Hampton Dene Rd, Herefordshire, County of (Grid ref SO523400)
- A438 between Hampton Dene Rd, Hereford and A4172, Herefordshire, County of (Grid ref SO584403)
- A438 between A4172 and A417, Herefordshire, County of (Grid ref SO700386)
- A438 between A417 and B4214, Herefordshire, County of (Grid ref SO707386)
- A438 between B4214 and A449, Herefordshire, County of (Grid ref SO709380)
- A438 between A449 and Herefordshire, County of boundary, Herefordshire, County of (Grid ref SO754366)
- A438 between LA boundary and B4208 (south), Worcestershire (Grid ref SO770365)
- A438 between B4208 (south) and B4211, Worcestershire (Grid ref SO800349)
- A438 between B4211 and Worcestershire boundary, Worcestershire (Grid ref SO860334)
- A438 between Gloucestershire boundary and A438, Gloucestershire (Grid ref SO889337)
- A438 between B4080 and A46, Gloucestershire (Grid ref SO896327)
- A438 between A38 and M5 JCT9, Gloucestershire (Grid ref SO913331)