| Road | From | To | Notes |
|---|
| B77 | A77 north of Maybole | A77 south of Maybole | Former route of A77 through Maybole before bypass opened in 2022. All other B roads are numbered with three or four digits. |
| B700 | Torphichen Place at A8 | Lothian Road at A700 | |
| B701 | Moredun | Drumbrae | |
| B702 | Straiton | Loanhead | |
| B703 | Dalkeith | Newtongrange | |
| B704 | Lasswade | Gorebridge | |
| B705 | Auchinleck | Mauchline | |
| B706 | Dunlop at A735 | Beith at B7049 | |
| B707 | Auchentiber at A736 | Highfield, North Ayrshire at A737 Dalry Bypass | |
| B708 | Bathgate at A89 | Bathville Cross, Armadale at B8084 | |
| B709 | A7, Langholm | A7, Heriot | |
| B710 | Bowland, northwest of Galashiels, at A7 | Caddonfoot at A707 | through Clovenfords |
| B711 | A7, southwest of Hawick | Tushielaw at B709 | |
| B712 | Rachan Mill, southeast of Biggar, at A701 | bridge over River Lyne, west of Peebles, at A72 | |
| B713 | southwest of Catrine, at A76 | Sorn, at B743 | |
| B714 | Saltcoats | Dalry | Also includes old A737 road through Dalry |
| B715 | Forth, A706 | A71, southwest of Fauldhouse | |
| B716 (defunct) | B766 in Croftfoot | B758 in Newton | Downgraded sometime after the 1970s. |
| B717 | Eastfield, west of Harthill at B7066 | West Tarbrax Farm, southwest of Stane, at A71 | |
| B718 | Blackridge, at A89 | Harthill, at B7066 | |
| B719 | Greenhillstairs, at B7076 | northwest of Moffat, at A701 | |
| B720 | A7, north of Canonbie | B6357, west of Canonbie | Former A7 before bypass |
| B721 | Annan | Gretna | |
| B722 | Annan | Langholm | |
| B723 | Annan | Eskdalemuir | Former A74 before bypass by motorway |
| B724 | Annan | Collin, A75 | |
| B725 | Waterbeck, at B722 | Dumfries | |
| B726 | Nithbank Hospital, Dumfries, at B725 | Kingholm Quay, at unclassified road Kingholm Loaning | |
| B727 | west of Dalbeattie, at A745 | Gatehouse of Fleet, at B796 | |
B728 | unused | | |
| B729 | A76, north of Dumfries | Moniaive A702, Carsphairn A713 | A702 subsumes the B729 route for two miles east of Moniaive |
| B730 | north of Patna, at A713 | Dreghorn, Irvine, at B7081 | |
| B731 | west of Thornhill, at A702 | south of Thornhill, at A76 | |
| B732 | west of Thornhill, at A702 | north of Thornhill, at A76 | |
| B733 | northwest of Kirkcowan, at A75 | Wigtown, at A714 | |
| B734 | Girvan, at A77 | Pinmore, south of Girvan, at A714 | scenic route via Barr |
B735 | unused | | |
| B736 | west of Palnackie, at A711 | west of Castle Douglas, at A75 | |
| B737 | Stair Drive, Stranraer, at A77 and A75 | Leswalt Road, Stranraer, at A718 | |
| B738 | Kirkcolm, at A718 | Portpatrick, at A77 | scenic route |
| B739 | corner of Glasgow Prestwick Airport, Monkton, at A79 | east of Ayr, at A719 | |
| B740 | Blackburn Farm, northwest of Abington, at B7078 | Sanquhar, at A76 | |
| B741 | Girvan, at A77 | New Cumnock, at A76 | via Dalmellington |
| B742 | between Maybole and Minishant, at A77 | east of Glasgow Prestwick Airport, at A77 | A77 will soon be bypassed by Maybole Bypass |
| B743 | Prestwick / Muirkirk | A70 near Sorn / Strathaven [1] | |
| B744 | Belston (A70) | Galston (A719) | |
| B745 | Drumclog, at A71 | Dungavel Farm, at B743 | |
| B746 | south of Loans, at A78, to Loans, at A759 | Troon town centre, at A759, to northeast Troon, also at A759 | road is in 2 distinct segments |
B747 | unused | | |
| B748 | South Harbour Street, Ayr, at A719 | South Harbour Street, unclassified road | less than 0.5 miles long |
| B749 | A79 | Troon Harbour | |
| B750 | Dundonald town centre, at B730 | east of Dundonald, at A759 | |
| B751 | opposite M77 from Fenwick, at A77 | northeast of Symington, at B730 | via Kilmaurs |
| B752 | east Stevenston, at A738 | unclassified road Shore Road, Ardeer | |
| B753 | west Coatbridge, at A89 | Coatdyke, at A89 | Coatbridge southern ring road, via Whifflet |
| B754 | Overtown | A723, Motherwell | |
| B755 | west Hamilton, at A72 and A724 | Fairhill, south Hamilton, at A723 | |
| B756 | Uddingston, at B7071 | Viewpark, at A724 | |
| B757 | M80 | Milton of Campsie | |
| B758 | Calderbraes, at A721 | High Blantyre, at A725 East Kilbride Expressway | |
| B759 | Busby at A727 | Cambuslang at A724 | |
B760 | unused | | |
| B761 | College Milton, East Kilbride at A726 | The Village, East Kilbride at A725 | |
| B762 | Pollok at A736 | Eastfield, Rutherglen at A724 | |
| B763 | Crossmyloof, at B768 | Haghill, at A8 | via Oatlands |
| B764 | Eaglesham, at junction where Moor Road, Montgomery Street and Polnoon Street meet | East Kilbride at A726 | Formerly continued down length of Moor Road to Fenwick Moor at A77. |
| B765 | Carmyle | Auchinairn | |
| B766 | Thorntonhall Roundabout, at A727 | Battlefield, at B768 | |
| B767 | Cathcart, Glasgow at B762 | Eaglesham at B764 | Northern section (Clarkston Road) was formerly part of the original A727 |
| B768 | Eastfield, Rutherglen | Ibrox | |
| B769 | Stanecastle roundabout, Irvine | B768 at Pollokshields | via Stewarton |
| B770 (defunct) | A8 east of Renfrew | A736 at Nitshill | Upgraded to Class I status as the A754 (now A736) after the 1960s. |
| B771 | Dykebar, Paisley, at A726 | Barrhead, at A736 | |
| B772 (defunct) | A726 in Paisley | A737 in Paisley | Upgraded to the A761; the western half has been dualled while the eastern half is unclassified as it has been bypassed by the A761. |
| B773 | Darnley, at A726 | Barrhead, at A736 | |
| B774 | Castlehead, Paisley, at A761 | Barrhead, at B771 | |
| B775 | northwest Paisley, at A726 | Caldwell, near Lugton, at B777 | |
| B777 | roundabout with A737 SW of Beith | junction with B780 south of Kilbirnie | by way of Glengarnock – passes Glengarnock railway station |
| B778 | Kilwinning | Fenwick | |
| B779 | Kilwinning, at A737 | northern Irvine, at A737 | no continuous route due to A78 Kilwinning and Irvine bypasses |
| B780 | Stevenston | Kilbirnie | via Saltcoats, Ardrossan and Dalry |
| B781 | Irvine | Dalry | |
| B782 | West Kilbride town centre, at B781 | Highthorn Wood, by Milstonford Farm, north of West Kilbride, at A78 | |
| B783 | between West Mains, East Mains and Lymekilns in East Kilbride | between East Mains, Calderwood and Nerston in East Kilbride | |
| B784 | east of Camphill Water Treatment Works, west of Kilbirnie at A760 | between Glengarnock and Dalry, at B780 | |
| B785 | Kilwinning | A736 | |
| B786 | Lochwinnoch, at A760 | Kilmacolm, at A761 | |
| B787 | west Howwood, at A737 | Johnstone, at B789 | has a spur to A737 at Miliken Park |
| B788 | east Greenock, at A8 | south Kilmacolm, at A761 | |
| B789 | Langbank, at A8 | west Paisley or Elderslie, at A761 | |
| B790 | Inchinnan Industrial Estate, at A726 | Bridge of Weir, at A761 | |
| B791 | Renfrew Town Centre, at A8 | southwest Renfrew, at A741 | |
| B792 | Blackburn, A705 | West Calder, A71 | |
| B793 | Southwick Bus Stop, at A710 | northeast of Dalbeattie, at A711 | |
| B794 | Dalbeattie, at A711 and A710 | Corsock, on River Urr, at A712 | |
| B795 | northeast of Castle Douglas, at A75 | Laurieston, Dumfries and Galloway at A762 | |
| B796 | southeast of Gatehouse of Fleet, at A75 | Gatehouse Station and New Rusko, unclassified road | also includes spur to southwest of Gatehouse of Fleet |
| B797 | Mennock, southeast of Sanquhar, at A76 | Abington, at A702 | through Leadhills and Wanlockhead |
| B798 | Leswalt, northwest of Stranraer, at A718 | next to Kirminnock Burn, at B738 | |
| B799 | southeast Chapelhall, at A73 | east Holytown, at A773 and A723 | |
