|Distance:||12.3 miles (19.8 km)|
|Meets:||A803, B8023, B8048, B803, A8010, A89, B8058, A8, B799|
|Route outline (key)|
The B802 is a medium-length B-road in Scotland's Central Belt.
It starts at a roundabout on the A803 in the centre of Kilsyth. It heads south and is dual-carriageway until the next roundabout where it narrows. The road continues through town. It meets the B8023 in an old quarry before crossing the Forth & Clyde Canal. The original bridge (now removed) was a swing bridge slightly to the west, at the point the B8023 heads westwards.
The road continues south to Croy. Originally the road turned left at a TOTSO to go through town but now appears to continue ahead to avoid the village. Both routes cross the Glasgow to Stirling railway line before reaching the B8048 at roundabouts; the western route multiplexes east along that road to rejoin the original route of the B802.
The road continues southwards. It bears left at the next roundabout and goes over the M80 (which is reached via the B8048). At the next mini-roundabout it reaches the now-unclassified original route of the A80 and turns right then left to follow it for a short distance. The B802 then follows the Condorrat Ring Road for a short distance before it TOTSOs right. It crosses a stream to enter open country.
The road continues south across the fields. It crosses the Glasgow to Cumbernauld railway line before traversing undulating terrain and eventually climbing into Glenmavis where it meets the B803, with which there is a short multiplex. There is then a short rural section, with the road passing between a hill and a golf course, before the road reaches Airdrie. It runs through the suburbs before crossing the A8010 (former B801) at traffic lights. Ahead is the town centre and the B802 is one-way northbound. Southbound traffic presumably heads west one block on the A8010 to follow a parallel unclassified road. The two directions meet at traffic lights on the original line of the A89, which marks the original southern end of the road.
The road to the south, originally unclassified, was later numbered B799. However, that road was later rerouted and so the B802 continues south to cross the current A89 at a roundabout immediately before going over the North Clyde Line. It then continues through the southern suburbs to reach open country and meet the B8058 at a roundabout just after. The B802 turns right and continues south through the village of Calderbank before bearing to the left at a point where the B799 continued ahead. Slip roads leading to/from the eastbound A8 are then met, after which the road ends at a T-junction on the current route of the B799, which provides access to the other A8 slip roads.