The road starts at a T-junction on the A260 in Green Street Green and goes north-easterly. Less than a mile later the B255 crosses the road at a staggered crossroads where the B262 has priority.
The B262 continues through the village of Betsham before reaching a GSJ with the A2. The B262 multiplexes with the A2260 through the junction before regaining its number and heading north to end on the A226 Northfleet bypass. This section was numbered A2260 in 1991; when that road was given its current route in 2007 following construction of Ebbsfleet International station it became the B262.
Originally the B262 continued north-east from the A2 along Hall Road into Gravesend, crossing the B261 en route. It ended by going along Bath Street and meeting the B256. Apart from Bath Street, which is now the A226, this section is now unclassified.