The 1986 National League was contested as the second division of motorcycle speedway in the United Kingdom.
Eastbourne Eagles were the winners of the competition for the second successive year.
[3] First round Second round Quarter-finals Semi-finals First leg Second leg Eastbourne were declared Knockout Cup Champions, winning on aggregate 90–64.
[6] The National League Pairs was held at Hackney Wick Stadium on 13 July and was won by Edinburgh Monarchs.
[10] Results Arena Essex Berwick Birmingham Boston Canterbury Eastbourne Edinburgh Exeter Glasgow Hackney Long Eaton Middlesbrough Mildenhall Milton Keynes Newcastle Peterborough Poole Rye House Stoke Wimbledon