Nick Willis and John Walker are now tied with 18 seasons in a row with a sub 4:00 mile. Steve Scott is second on the list with 17 straight seasons.
Nick Willis (NZL) 18 years with a sub-4 mile
mark / ord / venue / meet / date
3:58.15i >4 h1 Notre Dame, IN Meyo Invitational 07-Feb-2003
3:53.51 2 Eugene, OR Bowerman Mile 19-Jun-2004
3:53.43 11 Oslo Bislett Games 29-Jul-2005
3:52.75 1 Wanganui 11-Feb-2006
3:55.09 4 New York, NY Reebok Grand Prix 02-Jun-2007
3:50.66 2 Eugene, OR Bowerman Mile 08-Jun-2008
3:53.54i 1 Boston, MA 07-Feb-2009
3:55.26i 1 Boston, MA Reebok Indoor Games 06-Feb-2010
3:51.95 10 Eugene, OR Bowerman Mile 04-Jun-2011
3:51.77 7 Eugene, OR Bowerman Mile 02-Jun-2012
3:55.70 1 Des Moines, IA Drake Relays 27-Apr-2013
3:49.83 2 Oslo Bislett Games 11-Jun-2014
3:51.46i 2 New York, NY Wanamaker Mile 14-Feb-2015
3:51.06i 2 New York, NY Wanamaker Mile 20-Feb-2016
3:56.41 2 Huntington, NY Long Island Mile 06-Sep-2017
3:56.77 5 Birmingham Emsley Carr Mile 18-Aug-2018
3:54.80 6 New York, NY Wanamaker Mile 9-Feb-2019
3:59.89 2 Boston, MA New Balance Grand Priz 25-Jan-2020
John Walker (NZL) 18 years with a sub-4 mile
mark / ord / venue / meet / date
3:58.80 3 Victoria, BC 07-Jul-1973
3:54.90 3 Helsinki 01-Aug-1974
3:49.40 1 Gothenburg 12-Aug-1975 world record
3:53.07 1 Stockholm 09-Aug-1976
3:52.00 1 Dublin Morton Games Mile 11-Jul-1977
3:56.40 1 Auckland 28-Jan-1978
3:52.85 6 Oslo IAAF Golden Mile 17-Jul-1979
3:52.70 2 Brussels Ivo Van Damme Memorial 22-Aug-1980
3:50.12 4 Zürich Weltklasse 19-Aug-1981
3:49.08 2 Oslo 07-Jul-1982
3:49.73 2 Berlin Internationales Stadionfest (ISTAF) 17-Aug-1983
3:49.73 2 Koblenz 29-Aug-1984
3:53.20 3 Cork 09-Jul-1985
3:50.93 3 Rome Golden Gala 10-Sep-1986
3:55.04 2 Barcelona 15-Jul-1987
3:52.48 9 Oslo Bislett Games 02-Jul-1988
3:54.28 8 Oslo 01-Jul-1989
3:55.19 2 Portsmouth 12-Aug-1990