Nick Willis extends streak to 19 straight years with a sub-4 run

The last year the two-time Olympic medallist didn’t break the four-minute mark was in 2002

Anthony Famiglietti runs a 4-minute treadmill mile–on his 41st birthday

The 40-year-old who ran sub-4 with a dog has now done it on the treadmill, at 41

WATCH: Nike’s sub-4 to Western States-100 athlete

Watch Nike trail runner Matt Daniels in the film Sub-4 to States about his record breaking year on and off the trails