| May 16, 1971 – Marty Liquori beats Jim Ryun in first ‘Dream Mile’ 3:54.6 to 3:54.8 |
| May 16, 1982 – Polly Plumer sets U.S. high school mile record 4:35.24 at UCLA/Pepsi Invit |
| May 17, 1975 – Filbert Bayi runs World Record 3:51.0 at ‘Dream Mile’ in Jamaica |
| May 18, 1957 – Kansas sophomore Wilt Chamberlain wins Big 7 high jump at 6-5 |
| May 18, 1962 – Al Oerter throws first 200 foot discus toss with 200-5 1/2 |
| May 20, 1900 – 2nd modern Olympics officially opens in Paris, France |
| May 20, 1967 – Tommie Smith runs World Record 400 meters in 44.5 seconds |
| May 22, 1976 – Eamonn Coghlan wins 1,500 and 5,000 meters at IC4A championships |
| May 22, 1976 – Shorter, Rodgers and Kardong go 1-2-3 at U.S. Olympic Trials Marathon |
| May 22, 1988 – Ulf Timmermann breaks World Record shot put with 75-8 toss |
| May 23, 1964 – Dale Greig runs women’s World record marathon 3:27:45 |
| May 23, 1982 – Daley Thompson completes World Record decathlon with 8,704 points |
| May 24, 1957 – 1956 Olympic Champ Tom Courtney runs 800 meter World Record 1:46.8 |
| May 25, 1980 – Jacek Wszola of Poland sets World Record in high jump 7-8 |
| May 26, 1951 – Andy Stanfield sets World Record for 220 yards in 20.6 seconds |
| May 27, 1916 – James Meredith runs World Record 400 meters in 47.4 seconds |
| May 27, 2001 – Alan Webb’s 3:53.43 mile breaks Jim Ryun’s High School Mile Record |
| May 27, 2017 – Norway’s Jacob Ingebrigtsen 3:58.07 is youngest sub-4:00 miler at age 16 |
| May 29, 1985 – Amputee Steve Fonyo completes cross-Canada run after 14 months |
| May 30, 1969 – Derek Clayton runs World Record marathon 2:08:33.6 at Antwerp |
| May 31, 1913 – Sweden’s Alexis Ahlgren runs World Record marathon 2:36:06 in London |
| May 31, 1994 – Alberto Salazar is only U.S. man to win South Africa Comrades Ultramarathon |
| May 31, 2004 – Kenenisa Bekele runs World Record 5,000 meters of 12:37.35 |
| May 31, 2008 – Usain Bolt sets World Record 100 meters in 9.72 seconds |