Weltklasse Zürich
Weltklasse Zürich is an annual, invitation-only, world-class track and field meeting at the Letzigrund in Zürich, Switzerland, generally held at the end of August. Previously one of the IAAF Golden League events, it now serves as a final of the Wanda Diamond League, alongside Memorial Van Damme between 2010 and 2019. In 2021, Welklasse Zürich will serve as the sole final of the Diamond League. One of the first large-scale international athletics events, it is sometimes referred to as the one-day Olympics. Weltklasse Zürich first took place on 12 August 1928. In the beginning, the meeting was nicknamed by the public the "Nurmi meeting" after the most admired and celebrated participant at the time, Paavo Nurmi. On 21 June 1960, on the Letzigrund track, Armin Hary became the first human to run the 100 m dash in 10.0 seconds.
UBS has supported Weltklasse Zürich as its main sponsor since 1981. Other sponsors are Vaudoise Assurances, Migros, Le Gruyère Switzerland, Medica, Omega, Swiss, Lexus, Erdgas and Puma.
Track surface
The surface at the Letzigrund Stadium was developed in 2014 by the Swiss company CONICA. The new surface was installed in June 2014 at a cost of 800,000 CHF and was paid for by the city of Zurich, which owns Letzigrund Stadium.World records
Over the course of its history, numerous world records have been set at Weltklasse Zürich.| Year | Event | Record | Athlete | Nationality |
| 2009 | Pole vault | 5.06 m | Yelena Isinbayeva | |
| 2006 | 100 m | 9.77 | Asafa Powell | |
| 1997 | 800 m | 1:41.24 | Wilson Kipketer | |
| 1997 | 3000 m steeplechase | 7:59.08 | Wilson Boit Kipketer | |
| 1997 | 5000 m | 12:41.86 | Haile Gebrselassie | |
| 1996 | Mile | 4:12.56 | Svetlana Masterkova | |
| 1995 | 5000 m | 12:44.39 | Haile Gebrselassie | |
| 1995 | 3000 m steeplechase | 7:59.18 | Moses Kiptanui | |
| 1992 | 3000 m steeplechase | 8:02.08 | Moses Kiptanui | |
| 1991 | 4 x 100m relay | 37.67 | Michael Marsh Leroy Burrell Dennis Mitchell Carl Lewis | |
| 1989 | 110 m hurdles | 12.92 | Roger Kingdom | |
| 1988 | 400 m | 43.29 | Harry Reynolds | |
| 1985 | Mile | 4:16.71 | Mary Slaney | |
| 1984 | 100 m | 10.76 | Evelyn Ashford | |
| 1981 | Mile | 3:48.53 | Sebastian Coe | |
| 1981 | 110 m hurdles | 12.93 | Renaldo Nehemiah | |
| 1980 | 1500 m | 3:52.47 | Tatyana Kazankina | |
| 1979 | 1500 m | 3:32.1 | Sebastian Coe | |
| 1975 | Discus throw | 70.20 m | Faina Melnik | |
| 1973 | 110 m hurdles | 13.1 | Rod Milburn | |
| 1969 | 110 m hurdles | 13.2 | Willie Davenport | |
| 1960 | 100 m | 10.0 | Armin Hary | |
| 1959 | 200 m hurdles | 22.5 | Martin Lauer | |
| 1959 | 120 y hurdles | 13.2 / 13.56 | Martin Lauer | |
| 1959 | 110 m hurdles | 13.2 / 13.56 | Martin Lauer |