Gerda Steyn
| Personal information | |
|---|---|
| Birth name | Gerda Steyn | 
| Nationality | South African | 
| Born | 3 March 1990 Bothaville, Free State, South Africa | 
| Education | University of the Free State | 
| Occupation | long-distance runner | 
| Years active | 2014–present | 
| Sport | |
| Country | South Africa | 
| Sport | Athletics | 
| Event(s) | Marathon, Ultramarathon | 
| Club | Phantane Athletics Club | 
| Coached by | self coached | 
| Achievements and titles | |
| Personal bests | 
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Gerda Steyn (born 3 March 1990) is a South African marathon and ultramarathon athlete. She set the down-run record for the 90 km Comrades Marathon in 2023 with a mark of 5:44:54, becoming the fourth woman under 6 hours for that race. She also holds the record for the 56 km Two Oceans Marathon and has won that event 6 consecutive times, starting in 2018.
On 11 April 2021, she became the SA marathon record holder with a time of 2:25:28 at the Xiamen Tuscany Camp Elite Marathon in Siena, Italy. She then broke her own record at the 2023 Valencia marathon, setting a time of 2:24:03.