She won the silver medal in women's pole vaulting at the 2004 Summer Olympics behind compatriot Yelena Isinbayeva, and won the bronze in the 2008 Summer Olympics. Feofanova was also a gymnast and was included in the Russian national team at the 1996 Summer Olympics but did not continue competing in the sport.
On 4 July 2004 she jumped 4.88 m in Heraklion, Greece, which was a world record at the time. In the World Athletics Championships, she was the second in 2001 and the first in 2003. She won also the World Indoor Championships in 2003, and she was the third in 2004. She finished 4th at the 2006 European Athletics Championships in Gothenburg.
She won the 2007 European Athletics Indoor Championships gold medal for the Pole Vault in Birmingham, Great Britain, with a height of 4.76 metres. Her main rival Yelena Isinbayeva did not take part in these Championships.
Svetlana Feofanova is currently studying at the Finance University under the Government of the Russian Federation - famous Russian university in economics and finance.
- Pole Vault (outdoors) = 4.88 metres, July 2004 - third on the all-time list
- Pole Vault (indoors) = 4.85 metres, February 2004 - fourth on the indoor all-time list
- 6 Times Russian National Outdoor Pole Vault Champion - 2001, 06, 07, 08, 11, 12
- 4 Times Russian National Indoor Pole Vault Champion - 2001, 06, 08, 10