Athletics at the 2012 Summer Olympics – Women's 800 metres

Women's 800 metres at the Games of the XXX Olympiad
Mariya Savinova and Ekaterina Poistogova celebrate after the race
Venue	Olympic Stadium
Date	8–11 August
Competitors	45 from 35 nations
Winning time	1:56.19
Medalists
01 ! Mariya Savinova  Russia 02 ! Caster Semenya  South Africa 03 ! Ekaterina Poistogova  Russia
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01 !		Mariya Savinova	Russia
02 !		Caster Semenya	South Africa
03 !		Ekaterina Poistogova	Russia

The Women's 800 metres competition at the 2012 Summer Olympics in London, United Kingdom. The event was held at the Olympic Stadium on 8–11 August.

While heat 3 and heat 5 of the qualifying round allowed some athletes to run as slow as 2:07s or 2:08s and qualify, the semi finals were decidedly quicker. In heat 1, Pamela Jelimo and Ekaterina Poistogova managed to qualify virtually together in mid 1:59s, those were the slowest times. In heat two, 2009 World Champion Caster Semenya challenged the field, leading Elena Arzhakova, Janeth Jepkosgei Busienei and Alysia Johnson Montaño into the finals. Halima Hachlaf ran 1:58.84 and didn't make the final. In the third heat reigning world champion Mariya Savinova led virtual newcomer Francine Niyonsaba into a 1:58.67 new national record for Burundi.

In the final, Montaño went to the front, with Jelimo and Jepkosgei Busienei on her shoulder, while Savinova and Semenya went to the back. The front running Montaño hit the half way mark in 56.31. Those positions held through 500 metres, when Jelimo charged out to a big lead down the back stretch, Montaño started to slow while Savinova started to move forward. At the 600 metre line, there was a confluence of runners moving forward meeting those moving backward. Savinova on the outside found herself in second place, though Jelimo had a 4 metre lead. Semenya was behind the wall of runners. In the next 100 metres, Savinova caught Jelimo, passing into the lead at the head of the straightaway and on to victory. Semenya was a full 10 metres back, but on the outside of traffic. As she went by, Montaño had slipped back to join a forward moving Arzhakova. As Semenya went by, Montaño accelerated enough to separate herself from Arzhakova and held that until the finish in what would ordinarily be an also-ran position of fifth place. In the last 100, Semenya ran past the rest of the field, taking second place, but was too far behind to have a chance to catch Savinova, Poistogova edged a dying Jelimo for the bronze medal.