As a teenager, Sotherton played
netball for the Isle of Wight, and won two English Schools' championships in the heptathlon. She moved to the
Midlands in 1998, to become a member of
Birchfield Harriers athletics club. She made her senior British team debut in 2002.
2004 She gained international recognition in 2004 when she unexpectedly won a
bronze medal at the
Summer Olympics in
Athens behind
Carolina Klüft (gold) and
Austra Skujytė (silver), scoring 6424 points and finishing ahead of defending Olympic champion Lewis, who dropped out due to injury. She was famously criticised for settling for the bronze medal instead of chasing the silver in the final event, the 800 m, by her coach
Charles van Commenee.
2005 In March 2005 she competed in the European Indoor Championships, where she took
silver once again behind Klüft. At
Götzis,
Austria in May Sotherton was again beaten into second, behind the Swede, but she did record a personal best of 6547 points. At the AAA's National Championship in July, Sotherton competed in four individual events and took her first senior national title, winning the
long jump with a jump of 6.48 metres. At the
2005 World Championships Sotherton had held a medal position going into the sixth event, despite some below average performances, but a disastrous javelin saw her drop out of contention. Sotherton did manage to knock nearly 2.5 seconds off her personal best to win the final 800 m, but despite closing the overall gap on those ahead she only finished fifth.
2006 In March 2006 Sotherton competed for England in the heptathlon at the
Commonwealth Games in
Melbourne. She took
gold with a score of 6396, ahead of
Kylie Wheeler of
Australia (silver) and her teammate
Jessica Ennis (bronze). In August 2006 she competed for
Great Britain and
Northern Ireland in the heptathlon at the 2006
European Athletics Championships in
Gothenburg. She came seventh ahead of her teammate
Jessica Ennis, after a disappointing javelin event caused her to drop from second.
2007 2007 saw Great Britain host the
European Indoor Championships, in
Birmingham. Klüft led after the
hurdles, but Sotherton and compatriot Jessica Ennis trailed closely behind. The
high jump saw Ennis take the lead over Klüft and Sotherton, with a jump of 1.91, but Sotherton set a personal best for indoors of 1.88. Seven points separated Klüft and Sotherton. In the
shot put, Sotherton took a two-point lead ahead of defending champion Klüft. The long jump saw Klüft take a 24-point lead over the Briton. In the
800 m, a strong event for Sotherton, she needed to take 1.6 seconds from Klüft to see her beaten for the first time since 2002. Sotherton set a personal best 2:12.54, but Klüft also underscored her previous mark to win by 17 points. This was her smallest winning margin ever. Sotherton took silver, and
Karin Ruckstuhl the bronze. In one of the best pentathlons of all time, many athletes set national records and Klüft and Sotherton rose to second and fourth on the all-time lists respectively. Sotherton also set a Commonwealth record by 200 points. In 2007, the
World Championships were held in the
Japanese city of
Osaka. Sotherton started the first day with a personal best of 13.21 seconds in the
100 metres hurdles. She then came within a centimetre of her personal best in the high jump with a 1.86 m performance. A season's best of 14.14 m followed in the shot put and Sotherton ended the day with a second personal best in the
200 m, with 23.40. On the second day, Sotherton hit 6.68 m in the long jump, to stay in medal contention, but again the javelin saw a weak performance, with Sotherton throwing just 31.90, finishing last. However, Sotherton put in a strong performance in the 800 m, running 2:11.58 to just beat teammate Jessica Ennis to the bronze medal, with 6,510 points.
2008–09 In February 2008, Sotherton competed in a three-event triathlon, at the Indoor Grand Prix, in Birmingham, against a field including Carolina Klüft. Sotherton started with a below-par performance in the long jump, allowing Klüft to take the lead. Sotherton then won the 60 m hurdles in a personal best of 8.17 seconds. Despite running a personal best (and the fastest time by a Briton that season) of 52.47 seconds in the 400 m, Sotherton took second behind Klüft, who won by 18 points. After Klüft pulled out of the
World Indoor Championships in
Valencia, Sotherton became favourite for the gold medal. She lived up to expectation in the 60 m hurdles, winning in 8.25 seconds. However, Sotherton put in a below-par performance in the high jump, achieving only 1.81 m, against
Tia Hellebaut's 1.99 m., and Sotherton slipped to third and then to fifth after the shot put. Sotherton then won the long jump with 6.45 m, moving into second, behind Hellebaut, who set a Belgian record of 6.41 m. Hellebaut held a considerable lead entering the final event, the 800 m. Sotherton needed to beat the Belgian by 7.7 seconds to win gold. Sotherton set a personal best of 2:09.95, with Hellebaut collapsing over the line in 2:16.42, 6.47 seconds behind Sotherton, and the Briton had to again settle for silver. After Klüft's retirement from heptathlon in 2008, Sotherton had been tipped by many people to take gold at the
2008 Olympics, including Klüft herself. However, after a disappointing performance she could only manage
5th place in the competition.
Lyudmila Blonska was later disqualified for failing a doping test and Sotherton was upgraded to fourth. She had previously labelled Blonska a cheat, and questioned the validity of Blonska's silver medal at the World Championships in 2007. In December 2017
Tatyana Chernova was disqualified from 3rd place in the competition for doping, promoting Sotherton to the bronze medal. She was also part of the 4 × 400 m relay team which finished fifth in the final although the team was later upgraded to bronze medal position following disqualification for doping offences of the teams finishing in third and fourth place. Sotherton received her bronze medal from the 4 × 400 metre relay at the
London Anniversary Games on 21 July 2018 along with her teammates. She then received her second bronze medal from the Heptathlon two months later on 13 September at the
Team GB ball in London. The following year, Sotherton struggled with injuries and although she was selected for the
2009 European Indoor Championships she had to withdraw due to heel problems. Despite recovering from this injury, her 2010 season was also ruined by injury as her back problems recurred.
2011 Sotherton completed "the first step of her reinvention as a 400 m specialist", with a victory in the 400 m final in 53.46 sec, at the
English Institute of Sport - Sheffield indoor arena on 13 February 2011. Overcome at her win, she explained a temporary breakdown at trackside; " When I prolapsed the disc in my back it was career-threatening. I had to make a decision whether to end my career or try something new." It was Sotherton's first national title in a track event.
2012 On Sunday 27 May 2012, Sotherton announced her retirement from the sport after failing to recover from back surgery in time for the London 2012 games. ==Post-retirement==