Jessica Ennis-Hill insists there is no chance of her continuing her career beyond the 2017 World Championships in London.
The Olympic heptathlon champion is building up to the defence of her title in Rio and admits she could hang up her spikes after August's event in Brazil.
"I think at the moment I'm just focused on Rio and being the best prepared I can and going out there and seeing what I can do," said the 30-year-old, who is recovering from an Achilles injury which ruled her out of the indoor season.
"And then it's going to be a decision to make after Rio for me - whether I decide to retire after Rio or whether I decide I want to do one more year and go to the World Championships and retire after that. But I definitely won't be going on any longer than 2017."
The Sheffield athlete will head to Rio as the reigning world champion after her astonishing comeback victory in Beijing last summer when she took gold in only her second heptathlon since London 2012 and just 13 months after the birth of her son Reggie.
Jessica Ennis-Hill won gold again in 2015, this time at the Sportswomen of the Year awards on Friday evening.
The Olympic heptathlon champion returned from giving birth to her first child to land World Championship gold in Beijing in August.
Ennis-Hill said: "When I think back to the year it has been incredibly hard. Just adjusting to life as a mum and having those amazing experiences, and coming back into training and reaching the top of my career again, it's been absolutely incredible. I really didn't think I would win the gold medal."
England's hockey side were named Team of the Year.They came from 2-0 behind to force a penalty shoot-out in which they beat Holland to take the EuroHockey title in August.
Jessica Ennis-Hill has won gold in the women's heptathlon at the World Championships in BeijingRead the full story ›
Jessica Ennis-Hill lay in gold medal position after three events of her heptathlon as she made a strong return to the global stage at the World Championships in Beijing.
The Olympic champion, in her first major championship since London 2012 and 13 months after the birth of her son Reggie, was on 2,968 points, 34 clear of Belgium's Nafissatou Thiam.
Team-mate and rival Katarina Johnson-Thompson was also going well, despite dropping down to ninth on 2,854 after the shot put, her weakest event.
Jessica Ennis-Hill and Katarina Johnson-Thompson towered over their World Championship rivals after the opening two events of the heptathlon in Beijing.
Ennis-Hill, in her first major championship since London 2012 and 13 months after the birth of her son Reggie, clocked 12.91 seconds over the 100 metres hurdles.
She equalled her season's best of 1.86m in the high jump to lead the way on 2192 points.
Johnson-Thompson lay in second place, 30 points behind her team mate.
The 22-year-old ran a personal best of 13.37secs in the 100 metres hurdles, and was the only athlete to clear 1.89m in the high jump.
Jessica Ennis-Hill is frustrated by the sight of drug cheats returning to the pinnacle of athletics after serving bansRead the full story ›
Jessica Ennis-Hill will compete in her first major championship since London 2012 after deciding to go to the World Championships in Beijing next month.
The Olympic heptathlon champion passed the acid test of her fitness at the Sainsbury's Anniversary Games last weekend with flying colours, recording her best performances since the Olympics in the 100 metres hurdles, long jump and 200m.
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Olympic champion Jessica Ennis-Hill has announced on her Instagram account that she is making herself available for selection for the World Championships in Beijing.
Jessica Ennis-Hill has earned the right to defend her heptathlon title on her comeback to the sportRead the full story ›
Olympic champion Jessica Ennis-Hill has announced she will compete in her first heptathlon since London 2012 in Gotzis at the end of May.
The 29-year-old, who made her return to athletics in the last couple of weeks, has been struggling with a troublesome Achilles injury.
After competing in Loughborough at the weekend I felt pretty good the next day and my Achilles felt fine which is brilliant.
The results I have had at the competitions over the past few weeks are promising and we believe it is feasible for me to do a full heptathlon and achieve the level of points I need to qualify for Rio.
If I can achieve this early in the season it removes a real pressure, and all the indicators are looking positive, so I plan to go to Gotzis and give it my best shot.