Mo Farah says he could line up in the 10,000m at October's World Championships in Doha.
The four-time Olympic gold medallist was speaking after retaining his Big Half title in London, his last competitive outing before next month's London Marathon.
When asked about the World Championships, the 35-year-old told the BBC, "It's possible. After the marathon, I'll make a decision about what I want to do.
"Deep down, I miss the track. I look at my fellow athletes and I think 'Woah' and I just get excited."
Farah quit the track after the 2017 World Championships in London to pursue his marathon aspirations.
Back at the Olympic Stadium where he won double gold in 2012, Farah claimed his third 10,000m world crown but just missed out on a fourth consecutive 5,000m title.
On track for London
The Big Half saw the field run a half-marathon distance from Tower Bridge to the famous ship Cutty Sark in Greenwich, in the opposite direction to one of the early sections of the London Marathon.
In blustery and wet conditions far from ideal for running, Farah was seen holding his stomach in the early stages which he said afterwards was due to "a little cramp".
He soon recovered and led with his training partner and fellow Somali-born athlete, Belgium's Bashir Abdi, and Daniel Wanjiru of Kenya.
And in trademark fashion, Farah produced a powerful sprint to take victory in 1:01.15 ahead of Abdi with Wanjiru taking third.
Charlotte Purdue retained the women’s title in a time of 1:10:38, beating British team-mates Stephanie Twell and Charlotte Arter.
But the focus was on Farah who will now return to Ethiopia for training before taking on defending Olympic champion and world record holder Eliud Kipchoge at the London Marathon.
Farah said, "Conditions were a bit tougher than last year here but it was nice. I got the job done, came first and now I'm preparing for the London Marathon and it's a nice stepping stone.
"I'm excited. I feel like I have more experience than last year. I've got to go out and do the best I can, but I know I can mix it with the guys.
"I’m definitely a better athlete than I was last year but it's going to be one of the toughest races of my life." - Mo Farah talking to Athletics Weekly about April's London Marathon