Wellington is unbeaten over the Ironman distance
Chrissie Wellington is confident she is over recent illness and fully fit for Sunday's Arizona Ironman race.
A combination of pneumonia, strep throat and West Nile virus saw her pull out of her bid for a fourth consecutive Ironman World Championship title.
"It took a while to get back to full health, I'm pleased to say I think I'm there," the 33-year-old from Feltwell told BBC Radio Norfolk.
"I feel healthy, I feel confident and I'm really looking forward to racing."
She added: "I made the call that I didn't think I was healthy enough to do myself justice and I'm really happy I made that call."
Wellington's bike was racked, ready to compete in October's annual Ironman World Championships in Hawaii, but the pre-competition favourite pulled out at the last moment.
Now she is set to return to action in Tempe in the United States looking to defend her 100% winning record in Ironman competitions.
"It is an incredibly strong field, probably the strongest that will line up outside of Kona (Hawaii)," said Wellington, who is based in Boulder, Colorado.
"We've got a couple of other British athletes racing - Leanda Cave and Rachel Joyce - both of those were in the top 10 in Kona.
"So it's going to be great to line-up against them and maybe you might even see a one, two, three for Britain which would be fantastic."