Dr Couldrey finished well inside the 76 hours required to qualify for the Race Across America, which had been her goal, but said she was unsure whether she would be able to go to America next year because money would be a limiting factor.
She said next year she hoped to be back at the cycle challenge, although perhaps not for quite as long.
"Four laps is looking pretty appealing now."
Dr Couldrey, the only woman among five extreme enduro cyclists this year, was one of 8214 cyclists who flocked to Taupo for this year's challenge, including 600 mountain bikers and about 2500 relay riders.
In the elite sections of the event, the 160km men's classic race was won by recent Tour of Southland winner Mike Northey in 3:45,15 while Rushlee Buchanan lowered the record for the 100km OPI women's road race by 10 minutes, finishing in 2:44.50.