Lance Armstrong has hinted he could attempt to break the world hour record at Manchester Velodrome this season.
Armstrong has long professed a desire for the world hour record
The six-time Tour de France winner has repeatedly stated a desire to break the mark of Britain's Chris Boardman.
The American legend told Cyclingnews that the obvious place to attempt a record was Manchester, "where it has been done several times in the past."
But the 33-year-old Texan added that making the attempt at altitude remained his preferred option.
Riding at altitude has the benefit of less resistance, although less oxygen is available.
"I think the trick with the hour record is where you do it," said Armstrong.
"Obviously we can do it in Manchester where it's been done several times.
"We want to do it at altitude and it's just a question of where we go, what we find and if we build a velodrome to do it.
"And I think that's probably the most likely scenario as of today - do we want to cover Colorado Springs and resurface it or do we go to Salt Lake City or somewhere like that and build a new velodrome?"
Boardman's record stands at 49.441km, which he set in Manchester on 27 October, 2000.
The altitude hour record belongs to Eddy Merckx, who covered 49.43915km in Mexico City in 1972.