The news comes one day after Armstrong announced his return to cycling after a three-year break.
Andrew Messick is president of AEG Sports which operates the Amgen Tour. He says they’re re-evaluating the logistics of the race now that Armstrong’s involved.
"We will need to have a different level of everything. We think there’s going to be more media, we think there’s going to be more people on the side of the road. And we need to make sure that we are organized to be able to maintain the unique nature of our race."
The 37-year-old Armstrong says he chose Amgen because of the race’s level of competition and because of Amgen’s record of supporting cancer awareness and research.
The nine-day race starts on February 14th in Sacramento and covers more than 800 miles - winding through Davis, Modesto, Merced and 12 other California cities.