Adverbs frequently end in-ly; however, many words and phrases not ending in-ly serve an adverbial function and an-ly ending is not a guarantee that a word is an adverb.
Lance Armstrong's strength and endurance sometimes seem too extraordinary to be believed. Armstrong, a six-time winner of the Tour de France bicycle race who next month will try for his seventh straight victory, can cover 32 miles, or 50 kilometers, in one hour of riding. In contrast, the average cyclist covers 16 miles; a top marathon runner can cover 21 miles on a bike. Armstrong can ride up the mountains in France generating about 500 watts of power for 20 minutes, something a typical 25-year-old could do for only 30 seconds.
The fastest massed-start stage was in 1999 from Laval to Blois (194.5 km), won by Mario Cipollini at 50.4 km/h. The fastest time-trial is Rohan Dennis' stage 1 of the 2015 Tour de France in Utrecht, won at an average of 55.446 km/h (34.5 mph). The fastest stage win was by the 2013 Orica GreenEDGE team in a team time-trial. It completed the 25 km time-trial at 57.7 km/h.