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.
On land, the speed record registered by a rider on a 200-meter flying start speed trial was 133.28 km/h (82.82 mph) by the Canadian Sam Whittingham riding the Varna Tempest, a streamliner recumbent bicycle in 2009.