Read the excerpt from Chapter 4 of Wheels of Change. Annie Londonderry wasn't the only one who pushed the limits of time and distance on her two-wheeler. In the late 1890s, several women took the concept of riding a century—100 miles—to the extreme by peeling off two, three, four, or more centuries in a row. Perhaps the greatest female century rider performed outside the spotlight. Dora Rinehart’s exploits hardly ever were reported beyond the western United States, where the Colorado native earned the title “America’s Greatest Cyclienne.” Rinehart took up the bicycle to regain her strength after suffering scarlet fever. She started with short rides, but quickly built up her endurance. In 1896 alone, she pedaled 17,196 miles, more than any other woman in the United States. That included stretches of 10 days in July and 20 days from October 31 through November 19 when she rode a century every day.

Which statement from the excerpt is subjective?