Examples of ultramarathons include the 37.3-mile Kepler Challenge in New Zealand and the 261-mile Spreelauf in Germany.

A marathon is 26.2 miles long, but the Spreelauf ultramarathon, at 261 miles, is far longer.

Ultramarathons range widely in length, from a few dozen miles to a few hundred.

While the Kepler Challenge is a one-day ultramarathon, the Spreelauf is a six-day ultramarathon.

English

PASSAGE:
While researching a topic, a student has taken the following notes:

• A marathon is a long-distance running race that is 26.2 miles long.
• An ultramarathon is a long-distance running race of more than 26.2 miles.
• The Kepler Challenge is a one-day, 37.3-mile ultramarathon in New Zealand.
• The Spreelauf is a six-day, 261-mile ultramarathon in Germany.

QUESTION: The student wants to make a generalization about ultramarathons. Which choice most effectively uses relevant information from the notes to accomplish this goal?