Miler (noun)

A person who runs the mile, a distance of approximately 1609.34 meters or 1.609 kilometers, competitively or as a sport.

Origin:

Compound word formed by mile + er, meaning someone who runs a mile.

Examples:

1. The miler ran the race in four minutes.
2. She was a top miler in high school.
3. He was considered one of the best milers in the country.
4. The miler trained hard to improve his time.
5. The miler set a new record in the race.