I have participated in many half marathons.

The half-marathoners crossed the finish line with smiles on their faces.

She is a dedicated half-marathoner, training every day for her next race.

I have participated in many half-marathons.

I am training for a half-marathon.

Marathon County is located in central Wisconsin.

The race was marathonlike in its length and intensity.

I am training for the marathon.

The marathonitids are small marine crustaceans.

The marathonist crossed the finish line with a new personal record.