Biathlon marathon
From Openwaterpedia
noun - A biathlon marathon is a solo endurance event comprises of a marathon swim and a marathon run done one right after the other.
Usage
Katie Benoit is attempting a biathlon marathon in Lake Memphremagog.
noun - A biathlon marathon is a solo endurance event comprises of a marathon swim and a marathon run done one right after the other.
Katie Benoit is attempting a biathlon marathon in Lake Memphremagog.