マラソン

まらそん
noun
marathon
1. marathon
A long-distance running race of 42.195 kilometers (26.2 miles).
I'm going to participate in next year's marathon.
My dream is to finish a marathon.
Thirty thousand people run the Tokyo Marathon every year.

マラソン is a loanword from English "marathon," referring to the 42.195km race.

COMMON EXPRESSIONS:

JAPAN CONTEXT:
The Tokyo Marathon is one of the World Marathon Majors. Japan hosts many city marathons year-round, and running culture is popular.

FIGURATIVE USE:

マラソン can describe any long, endurance-based activity: