also: ランニングマシーン
noun
A machine for running or walking indoors, commonly found in gyms and homes.
from English running machine
毎朝ランニングマシンで30分走っています。
I run on the treadmill for 30 minutes every morning.
このジムには新しいランニングマシンが10台あります。
This gym has ten new treadmills.
Also means 'treadmill', but ランニングマシン is more common in everyday Japanese.
Loanword from English 'running machine'.