Will training on the treadmill help me keep my running fitness?
Question
Will training on the treadmill during the winter (or bad weather) help me keep my running fitness?
Answer:
This is why we have treadmills 
. Most runners want to run outside and enjoy the view and fresh air. But if you live in a big city or is winter you cannot enjoy all these. The treadmill is the perfect solution for runners that don’t have the outside option. So the answer to your question is a big yes.
A good machine comes with some built in workouts or several “games” like virtual opponents or maps to show your progress. Running on a treadmill is not as fun as running outside but it can sustain your fitness level in the same way.
