Hi there
64 years old and doing C25K on the treadmill mainly because the roads outside are really rural and it gets dark quickly. Now on week 7 R1.Just completed and feeling exhausted but good (if that makes sense) Hearing everyone talk about running outside I am beginning to feel a bit of a fraud!! I will do a park run in the summer and have already looked one up but is it OK to graduate using a treadmill??