3.5 mile run with some hills and some sprint intervals 5 times weekly, how will this

[tra'lala]

Burn fat and increase your stamina.
And of course there's muscle growth, but it really slow growth. That's why, people lift weights for better results of muscle growth and run for losing fat.

[tra'lala]

Burn fat and increase your stamina.
And of course there's muscle growth, but it really slow growth. That's why, people lift weights for better results of muscle growth and run for losing fat.

[Milkshake]

benefit me? I've been running now for a few months, up to 3.5 miles now 5 times weekly. How will this benefit me?? Will the hill running build muscle or what, will sprint intervals burn fat or build endurance?