Let's be honest, running anywhere at any time is hard. But running outside in the winter? That’s some next-level dedication right there.

Of course, that task becomes a lot easier when you have the right winter running gear to get you through the frigid weather. But what exactly do you need to throw on when temps start to dip below 50 degrees—and what the heck do you wear when it's 20 degrees?

Outdoor workout pros have some strong opinions when it comes to choosing outfits for clocking long runs in the cold.Usethis quick reference guide, courtesy of Hollis Tuttle, senior coach at Mile High Run Club in New York City, to layer up:

40–49 degrees: A long sleeve shirt with shorts or leggings

30–39 degrees: A long sleeve shirt with leggings, gloves (optional), and a headband or hat to cover your ears (optional)

20–29 degrees: A long sleeve running shirt layered with a jacket, leggings (potentially thermal),gloves, and a headband or hat to cover your ears

10–19 degrees: A long sleeve running shirt layered with a jacket, thick or fleece-lined leggings,gloves, a headband or hat to cover your ears, and winter running shoes.

0–9 degrees: Two layered workout shirts, a windbreaker jacket, thermal leggings, gloves, a headband or hat, a ski mask or layer to cover your face

Now that you know exactly what the ideal wardrobe for logging miles in the chilliest of temps looks like, use this list of the best winter running gear to make sure your layer game is on-point. Every hat, glove, and more on this list is tested and trusted by top running experts and Women's Health editors themselves. You're guaranteed to feel toasty and motivated, even as temperatures drop way, way down.