Most of us reach for a bottle of sun cream before heading out for a run, but there’s actually something even better at protecting your skin from harmful rays.
Sun protective clothing can block up to 98% of UV rays, and unlike sun cream, it won’t sweat off, wear thin, or need topping up halfway through your run. Since runners spend so much time outdoors in direct sunlight, protecting your skin matters more than most people realise. Here’s everything worth knowing before choosing your next piece of sun-safe running gear. The more you know about the best products to choose and how they work, the better choices you’ll be able to make.
Clothing beats sun cream as your main defence.
A dermatologist who’s also a serious long-distance runner says she wears both sun cream and long sleeved sun protective clothing all year round, even in warm weather, which often surprises her patients. Unprotected sun exposure remains the biggest cause of skin cancer and premature skin ageing, and while sun cream still matters, clothing offers the strongest layer of protection available.
This makes sense when you think about how easy it is to miss a spot with sun cream, or forget to reapply it once you’ve started sweating heavily. Clothing simply stays in place and keeps working the entire time you’re wearing it, without needing any extra thought once you’ve got it on.
Understanding what those UPF numbers actually mean
You’ve probably seen SPF numbers on sun cream bottles, but clothing uses a different measurement called UPF instead. Rather than measuring how long it takes skin to burn, UPF measures how much UV radiation manages to pass straight through the fabric and reach your skin underneath.
A UPF fifty garment blocks around 98% of UV rays, offering excellent protection, while anything rated between UPF 30 and 49 still gives decent protection and meets the standard needed for official safety recommendations. Generally speaking, the higher the number, the safer your skin will be underneath it.
How much skin you actually cover matters a lot.
It’s hard to run comfortably in full sleeves or long tights once the weather warms up, but covering more skin does mean stronger overall protection and less area you need to worry about covering with sun cream instead. Loose, breathable long sleeves can still work well even on warmer days if you want extra coverage without overheating.
Sticking to shadier routes with plenty of tree cover, or timing your run for earlier or later in the day, can also help reduce how much direct sun you’re exposed to overall. Combining a few of these habits together tends to work far better than relying on just one alone.
Darker colours actually protect you better.
It might seem backwards, but darker and brighter coloured fabrics actually protect your skin better than pale, light coloured ones. Darker fabrics absorb or reflect UV rays rather than letting them pass straight through to your skin underneath.
Light coloured or slightly see through fabrics, like a thin white cotton shirt, let far more UV rays through, meaning your skin gets far less protection even though it feels like you’re covered. If you’re choosing between two options, the darker one is almost always going to serve you better under strong sun.
Fit and fabric type make a bigger difference than you’d think.
Loose fitting clothing tends to be more comfortable in the heat, but it also protects your skin better, since fabric that isn’t stretched tight allows far less light to filter through. Fabric material matters just as much as fit, since tightly woven fabric generally blocks more UV rays than loosely woven material.
A basic cotton t-shirt on its own only offers protection roughly equal to SPF seven, and even less once it gets wet from sweat. Synthetic fabrics like nylon tend to offer far stronger, more reliable protection than natural fabrics like cotton or linen, especially once they’ve been washed a few times.
It’s important to choose gear that actually works for your runs.
Good sun protective running gear should ideally sit at UPF forty or higher, offer decent skin coverage, and still feel comfortable and breathable enough to actually wear on a hot day. It’s no good having brilliant sun protection if the gear itself is too uncomfortable to run in properly.
Options to consider include lightweight long sleeve tops with built-in UPF protection, running shorts with UPF rated fabric, detachable sun sleeves you can slip on and off mid-run, and wide brimmed running hats or caps that shield your face, neck, and ears from direct sun. Polarised sunglasses should also be added into the mix, since they protect your eyes from UV rays while cutting down glare at the same time.
Cloudy days still require protection.
It’s easy to assume cloudy or overcast weather means you can skip sun protection altogether, but that’s actually a common and fairly risky mistake. Up to eighty percent of UV rays, especially the type linked to premature ageing, can still pass straight through cloud and fog without you even noticing.
A day that starts out grey and cloudy can easily turn sunny by the afternoon, which is exactly why you should protect your skin regardless of what the sky looks like when you head out. Water and snow can also reflect UV rays back onto your skin, adding even more exposure than you might expect in certain conditions.
Year round protection matters for every skin type.
There are two main types of UV rays worth knowing about. One type causes visible sunburn and tends to be strongest during warmer months, while the other contributes to premature ageing and skin damage all year round, even during winter or on overcast days.
While people with fairer skin do face a higher risk of sun damage, nobody is fully protected from UV rays regardless of their skin tone. Building sun protective habits into your running routine year round, rather than just during summer, makes a difference to your skin’s long-term health.
