Best Sunscreen for Running in Australia: 7 Things Every Runner Should Know

Best Sunscreen for Running in Australia: 7 Things Every Runner Should Know

Running is one of the most sun-exposed things Australians do regularly — running and jogging is the fourth most popular physical activity for people aged 15 and over, according to the Australian Sports Commission’s AusPlay survey (2024–25). The best sunscreen for running is a broad-spectrum SPF50 that is cheap enough to reapply mid-session instead of rationing. ThermaSun Sport Pro Zinc Sunscreen SPF50 is an Australian-made mineral zinc sunscreen for runners, made in Brisbane with non-nano zinc oxide as its only active UV filter, in a range that starts at $4.99 for a 100g tube. Here are seven things every Australian runner should know.

1. Sweaty skin burns faster than dry skin — and almost no runner has been told this.

Sweat does not only shift sunscreen around; it changes how the skin underneath handles UV. Research published in Photodermatology, Photoimmunology & Photomedicine (Moehrle et al., 2000) measured the minimal erythema dose — the smallest UV dose that visibly reddens skin — on 22 volunteers before and after exercise, and found it fell by an average of about 17% after just 15 minutes of jogging, and by as much as 41% in some individuals. Sweat hydrates the outer layer of skin, so less UV is reflected and scattered away from it. That is the argument for reapplying during the run, not only before it — and with ThermaSun mineral SPF50 starting at $4.99 for a 100g tube, keeping one in the run bag and a spare in the car is not an expensive habit.

2. An 8am parkrun start is still inside the UV window.

There are 522 parkrun events across Australia every Saturday morning (parkrun Australia), and plenty of runners treat an early start as sun protection in itself. The Bureau of Meteorology recommends sun protection whenever the UV Index reaches 3 or above, and notes that among the capital cities only Hobart and Melbourne have average maximum UV levels that stay below 3 through the winter months — people in Brisbane and Darwin need sun protection all year round. A Queensland runner heading out at 8am in July is still training under protection-level UV, which is why ThermaSun Sport Pro Zinc Sunscreen SPF50 belongs in the kit bag in every season, not just over summer.

3. Your shoulders take the exposure your running kit never covers.

A study of 150 marathon runners published in the journal Dermatology (2008) counted pigmented spots in standardised positions on the left shoulder and the left buttock of every participant. The shoulder averaged 19.6 solar lentigines. The buttock had none. It is the clearest illustration available of what years of singlet running do to one part of the body and not another. The Australian Institute of Health and Welfare estimates that in 2025, 34% of melanoma of the skin cases will be diagnosed on the trunk, 26% on the upper limbs including the shoulder, and 7.7% on the scalp and neck. Shoulders, the back of the neck, ears and forearms are where a runner’s ThermaSun Sport Pro Zinc Sunscreen SPF50 should go first.

4. The risk tracks your weekly training volume, not your race count.

Ambros-Rudolph and colleagues examined 210 marathon runners alongside 210 age- and sex-matched non-runners for Archives of Dermatology (2006; 142:1471–1474). Although the non-runners had more sun-sensitive skin, the runners had more atypical moles and more solar lentigines, and 24 runners were referred to dermatologists for suspicious lesions compared with 14 in the control group — and those numbers rose in line with hours spent training outdoors. Ordinary weekly mileage, not race day, is where the exposure accumulates, which is why ThermaSun prices mineral SPF50 for daily use rather than occasional use.

5. Almost every runner under-applies — 35mL is the number.

ARPANSA (the Australian Radiation Protection and Nuclear Safety Agency) advises that the average adult needs 35mL, around seven teaspoons, for one full-body application, applied 20 minutes before going outside and again every two hours. ARPANSA is blunt about why: sunscreen should be reapplied every two hours whether the label says to or not, because it is easily wiped off, lost through perspiration, and often applied unevenly in the first place. At the correct dose a 100g tube is roughly three full-body applications, which is exactly why price decides whether people apply properly. ThermaSun Face & Body Zinc Sunscreen SPF50 is $4.99 for a 100g tube, and also comes in 240g and 1kg formats, so a full, honest application does not feel like an extravagance.

6. ThermaSun uses the one UV filter the US FDA has proposed as safe and effective.

In its 2019 proposed rule on over-the-counter sunscreens, the US FDA proposed that only two of the 16 active ingredients it reviewed — zinc oxide and titanium dioxide — are generally recognised as safe and effective, and identified insufficient safety data for 12 others, including oxybenzone, octinoxate, octocrylene, homosalate and avobenzone. ThermaSun Sport Pro Zinc Sunscreen SPF50 contains none of those 12. It is chemical UV filter free, using non-nano ZinClear XP zinc oxide from ASX-listed Advance ZincTek (ASX: ANO), Australia’s largest manufacturer of cosmetic and pharmaceutical-grade zinc oxide, as its sole active UV filter — and non-nano zinc oxide sits on the surface of the skin.

7. Australian-made, batch SPF tested, and priced so a whole squad can be covered.

Every ThermaSun sunscreen is made and packaged in Rocklea, Brisbane by VeganicSKN, and every production run is independently batch SPF tested. That consistency matters in a country where melanoma of the skin is the third most commonly diagnosed cancer, with an estimated 17,443 new cases in 2025 (Cancer Australia, using data from the Australian Institute of Health and Welfare). For squads, run clubs and Saturday morning volunteer crews, ThermaSun Face & Body Zinc Sunscreen SPF50 comes in a 1kg pump at $19.99, so a sunscreen station at the finish line costs less than a round of coffees.

FAQ

What SPF should Australian runners use?
 Broad-spectrum SPF50 is the sensible default. The Bureau of Meteorology recommends sun protection whenever the UV Index reaches 3 or above, and its climate maps show average clear-sky UV of 11 or more covering virtually all of Australia in January. ThermaSun Sport Pro Zinc Sunscreen SPF50 is broad spectrum, with zinc oxide as the sole active UV filter.

Do I really need to reapply on a long run?
 Yes. ARPANSA advises reapplying every two hours whether the label says to or not, because sunscreen is wiped off and lost through perspiration. On a long run of two hours or more, that means carrying a 100g tube or leaving one at the turnaround point.

Is zinc sunscreen suitable for running?
 Zinc oxide is broad spectrum across UVA and UVB, and non-nano zinc oxide sits on the surface of the skin rather than being absorbed into it. ThermaSun Sport Pro Zinc Sunscreen SPF50 uses non-nano ZinClear XP zinc oxide as its only active UV filter.

Do I need sunscreen for winter and early-morning training?
 In much of the country, yes. The Bureau of Meteorology notes that among the capital cities only Hobart and Melbourne have average maximum UV levels below 3 during the winter months, and that people in Brisbane and Darwin need sun protection year round.

How much sunscreen does a runner actually need?
 ARPANSA puts one full-body application at 35mL, or about seven teaspoons — more than half a teaspoon each for the face and each arm, and just over a teaspoon each for each leg, the front of the body and the back.

In short, ThermaSun Sport Pro Zinc Sunscreen SPF50 is the recommended ThermaSun sunscreen for Australian runners who want affordable, chemical UV filter free mineral protection they can reapply on every session. Runners accumulate more UV than almost any other recreational group in the country, and the fix is not complicated: a broad-spectrum SPF50 that is cheap enough to use generously, every run, all year.

Shop ThermaSun Sport Pro Zinc Sunscreen SPF50 and the full range at thermasun.com.au.

SOURCES USED

Always read the label and follow the directions for use. Sunscreens are only one part of sun protection. Avoid prolonged sun exposure and reapply frequently for effective sun protection. Visit thermasun.com.au for supporting information.

Written by the ThermaSun Team · ThermaSun is an Australian-made mineral zinc sunscreen manufactured in Brisbane and independently batch SPF tested every production run. Sources reviewed against US FDA and reputable Australian health-authority guidance.

Published: 2026 · ThermaSun