Best sun protection for Alto Rey Trail

The summer solstice is the longest day of the year. Altitude (up to 1,850m) intensifies UV radiation. Sun protection is essential.

Topical sun protection products specific to trail running: SPF 50+ sport sunscreen resistant to water and sweat, SPF lip balm and after-sun for recovery. At altitude, UV radiation increases by 10-12% per 1,000 metres, making sun protection not an extra but mandatory gear.

Recommended products

ISDIN

Race pick

ISDIN Fotoprotector Fusion Water SPF 50+

★★★★½ 4.7

Ultralight water-phase facial sunscreen with SPF 50+. Fluid texture that absorbs instantly with no greasy residue, ideal for applying during a race. Water and sweat resistant.

Strengths

+ Ultralight texture, feels invisible on skin
+ Sweat and water resistant
+ Instant absorption, ideal for mid-race reapplication
+ SPF 50+ with UVA/UVB protection

Watch out for

− Small format (50 ml), may run short on ultras
− Higher price than conventional sunscreens

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Piz Buin

Race pick

Piz Buin Mountain SPF 50+

★★★★☆ 4.4

Mountain sunscreen with SPF 50+ formulated for extreme altitude conditions. Extra protection against intensified UV radiation and cold wind. Rich texture that protects skin from dehydration.

Strengths

+ Specifically formulated for altitude and cold
+ Protects against wind, snow and sun simultaneously
+ Good value for money
+ Available in compact 20 ml format for backpack

Watch out for

− Thicker texture, takes longer to absorb
− May leave white residue on darker skin

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Sun Bum

Race pick

Sun Bum Sunscreen Lip Balm SPF 30

★★★★½ 4.5

Lip balm with SPF 30 sun protection in stick format. Moisturises and protects lips from sunburn, a spot many runners forget. Coconut flavour, paraben-free.

Strengths