Best sun protection for KM Vertical Fuente Dé

June in Picos de Europa: intense sun above 1,500m altitude.

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+

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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Sun Bum

Race pick

Sun Bum Sunscreen Lip Balm SPF 30

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

+Stick format easy to apply mid-race
+Fits any backpack pocket
+Moisturising and protective at the same time
+Paraben and PABA free

Watch out for

−SPF 30 may fall short at extreme altitude
−Melts if left in direct sun

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Piz Buin

Piz Buin Mountain SPF 50+

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