21K
Half marathon, 21.1 km
The main distance, certified by the Portuguese Athletics Federation. A fast course along the Atlantic shore.
Certification · Portuguese Athletics Federation
2,423 registered in 2026
Flat, with the sea alongside all the way.
7,272 people from 69 countries ran it in 2026.
to the start
The 2026 edition in numbers
Half marathon, 21.1 km
The main distance, certified by the Portuguese Athletics Federation. A fast course along the Atlantic shore.
Certification · Portuguese Athletics Federation
2,423 registered in 2026
Ten kilometres
The distance that combines a beautiful course with speed. For new runners and for those chasing a personal best.
1,864 registered in 2026
Charity walk, 5 km
The charity walk in support of the Portuguese League Against Cancer, Northern Regional Branch. No timing, open to everyone.
2,985 participants in 2026
Prices coming soon
Entries open soon
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The Gaia Half Marathon 2027 is run with the support of these brands and institutions. The 2027 partners are being announced over the coming months, with Gymstar as the first confirmed Gold Sponsor.
What is happening on the road to the Gaia Half Marathon 2027, from confirmed partners to the results of those who have already run it.
Registration is done on the Global Sport platform. You need to create an account, choose your distance and pay. It takes three steps and less than five minutes.
Yes. The platform asks for an account before it accepts your registration. If you have already run another Global Sport race, sign in with the details you already have.
The transfer conditions are set out in the official rules. Once they are published, they will be available on the rules page.
The insurance conditions are set out in the official rules. Once they are published, they will be available on the rules page.
The medical requirements are set out in the official rules. Once they are published, they will be available on the rules page.
Registration closes when all places are taken or on the deadline of the last phase. Register early: the price goes up with each phase.