Montepio Cascais Half Marathon
The Lowdown
Montepio Cascais Half Marathon is Portugal's AIMS-certified coastal half marathon, held annually in Cascais Bay just west of Lisbon. The 21.0975 km course starts and finishes on the Dom Luís I seafront promenade, tracing the Atlantic coastline out toward Guincho before returning along the bay to the Cascais Marina. Runners pass through pine-lined dunes, cliffside viewpoints, and the resort town's cobblestone streets, with the ocean visible for nearly the entire route. The event, organized by HMS Sports with Cascais City Council, also includes 10K and 5K races plus a kids' race, drawing thousands of Portuguese and international runners each winter. The 10th edition took place on 1 February 2026, after being rescheduled from its original January date due to a possible presidential election runoff. Known for its scenic but breezy Atlantic conditions, fast, mostly flat profile, and lively finish-line atmosphere at the Marina, Montepio Cascais Half Marathon has become one of Portugal's most popular winter road races.
Race Day
Weather Forecast
Elevation
Terrain Profile
Relatively flat course
Participants
Field Size
Medium-sized race
Crowd Rating
Spectator Support
Good crowd energy
Dom Luís I Seafront Promenade
the start/finish line on Cascais Bay
Cascais Marina
waterfront finish-area landmark with restaurants and yachts
Guincho Beach
wild Atlantic beach and dune stretch on the out-and-back coastal section
Estoril Coast Road (Avenida Marginal)
scenic coastal roadway shared with the 10K route
Cascais Citadel (Cidadela de Cascais)
historic fortress near the town's old center
Other distances available during the event weekend:
Cascais, Portugal
PT
Average rate for 3-star accommodations near the start line
Eligibility
- Open to Portuguese Athletics Federation members and non-members, including foreign nationals
- Minimum age 18 on race day for the half marathon
Required Documents
- Photo ID (passport or national ID)
Entry Methods
- Online Registration
Cancellation & Refund Policy
Registration fees are non-refundable; bib/chip may be transferred to another runner up to a set pre-race deadline
Organized by HMS Sports with support from Cascais City Council and CCD Cascais.
The 2026 (10th) edition was moved from its originally planned January weekend to 31 Jan-1 Feb 2026 due to the possibility of a presidential election runoff.
Race weekend expo is held at Nova School of Business and Economics in Carcavelos.
Bib and timing chip transfers to another runner are allowed up to a set deadline before race day; registration fees themselves are non-refundable.
Montepio Associação Mutualista members receive a discounted registration rate via promo code.
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