Cascais · Oeiras · Lisboa · 8 November 2026

RUN THE COAST. DISCOVER THE MARGINAL.

21.097 km of Atlantic coastline. From Estoril through Oeiras to Belém, discover one of Portugal’s most memorable seaside courses.

THE ROUTE

From the Atlantic to Belém.


The Half Marathon begins at Casino Estoril and follows the coastal axis through Oeiras before finishing at Praça do Império in Belém. The 10K starts at Praia de Santo Amaro in Oeiras and shares the final kilometres toward Lisboa.

Half Marathon start Casino Estoril

Estoril, Cascais.

10K start Praia de Santo Amaro

Oeiras.

Finish Belém

Praça do Império, Lisboa.

Surface Road

A predominantly flat, point-to-point coastal course.

COURSE OVERVIEW

Two distances. One Marginal.

21.097 KM Marginal Half Marathon
Cascais → Oeiras → Lisboa
Marginal Half Marathon course diagram from Casino Estoril to Praça do Império in Belém
10 KM Marginal 10K
Oeiras → Lisboa
Marginal 10K course diagram from Oeiras to Praça do Império in Belém

INTERACTIVE MAP

Explore the course

Half Marathon · 10K

ELEVATION PROFILE

Half Marathon profile

21.097 km
Elevation profile of the Marginal Half Marathon
🌊 Atlantic scenery

Run beside the ocean and the Tagus estuary for much of the route.

Fast profile

A road course designed for rhythm, performance and scenic running.

🏛 Historic finish

Finish in Belém, surrounded by some of Lisboa’s most emblematic landmarks.

🏙 Three partner cities

Cascais, Oeiras and Lisboa come together through one coastal event.

COURSE INFORMATION

Key facts

Half Marathon 21.097 km
10K 10 km
Surface Asphalt road
Course type Point to point
Half Marathon start Casino Estoril
10K start Praia de Santo Amaro
Finish Praça do Império · Belém
Course character Predominantly flat coastal road

Choose your distance.

Register now