A 177km GR 26 odyssey through the karst heartland of central Portugal
The flagship distance of the event covers 177.5 km and 6,193m of climbing across six municipalities in central Portugal's Terras de Sicó region, tracing the complete GR 26 long-distance trail and eight cultural heritage routes through karst valleys, ancient olive groves, and limestone ridges. Starting and finishing in Condeixa a Nova — gateway to the Roman ruins of Conímbriga — runners pass through the iconic Buracas do Casmilo valley, the Serra do Sicó ridge, and a chain of rural towns with two life bases and 12 aid stations. The 40.5-hour window means virtually all athletes experience multiple nights on course, and finishing qualifies runners for the Western States Endurance Run.
Experienced ultrarunners
Condeixa a Nova, Coimbra, PortugalJune 19, 2026
| Location | km | Elevation |
|---|---|---|
Start Start | 0.0 | 91 m |
Finish Finish | 177.5 | 91 m |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
Indoor 'hard floor' athlete sleeping available at the Municipal Pavilion of Condeixa a Nova (Thursday–Friday for 111 Miles athletes; Friday–Saturday for 60km athletes; Saturday–Sunday for 111 Miles and 111km finishers). Showers available at Condeixa a Nova Sports Hall after races.
Central Portugal in June can see daytime temperatures above 30°C, particularly in exposed valley sections with limited shade
Conditions can shift rapidly — warm days may be followed by cooler nights, especially on the Serra do Sicó ridge above 500m
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