The trails are not marked but there is an incredible network of trails with singletracks, fire roads, long climbs, technical descents, etc. The best trails in Portugal and only 30 minutes drive from Lisbon.

Sintra Trail & Enduro MTB - Lisbon Coast Cottages
GETTING THERE
Start at Malveira da Serra, a small town that is 5 miles from Cascais. Cascais is 30 minutes drive from Lisbon (airport).
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Level:
Length: 25 mi (40.2 km)
Surface: Other
Configuration: Network
Elevation: +350/349 ft
Total: 28 riders