The Rutes de Mar (Sea Swimming Lanes) are a network of public open-water swimming routes on the Costa Brava for practising this sport safely because all the routes are marked with beacons and buoys.

• Route length: 1.2 km
• Estimated swim time: 18-30 minutes
• Difficulty: medium
• Maximum width: 200 m beach - 50 m rocks
• Users: swimmers, snorkellers
• Open season: June-October
• Water temperature: 14 oC - 25 oC
• Water salinity: 36-38 g/l
• Type of sea bed: rock - sand - sea grass
• Prevailing winds: south-easterly