Pick your level and enjoy the ride! Savegre River: 5 hours. class 2 and 3, great for beginners. children under 7 will have to be approved by the guide. 1-hour rafting. swim at a waterfall, light lunch on the river. then, another hour of rafting. Coto Brus river: 9 hours. class 3 and 4 no children. 1.5-hour wild ride, then lunch, followed by 2 more hours of rafting!