White-Water Outfitters

Costa Rica Ríos. Specializing in weeklong rafting, kayaking, and canoeing excursions on the Pacuare and Pejibaye rivers, this outfitter has rafter-to-guide ratios of no more than 5:1. 50 m north of central park, Turrialba, Cartago, 30501. 2556–8664; 888/434–0776; www.costaricarios.com. Excursions from $1,899/week.

Ríos Tropicales. Long-established outfitter Ríos Tropicales begins and ends its Pacuare and Reventazón white-water excursions in San José with the option to overnight on the Pacuare. Rafter-to-guide ratios don't exceed 5:1. 50 m north of Centro Colón, Paseo Colón, San José, San José, 10103. 2233–6455; 866/722–8273; www.riostropicales.com. From $96.