1El Chollín (Choyín) River: free hot river
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Rivers, swimming holes, simple hot springs and the national park trails, all with no ticket or under $25
For travellers on a tight budget, or anyone filling the gaps between expensive tours. There are three levels of spending. No entry fee: El Chollín (Choyín) River, El Salto, La Fortuna central park and church, Sangregado Dam and the Iguana bridge (Muelle). Cheap: Termalitas del Arenal and El Silencio viewpoint, at about $10, and Los Laureles hot springs, at ₡5,000. Under $25: the national park, the self-guided Bogarín Trail, La Fortuna Waterfall and Río Celeste.
A full day covers a fair amount. Start in the morning at Arenal Volcano National Park (Volcano sector), when the cone is more often clear, and arrive before 14:00. Its trails are short, so the afternoon leaves room for the waterfall, with last recommended entry at 16:00, or El Chollín, which is for daylight hours only. End the day at Termalitas or Los Laureles. If you are heading west, the dam is on the way to the Peninsula sector, a good place for sunset over the lake.
With a second day, Río Celeste and Tenorio Volcano National Park is the long trip: about 73 km by road and around 3 hours on the trail. If money is tight, stick to the free places and an afternoon of hot springs; El Salto is under 2 km from the central park. If time is short, skip Río Celeste and the iguana bridge, about 28 km east, which is only worth it if you arrive or leave on that side.
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Day-pass hot springs, from best known to lesser known, ranging from the resort with a hot river to the free river. One of them only admits guests.
Activities around the volcano. Most require a minimum age of 8 and include transport from town.
All the permitted walks around Arenal, from the national park to private reserves, and the best spots to see the cone and the lake.
Tours under cover or that don’t need a clear sky, and night outings to see frogs, snakes and sloths.
Places 1 to 2 hours away by road that you can visit and return from in a day, on your own or with a tour.
Places that still appear in old guides or on social media but cannot be visited today, or only under conditions; each one says what to do instead.