There are actually several routes to the Arenal Observatory Lodge. They all take roughly 3 hours by car from San José.

The most popular route heads out of San José along the Inter American Highway to the town of San Ramón, where you head into the hills, passing through La Tigra, on the way to La Fortuna.

An alternative route turns off the Inter American Highway at Naranjo and passes through Zarcero and Ciudad Quesada (San Carlos), before reaching La Fortuna. If you take this route, be sure to stop and walk around.

You can drive north through Alajuela or Heredia, skirting the Poás Volcano en route to Varablanca and Aguas Zarcas. Beyond Aguas Zarcas, you will come to Ciudad Quesada and continue onwards to La Fortuna. If you have the time, this route permits a visit to the Poás Volcano, as well as a stop to admire the impressive La Paz waterfall.

Once you reach La Fortuna, continue through town towards Tabacón and the Arenal National Park. Just before reaching Lake Arenal you will come to a marked turn-off for the National Park entrance. Take this left turn-off. From here it is 9 kilometers along a somewhat rough dirt road. Continue on past the park entrance following signs for the Arenal Observatory Lodge. A four-wheel drive vehicle is recommended in the rainy season, and high clearance is always useful.

Due to extreme weather and heavy rains, road conditions can change rapidly in Costa Rica. It is always best to call the lodge to find out current conditions and what route is best for you.

Here’s a short list of some essential and highly recommended items to bring with you:

• Binoculars
• Flashlight
• Camera
• Rain gear
• Hiking shoes/boots
• Bathing suit
• Light sweatshirt/sweater or windbreaker
• Birding list
• Any necessary personal medications
• Pocket Knife
• Insect repellant
• Sunscreen
• Sun hat
• A small day pack for hikes
• Plastic bags for your gear