Ruta del Tránsito: route guide

The route runs coast to coast across southern Nicaragua: from the Pacific side at San Juan del Sur and Rivas, across Lake Nicaragua to San Carlos, then down the Río San Juan through rainforest to the Caribbean village of San Juan del Norte (also called Greytown). It crosses the Río San Juan region and southwestern Nicaragua.

In the 1840s and 1850s this was one of the main ways to reach the US west coast before the transcontinental railroad opened in 1869, and it carried gold-rush traffic. Steamers ran the water legs and horses or carriages covered the short land stretch. Today the boats are diesel and the buses are ordinary public buses.

Coordinates for the route corridor are approximate: San Carlos sits near 11.12, -84.78 and San Juan del Norte near 10.92, -83.70. Use an offline map app; signal drops on the river.

Treat the route as four legs. The Pacific leg is easy: Rivas and San Juan del Sur are connected by frequent buses and taxis, and Rivas is the transport hub for the lake crossing.

The lake leg runs from Rivas area ports to San Carlos. Boats and buses both serve it; the boat is slower and more scenic, the bus is more reliable in bad weather. San Carlos is the last real town before the river.

The river leg is the heart of the trip: a long launch ride down the Río San Juan with jungle on both banks and small settlements along the way. Schedules are limited and can change; confirm departure days locally when you arrive in San Carlos.

The final leg ends at San Juan del Norte, a quiet village with few services. There is reportedly a weekly boat link with Bluefields, but it can leave you waiting a week if it does not run.

The dry season, roughly December to April, is the practical window: roads are firmer, river levels are lower and crossings are more predictable. The wet season from May to November brings heavy rain, rougher water and more chance of a cancelled or delayed launch.

Heat and humidity are constant on the river. Mosquitoes are the real hazard here, not the wildlife: malaria and dengue are endemic east of San Carlos, so repellent, long sleeves at dusk and a bed net where offered are worth the weight.

Bull sharks and caimans live in the lake and river. Shark numbers are heavily reduced by hunting, and caimans mostly eat fish, but keep hands and bleeding cuts inside the boat.

San Juan del Sur and Rivas have the widest choice, from hostels to small hotels, and are the natural first night. San Carlos has simple guesthouses and is where you stage the river trip, so book a night before and after in case the boat schedule shifts.

Along the river, accommodation is basic: small lodges and village guesthouses, often with limited power and no hot water. San Juan del Norte has very little, so check what is open before you commit to arriving late.

Book the first and last nights ahead, and treat everything in between as flexible. Cash matters more than cards east of San Carlos.

Carry córdobas in small notes, a refillable water bottle with a filter or purification tablets, mosquito repellent with DEET or picaridin, a headlamp, and a light rain shell even in the dry season.

Check your rabies vaccination status before you go. Dogs along the route can be aggressive and are not reliably rabies-free; any bite needs medical attention immediately.

Confirm river boat days in San Carlos rather than trusting an old timetable, and keep a spare day in your plan. For the wider planning method, see the step-by-step trip planning guide.