Guerrero Negro, the small desert town on the border of Baja California and Baja California Sur, now has a formal marker declaring it the symbolic origin point of the gray whale’s annual migration. Municipal president Edith Aguilar Villavicencio of the Mulegé municipality unveiled the “Kilómetro 0 de la Ballena Gris” (Kilometer Zero of the Gray Whale) landmark in an official ceremony. The installation positions Guerrero Negro as the anchor destination for one of Baja’s most celebrated wildlife experiences.
Laguna Ojo de Liebre: UNESCO Heritage Site Since 1993
The landmark draws its meaning from what happens each winter in the waters just south of town. Laguna Ojo de Liebre, also known as Scammon’s Lagoon, is one of three major calving lagoons for the eastern Pacific gray whale population. UNESCO inscribed the lagoon and its neighboring waters as part of the Whale Sanctuary of El Vizcaíno, a World Heritage Site, in 1993. The sanctuary covers 370,950 hectares of coastal lagoons, marshes, and open sea along the central Pacific coast of Baja California Sur.
Gray whales travel roughly 10,000 to 12,000 kilometers each way between their summer feeding grounds in the Bering and Chukchi Seas off Alaska and their winter calving lagoons in Baja. That round trip of up to 20,000 kilometers makes it one of the longest mammal migrations on Earth. The whales begin arriving in Guerrero Negro’s lagoon as early as late December, with peak season running from mid-January through March. By late April, most mothers and calves have begun the northward journey back to Arctic waters.
The “Kilometer Zero” concept borrows from a tradition common in capital cities around the world, where a central marker designates the point from which all road distances are measured. In Guerrero Negro’s case, the monument claims the town as the symbolic starting point of the whale’s reproductive cycle, since many pregnant females arrive at Ojo de Liebre first before some continue south to San Ignacio Lagoon or Bahía Magdalena.
Three Lagoons Draw Over 20,000 Visitors Each Season
Guerrero Negro is not the only whale-watching destination on the Baja peninsula, but it is the most accessible by road from the north. The town sits just south of the 28th parallel, the state line between Baja California and Baja California Sur, along the Transpeninsular Highway (Highway 1). Drivers coming from Ensenada face roughly 700 kilometers of highway, about an eight-hour drive. From La Paz, the distance is roughly 800 kilometers to the south.
San Ignacio Lagoon, about 200 kilometers southeast of Guerrero Negro, offers a more remote experience. Access requires a rough dirt road from the town of San Ignacio. Bahía Magdalena, farther south near Ciudad Constitución, is the third major calving lagoon. Each lagoon has a distinct character: Ojo de Liebre is the largest and most easily reached, San Ignacio is known for “friendly” whales that approach pangas (small boats) to be touched, and Bahía Magdalena offers both whale watching and deeper sportfishing waters.
Together, the three lagoons draw an estimated 20,000 to 30,000 visitors each whale season. Local tour operators in Guerrero Negro run panga excursions into Ojo de Liebre, typically lasting two to three hours. Malarrimo Eco Tours, one of the longest-running operators in the area, has offered trips from Guerrero Negro for decades. Mario’s Tours and Laguna Tours are also established local options. Prices for a panga trip generally range from 800 to 1,500 pesos (roughly $45 to $85 USD) per person, though rates vary by operator and season.
CONANP, Mexico’s national commission for natural protected areas, regulates boat access to the lagoons during whale season. Permits limit the number of pangas on the water at any given time, and boats must maintain minimum distances from whales unless a whale approaches voluntarily. The permit season typically opens in January and closes in mid-April.
Guerrero Negro’s Tourism Infrastructure Remains Basic but Growing
Guerrero Negro is a working town of roughly 15,000 people, built around the Exportadora de Sal (ESSA) salt works, one of the largest salt-producing operations in the world. The town’s hotel options are limited but functional, with properties like the Malarrimo Hotel and the Hotel Los Caracoles serving as the primary choices for visitors. There is no commercial airport in Guerrero Negro, though a small airstrip handles private flights.
The new Kilómetro 0 landmark adds a visible cultural marker to a town that has long relied on word of mouth and repeat visitors. Whale-watching tourism is the second economic pillar after the salt industry, and the municipal government under Aguilar Villavicencio has framed the installation as part of a broader effort to strengthen Guerrero Negro’s identity as a destination.
The 2025 whale season ended in April. The next season is expected to begin in January 2026, with whales likely visible in Ojo de Liebre by late December 2025. The story was first reported by the Mulegé municipal government.