The Wildebeest Migration: Timing, Locations, and What You Actually See

The Mara River crossings that appear in wildlife documentaries take place on no schedule. You can sit at the crossing point for six hours and see nothing, or you can arrive and watch 50,000 animals in the water within 20 minutes. No guide or operator can guarantee the timing. What they can do is increase your odds through river positioning, radio contact with other vehicles, and the accumulated knowledge of which sections of bank the animals prefer. That difference between a well-connected camp and a budget shared vehicle is real and makes a meaningful difference in August and September.

Around 1.5 million wildebeest and several hundred thousand zebra and gazelle move in a roughly circular pattern between the Serengeti in Tanzania and the Maasai Mara in Kenya each year. The movement follows the rainfall and the fresh grass it produces. The herd is always moving somewhere in this system; “the migration” as a tourist event refers to specific dramatic moments within a year-round cycle.

The most requested moment is the Mara River crossing in Kenya. It is also the least predictable.

The Annual Cycle

January to March (Southern Serengeti): the calving season. Around 500,000 calves are born in a short window, mostly in February. The predator concentration around the calving grounds is extremely high. Cheetahs, lions, hyenas, and jackals are all working the herds. This is one of the best times to see predator activity in Africa. The southern Serengeti (Ndutu area, Ngorongoro Conservation Area boundary) is where to be. Fewer tourists than the August peak, and the landscape is green.

April to May: the herd moves northwest through the central Serengeti toward the Western Corridor. Long rains make some roads difficult. Fewer operators running, prices lower.

June to July (Western Corridor, Grumeti River): the first river crossings happen here, at the Grumeti River. Crocodiles wait. The Grumeti crossings are less famous than the Mara crossings and have fewer observers. Camps in the Western Corridor (notably Singita Grumeti) position themselves for these crossings.

August to October (Maasai Mara): the herd moves north across the Tanzanian border into Kenya’s Maasai Mara National Reserve. The Mara River crossings happen multiple times during this period: the animals approach the river, hesitate for hours or days, then launch across in a mass of bodies. Nile crocodiles up to 5 metres long are waiting. Many wildebeest drown or are taken. The crossings are chaotic and happen on no schedule. Crossing points are clustered near specific bends in the Mara River.

November to December: the herd moves back south through the eastern Serengeti.

The Mara River Crossings: Realistic Expectations

The crossings are unpredictable. Game drives to the Mara River can result in a crossing within 30 minutes or waiting all day without seeing one. Experienced guides with local contacts (other guides calling each other on radio when a crossing begins) improve your odds considerably.

Crossings can happen at any time of day. Early morning and late afternoon are most common but not exclusive. When a crossing begins, it can last 10 minutes or 3 hours. The animals sometimes turn back.

What the crossing looks like: thousands of animals at the bank. A few leaders enter the water. More follow. The press of bodies pushing from behind means individual animals have little choice once the main movement starts. Crocodiles pull animals under. Wildebeest drown from trampling and exhaustion as much as from crocodile predation. The smell is significant. It is extraordinary.

Kenya: Maasai Mara

The Maasai Mara is a 1,500-square-kilometre national reserve in Kenya’s Rift Valley, extending from the Tanzania border northward. The landscape is open savannah grassland with scattered acacia trees and the Mara and Talek rivers cutting through it.

The Mara is managed as a reserve rather than a national park, which means private conservancies surround and extend it. Several of the best camps are in these conservancies rather than inside the official reserve. Camps in conservancies can do walking safaris and night drives, which are prohibited inside the main reserve.

Mara North Conservancy (north of the main reserve): higher-end camps including Mahali Mzuri and Elewana Elephant Pepper Camp. Night drives permitted. Wildlife density equal to the main reserve.

Olare-Motorogi Conservancy (northeast): Governors’ Private Camp, Kicheche Camp. Known for good lion sightings year-round.

Inside the reserve: the public sector is more crowded but accessible to budget safari operators driving from Nairobi. The Sekenani Gate is the main entry.

Getting there: daily flights from Nairobi’s Wilson Airport to Mara airstrips (Ol Kiombo, Keekorok, Musiara) take around 45 minutes. Air Kenya and SafariLink operate scheduled services. Cost around USD 200-280 return. Driving from Nairobi (about 300km) takes 5-6 hours on variable road quality.

Tanzania: Serengeti

The Serengeti National Park covers 14,763 square kilometres and is one of the oldest ecosystems on earth. The southern Serengeti (Ndutu region) is best for calving season. The central Seronera area has the densest year-round wildlife but the most tourist traffic. The northern Serengeti (Lamai and Kogatende areas) is nearest the Mara River crossings on the Tanzanian side.

Northern Serengeti camps for river crossings: Lamai Serengeti, Serengeti Safari Camp (Lamai), Alex Walker’s Serian Serengeti North. These have direct access to the crossing points. Expensive (USD 600-1,200 per person per night with full board and game drives) and frequently booked 6-12 months ahead for July-October.

Entry fees to Serengeti National Park: USD 82 per adult per 24 hours (2024 fee schedule from Tanzania National Parks Authority). This adds up quickly on a multi-day stay.

Getting there: Kilimanjaro International Airport and Julius Nyerere International Airport (Dar es Salaam) are the main Tanzania entry points. Domestic connections from Arusha or Dar es Salaam to Serengeti airstrips (Seronera, Lobo, Kogatende) are operated by Coastal Aviation and Air Excel.

What Level of Budget Gets What

Budget: USD 150-300 per person per day. Shared vehicle game drives, tented camps with shared facilities. The migration is accessible at this level but you lose the conservancy advantages (no night drives, no walking safaris).

Mid-range: USD 300-600 per person per day. Private or semi-private vehicles, camps with en-suite tents, better positioned relative to the river crossings.

High-end: USD 600-1,500+ per person per day. Private camps, exclusive use of crossing-point positioning, full-board with drinks, guides who specialize in the migration rather than general drivers.

The high-end camps have genuine advantages during the Mara River crossing season: better positioning, radio networks with other guides, and the ability to stay at crossing sites for extended periods rather than rotating through on a schedule.

Combined Kenya and Tanzania

The border between the Maasai Mara and the Serengeti is porous for wildlife but requires formal crossing procedures for vehicles and people. Most migration safaris focus on one country rather than crossing. A combined itinerary typically involves flying into Nairobi, flying to the Mara for 3-4 nights, then flying to Nairobi and onward to Kilimanjaro or Dar es Salaam for the Serengeti section. Allow 7-10 days minimum to do both properly.