Witness nature's most spectacular event — over two million wildebeest, zebras, and gazelles crossing the Serengeti-Mara ecosystem. Learn the best months, locations, and tips to experience the river crossings.
Every year, over 1.5 million wildebeest — accompanied by hundreds of thousands of zebras and gazelles — undertake one of nature's most extraordinary journeys. The Great Wildebeest Migration is a continuous, circular movement across the Serengeti-Mara ecosystem, driven by rainfall and the eternal search for fresh grazing. It's widely regarded as one of the greatest wildlife spectacles on Earth, and witnessing it firsthand is a life-changing experience.
At C.A.T.S (Collective African Tours & Safaris), we've spent 15 years helping travellers position themselves in the right place at the right time to witness the migration's most dramatic moments. From the thundering river crossings of the Mara to the vast calving grounds of the southern Serengeti, this guide covers everything you need to plan your migration safari.
Whether you're a first-time safari-goer or a seasoned wildlife enthusiast, understanding the migration's rhythm is the key to an unforgettable trip.
Understanding the Migration Route
The Great Migration is not a single event — it's a year-round cycle that follows a roughly clockwise path through Tanzania's Serengeti National Park and Kenya's Masai Mara National Reserve. The herds cover approximately 1,800 kilometres each year, constantly moving in search of nutrient-rich grass and water.
From January to March, the herds congregate in the southern Serengeti and Ndutu area, where the short-grass plains provide ideal conditions for calving season. Around 500,000 calves are born during this brief window, attracting predators like lions, cheetahs, and hyenas in extraordinary numbers.
As the dry season approaches in April and May, the herds begin their northward trek through the western Serengeti corridor. River crossings at the Grumeti River offer early drama as crocodiles lie in wait. By June, the columns of wildebeest stretch across the landscape in staggering numbers.
The most iconic phase occurs from July to October, when the herds reach the Mara River and begin crossing into Kenya's Masai Mara. These river crossings are the migration's most photographed and filmed moments — chaotic, dangerous, and utterly mesmerising. By November and December, the short rains draw the herds back south toward the Serengeti, completing the cycle.
The Mara River Crossings: July to October
Ask any safari enthusiast about the migration, and they'll likely mention the Mara River crossings first. Between July and October, the herds amass on the banks of the Mara River, sometimes waiting for days before plunging into the crocodile-infested waters. The crossings are unpredictable — that's part of what makes them so thrilling.
The best locations to witness crossings include the areas around Keekorok, Mara Serena, and the Mara Triangle in the western section of the reserve. Your guide's local knowledge is invaluable here; experienced guides working within the Mara know the favoured crossing points and can position you for the best vantage.
A typical crossing lasts anywhere from a few minutes to several hours. Thousands of wildebeest pour down steep banks, leap into the swirling water, and scramble up the far side — all while Nile crocodiles patrol below. Not every animal makes it, and the raw reality of the food chain plays out before your eyes.
We recommend spending at least three to four nights in the Mara during crossing season to maximise your chances. Weather and herd movements are unpredictable, so patience and flexibility are essential.
Calving Season in the Serengeti: January to March
While the river crossings grab headlines, calving season in the southern Serengeti is equally remarkable — and far less crowded. Between January and March, the herds settle on the vast Ndutu plains, where volcanic soil produces mineral-rich grasses perfect for nursing mothers.
During peak calving in February, an estimated 8,000 calves are born daily. The sheer abundance of newborns attracts every predator on the plains. It's one of the best times to witness hunting action, including cheetah sprints, lion ambushes, and hyena clan hunts.
The landscape during this period is breathtaking — endless green plains under dramatic skies, with the Ngorongoro Highlands as a backdrop. Accommodation options range from luxury tented camps to mid-range mobile camps that follow the herds. The southern Serengeti offers a more intimate, less vehicle-congested experience compared to the Mara during peak season.
Tips for Planning Your Migration Safari
Book early. Migration-season camps and lodges fill up 6 to 12 months in advance, especially for July–October in the Mara and January–February in the Serengeti. Early booking also gives you the widest choice of accommodation and pricing options.
Be flexible with dates. The migration doesn't follow a strict calendar. Rainfall patterns vary year to year, and the herds may arrive earlier or later than expected. Building a few extra days into your itinerary gives you a buffer.
Choose your experience. Do you want the raw drama of river crossings, or the wide-open beauty of calving season? Perhaps both — many travellers combine a Serengeti and Mara itinerary to experience multiple phases of the migration in a single trip.
Pack appropriately. Mornings and evenings on the plains can be cool (especially June–August), so bring layers. A good pair of binoculars and a camera with a zoom lens will enhance your experience enormously.
Trust local expertise. The difference between a good migration safari and an extraordinary one often comes down to guiding. Our network of trusted guides and operators in both Kenya and Tanzania have deep knowledge of herd movements and crossing points.
Where to Stay During the Migration
Accommodation during migration season ranges from ultra-luxury permanent lodges to intimate mobile tented camps that relocate with the herds.
In the Masai Mara, top options include camps along the Mara River and in the Mara Triangle conservancies. Private conservancies bordering the reserve — such as Olare Motorogi, Naboisho, and Mara North — offer exclusive game viewing with fewer vehicles and the flexibility of night drives and walking safaris.
In the Serengeti, the central Seronera area provides year-round wildlife, while seasonal camps in the southern plains (Ndutu) and northern Serengeti (Kogatende) position you closest to calving and river crossings respectively.
We work with a carefully vetted network of lodges, camps, and transport partners across both countries to match you with the right accommodation for your budget and travel style. Whether you're looking for a romantic honeymoon camp or a family-friendly lodge, we'll find the perfect fit.
Why Book Your Migration Safari with C.A.T.S
With 15 years of experience organising East African safaris, C.A.T.S understands the migration like few others. We work through a trusted network of tour operators, expert guides, premium lodges, and reliable transport partners across Kenya and Tanzania.
Our team in Nairobi monitors migration movements in real time, adjusting recommendations so you're always in the best position. We handle every detail — from airport transfers and domestic flights to park fees and camp reservations — so you can focus entirely on the experience.
Ready to witness the greatest wildlife show on Earth? Contact C.A.T.S today to start planning your migration safari. Our team will design a personalised itinerary based on your travel dates, budget, and interests. The wildebeest won't wait — and neither should you.
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