The short answer
They are one ecosystem split by the Tanzania–Kenya border. The Serengeti (14,763 km²) is about ten times larger than the Masai Mara (about 1,510 km²), so it feels wilder and less crowded, and it hosts the migration for most of the year. The Mara is compact, quick to reach and spectacular from August to October.
Key facts
- Serengeti
- 14,763 km²
- Masai Mara
- ≈ 1,510 km²
- Herds in the Mara
- ≈ August – October
- Herds in the Serengeti
- Most of the year
Size and crowds
The Mara’s compact size is both its strength and its weakness: wildlife is dense and easy to find, but popular sightings can draw many vehicles. In the Serengeti, especially the north, east and south, it is common to watch a lion pride or a crossing with only a handful of others — or none.
When is each better?
From December to July the herds are entirely in Tanzania, so the Serengeti is the only choice for the migration. From August to October both parks share the Mara River crossings. Outside migration months, the Mara’s resident predators are excellent, while the Serengeti’s big-cat areas around Seronera and the eastern plains are outstanding year-round.
Can you do both?
Yes, but there is no open border crossing inside the ecosystem for tourists, so combining them means flying via Arusha and Nairobi or a regional connection. For most travellers, a well-planned Serengeti safari — with the northern sector in season — delivers everything the Mara does, with more space.
Questions, answered
Which is better for river crossings?
Both share the same Mara River. The northern Serengeti typically has fewer vehicles at each crossing point, while the Mara has more crossing points close to many camps.
Published 22 September 2026 · Updated 1 October 2026
