Mara Day 2026: One River, Two Countries and a Shared Future
The Mara River is one of East Africa’s most important natural lifelines.
It flows from Kenya’s Mau Forest Complex through the Maasai Mara and onward into Tanzania, eventually reaching Lake Victoria. Along the way, it supports communities, wildlife, agriculture, and one of the most extraordinary natural spectacles in the world: the annual wildebeest migration.
This September, that river takes centre stage as Kenya and Tanzania come together for the 15th Mara Day celebrations, taking place from 12–15 September 2026 in Bomet County. The main celebration is scheduled for 15 September at Bomet Stadium.
This year’s theme, “Mara River, Diverse Lives: Keep It Thriving,” focuses attention on just how many lives depend on this shared ecosystem. The programme includes conservation exhibitions, tree planting along degraded sections of the river, environmental clean-ups, school activities, community sports and discussions around some of the pressures facing the basin.
Those pressures include pollution, degradation of the catchment, encroachment on wetlands and the growing effects of climate change.
For us, the conversation feels especially relevant during migration season.
The dramatic river crossings may be what many visitors remember most vividly, but the Mara River is much more than a backdrop for wildlife photography. Its water supports the Maasai Mara National Reserve and Serengeti ecosystem, local communities and livestock, and the wider landscapes that make this region what it is.
Mara Day was established in 2012 to strengthen cooperation between Kenya and Tanzania in protecting the transboundary river basin. Over the years, it has helped bring communities, scientists, conservation organisations and government representatives together around the idea that the river cannot be protected by one country or one group acting alone.
