Mount Longonot is a volcano located in the Great Rift Valley 67 km (41 mi) northeast of Nairobi. It is thought to have last erupted in the 1860s.
You can hike to the top (3.1 km (1.9 mi)) and walk around the rim (7.2 km (4.5 mi)). It normally takes 4-6 hours depending on your rest breaks. It’s possible to do this with small children (4 years and up is best, unless you can easily carry them). There are two moderately steep places on the path that you will encounter.
It’s possible to see buffalo, zebra, giraffe. Occasionally leopards have been seen.