Ultra Marathon

Circum Kilimambogo 3 in 1 Run - Kosmos Style

Saturday, 23 May 2026 · 6:30 AM (Assembly 6:00 AM)

A unique 3-in-1 run around Mt. Kilimambogo: a full marathon in the morning (Wider Circum), a half marathon hike to the summit at noon, and a 10km recovery run in the evening.

Circum Kilimambogo 3 in 1 Run - Kosmos Style poster
6:30 AM (Assembly 6:00 AM)
42km, 21km, 10km (or all three)
Park Entry Fee only: East African Citizens KES 500 (Adult), KES 250 (Child/Student)Kenyan Residents KES 675 (Adult), KES 350 (Child/Student)Non-Residents USD 50 (Adult), USD 25 (Child/Student)African Citizens USD 20 (Adult), USD 10 (Child/Student)
Ultra Runners Kenya
Ness: 0720 324 705
3 days to go
Race week. Time to trust your training.
💡 Keep any activity short and easy. Sleep well, eat familiar foods, and lay out your kit the night before.

Event Highlights

Unique 3-in-1 format: full marathon, half marathon summit hike, and evening recovery run all in one day
Circumnavigate Mt. Kilimambogo on the Wider Circum route (42km) in the morning
Hike the full course to the Kilimambogo summit (21km) at noon
Wind down with a 10km evening recovery run
Organised by Ultra Runners Kenya at the scenic Olosowan Resort

Race Options & Fees

42km
21km
10km (or all three)
CategoryFeeStatus
42km - Wider Circum
Full marathon in the morning. Park entry fee applies separately.
KES 0Available
21km - Hike Full Course to Summit
Half marathon hike to the summit at noon. Park entry fee applies separately.
KES 0Available
10km - Evening Recovery Run
10km recovery run in the evening. Park entry fee applies separately.
KES 0Available
All Three (42km + 21km + 10km)
Enter all three distances. Park entry fee applies separately.
KES 0Available

Course Details

Three staggered distances share the same venue at Olosowan Resort. The 42km Wider Circum starts at 6:30 AM, the 21km hike to the summit begins at noon, and the 10km recovery run takes place in the evening. Participants can enter one, two, or all three distances. Park entry fees apply and are paid separately on the day.

Getting There

Olosowan Resort is at Kilimambogo, approximately 65km northeast of Nairobi along the Thika-Garissa Road. The Google Maps Plus Code is W742+9X Katheka. The drive from Nairobi takes around 1 to 1.5 hours (without much traffic). Contact Ness on 0720 324 705 for directions.

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Did You Know?

🌍Ol Donyo Sabuk (Kilimambogo) rises to 2,145m above sea level and is one of the most prominent peaks in central Kenya.
🌍Ol Donyo Sabuk National Park is home to buffalo, colobus monkeys, and over 200 bird species within its forested slopes.
🌍The Kilimambogo area lies in Machakos County on the border with Murang'a, roughly 65km northeast of Nairobi.

Frequently Asked Questions

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