Ultrapalooza

Event Overview

Join us for Ultrapalooza on September 27 - 28, 2025, in Osawatomie, KS. This is part of the Kansas Super Slam of Ultrarunning Series, known for its incredible flat and fast course that winds through stunning landscapes.

Race Features

• Distances: 100 Miler, 100K, 50 Miler, 50K, Half Marathon, 10K, 5K
• Course: The trail is primarily a flat, crushed gravel path with beautiful views along the Flint Hills and Marais Des Cygnes River.
• Aid Stations: Manned aid stations stocked every 5 miles, with an unmanned water station available.
• Awards: Unique awards for top finishers in each distance, along with technical blend race shirts for participants.

Schedule of Events

Friday, September 27

• 4:00 - 7:00 PM: Packet Pickup

Saturday, September 28

• 5:00 - 5:45 AM: Packet Pickup for 100 Mile/100K/50 Mile
• 6:00 AM: Race Start for 100 Mile, 100K, and 50 Mile
• 6:30 AM: 50K Race Start
• 7:00 AM: Half Marathon Start

Registration

Onsite registration available. Pricing varies by distance, including taxes and fees:

• 100 Miler: $222.03
• 100K: $199.03
• 50 Miler: $176.03
• 50K: $105.77
• Half Marathon: $59.87
• 10K: $48.40
• 5K: $42.66

Location

Start/Finish at Mile 0 Flint Hills trail head, Osawatomie, KS.

Important Notes

Please arrive prepared for all weather conditions, as fall temperatures can vary. No pets allowed on the course. Be sure to read the race rules carefully.