2026 Not 4 Wimps

The Not 4 Wimps 10K / 10 Miler / Half-Marathon, taking place on Sunday, February 22, 2026, in Derby, Kansas, is an annual trail running event hosted at Warren Riverview Park. The event, now in its 34th year, offers a challenging trail experience along the Arkansas River corridor, featuring singletrack and natural surfaces. Weather conditions in Derby during early February typically range from 30°F to 45°F, with potential for light precipitation and varying trail conditions. Participants can expect a pure trail running experience with no road sections, emphasizing natural terrain challenges and a focus on endurance and grit.

What distances are available for this event?

• →10K
• →10 Miler
• →Half-Marathon

How much does registration cost?

• →10K: $30
• →10 Miler: $35
• →Half-Marathon: $40

What is the event's race philosophy?

The event follows a "No Frills" ethos, which includes no finisher medals, no age-group awards, and no participant shirts included with registration. Chip timing is provided, and post-race bottled water is available. Participants are encouraged to bring their own food and share at the fire pit.

What is the event's course like?

The course features a shared base route for all three distances with distance-specific variations. It includes extensive singletrack and natural surface trails along the Arkansas River corridor, with significant sandy sections and occasional mud patches depending on February conditions. The course is well-marked with color-coded signage for each distance, and aid stations with bottled water are available beginning at mile 3.

What are the event's start and closure times?

The event starts at 12:00 PM CST for all distances, and the course closes at 3:00 PM CST sharp.

What are the event's rules regarding participants?

Walkers are permitted in the 10K and 10 Miler only, and must finish before the course closure at 3:00 PM CST. Strollers, bicycles, rollerblades, and skateboards are prohibited. The event is dog-friendly, with well-trained running partners welcome on course.

What amenities are available at the event?

Indoor restrooms are available just outside the lodge entrance at Warren Riverview Park. Packet pickup begins at 11:00 AM at the outdoor pavilion. Spectators can watch from the lodge balcony or nearby Arkansas River Bridge.

What is included in the registration?

Registration includes chip timing provided by The Timer Guys. Post-race bottled water is available, but participants are encouraged to bring their own food and share at the fire pit. No finisher medals, age-group awards, or participant shirts are included.

Are there any special benefits for Derby Run Club members?

Derby Run Club members receive a $5 discount per race and additional local running benefits.

What is the maximum number of participants?

The total field is limited to 200 participants across all distances.

When does registration close?

Registration closes on February 20, 2026, at 11:59 PM CST.