Event Overview
| Date | Dec 30, 2026 - Jan 1, 2027 |
|---|---|
| Location | Missouri City, Texas, USA |
| Format | Fixed-Time |
| Terrain | Mixed |
| Region | North America |
| Distance / duration | 55 hr |
| State / area | Texas (TX) |
| Course model | Loop |
| Edition note | The 14th-edition heading and linked registration confirm December 30, 2026–January 1, 2027. Older year and weekday text remains lower on the pages. Solo registration showed a waitlist on November 4. |
| Cutoff | 55 hours |
| Start | 7:00 AM |
Course & Terrain
A certified 0.69045-mile loop on crushed granite and pavement at Buffalo Run Park.
Entry & Logistics
| Registration and fees | Check the official event website for current availability, deadlines, prices, taxes, and refund terms. |
|---|---|
| Crew / pacers | Pacers are prohibited. Solo runners and relay teams are scored separately. |
| Logistics note | Buffalo Run Park, 1122 Buffalo Run Boulevard, Missouri City. The advertised finish is 2:00 PM on January 1. |
Why This Race Matters
The race supports the Snowdrop Foundation’s research and scholarship work. Its 55-hour duration commemorates the surgery of foundation inspiration Chelsey Campbell.
Planning Notes
- Prepare several rest options before race week. Stop for sleep or assessment if alertness, coordination, or safe decision-making deteriorates.
- The directory marks this as having comparatively simpler logistics. That editorial label is not a safety rating; verify cutoffs, terrain, support, crew access, and withdrawal procedures.
- Only solo competitors are eligible for distance buckles and individual titles. Only complete laps count toward the official distance.
Related Preparation
- Compare this race in the full 2026 calendar
- Open the 48-hour format guide
- Compare all race formats
- Use the timed-race pace calculator
- Estimate race calories and plan fueling
- Build a crew and drop-bag plan
- Build a race-specific gear checklist
Verification & Sources
Verification scope: the listed edition's date, location, format, and available logistics were checked against the event-specific official sources below during the directory review dated November 4, 2026. Organizers can revise details after review.
- Snowdrop Foundation: 14th edition and course — https://snowdropfoundation.org/ultra-55/
- Official 2026–27 registration, solo rules and entry status — https://thedriven.net/event-registration/site.event_reg/eid/96794013467
- Multiday Running event directory review scope: November 4, 2026.