Event Overview
| Date | Mar 20, 2027 |
|---|---|
| Location | Lorton, Virginia, USA |
| Format | Backyard Ultra |
| Terrain | Trail |
| Region | North America |
| State / area | Virginia (VA) |
| Course model | Loop |
| Edition note | The registration page confirms March 20, 2027 at 8:00 AM. One paragraph of the main website instead says March 27. Entry is selective and requires prior ultra experience. |
| Elevation gain | Day loop: roughly 300-350 ft per yard; night loop: roughly 75 ft per yard. |
| Cutoff | No fixed finish time. Runners must finish each yard in under one hour and start the next on time. |
| Start | 8:00 AM |
| Field size | Limited to 65 runners. |
| Sanctioning | BUA |
| Highlights | Deep Backyard Field, Small Field |
Course & Terrain
Backyard ultra with a 4.167-mile yard starting every hour until only one runner remains.
Key course features to know before comparing this race:
- Day loop on horse trails at Meadowood
- Night loop on paved bike path
- Crew setups seconds from the starting corral
Capital alternates a rolling trail day loop with a faster paved night loop, so shoe choice and leg impact change across the race.
Early spring near Washington, DC can bring rain, cool nights, and variable trail conditions.
Entry & Logistics
| Registration and fees | Check the official event website for current availability, deadlines, prices, taxes, and refund terms. |
|---|---|
| Qualification | The organizer uses prior ultramarathon experience when considering entries; check the current official criteria before applying. |
| Support model | Centralized covered pavilion, dedicated crew/tent space, camping, professional-chef aid station, hot food, smoothies, water, ice, and electrolyte drink. |
| Crew / pacers | Crew support happens between yards only. No pacing, personal aid, or artificial aids are allowed during a yard. |
| Logistics note | The official page emphasizes the pavilion setup, Friday-night camping, and crew space, making the race unusually comfortable for a deep backyard effort. |
Why This Race Matters
Capital Backyard Ultra is a useful reference point for runners comparing backyard ultra events. Its format, terrain, and support model shape the kind of preparation required: not just fitness, but pacing discipline, nutrition planning, foot care, and the ability to make good decisions under fatigue.
Preparing for a Race Like Capital Backyard Ultra
The backyard ultra race guide covers the format as a whole. These guides go deeper:
- Backyard ultras explained: Rules, distance math, current records and how a race ends.
- Backyard ultra training plan: A 16-week framework with hourly-loop rehearsals and a printable worksheet.
- Backyard ultra race strategy: Loop pacing, the routine between loops, sleep and knowing when to stop.
- Backyard ultra nutrition: A tested fueling routine for eating and drinking between loops.
Best Fit
- Backyard runners chasing a serious yard total
- Athletes who want a small field with strong crew infrastructure
- Runners preparing for Big's or national-team backyard formats
Planning Notes
- Practice the exact hourly routine: loop, eat, foot check, bottle refill, and back to the start. The format rewards repeatability.
- Train for terrain-specific fatigue. Technical trails and mountain courses demand downhill durability, hiking efficiency, and reliable night lighting.
- The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.
- Entry is limited and not simply first-come, first-served
- The day-loop climbing adds up quickly if the race goes deep
- Backyard rules prohibit aid, pacing, or crew contact during each active yard
Event FAQs
How large is the Capital Backyard Ultra field?
The official page says the field is intentionally limited to 65 runners.
Does Capital Backyard Ultra use the same course all day?
No. The official page describes a trail day loop and a paved night loop.
Related Preparation
- Open the Backyard Ultra format guide
- Compare all race formats
- Use the timed-race pace calculator
- Build a backyard yard and rest-time schedule
- 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 September 22, 2026. Organizers can revise details after review.
- Official Capital Backyard Ultra page — https://capitalbackyardultra.com
- Organizer’s 2027 registration and entry criteria — https://ultrasignup.com/register.aspx?did=139799
- Multiday Running event directory review scope: September 22, 2026.