Event Overview
| Date | May 8, 2027 |
|---|---|
| Location | Freudenstadt-Grüntal, Germany |
| Format | Backyard Ultra |
| Terrain | Road |
| Region | Europe |
| Distance / duration | 6.708 km every hour |
| Course model | Out-and-back |
| Edition note | Second edition: May 8, 2027; third edition: September 11, 2027. Both start at 8:00 AM with no fixed finish. The separate Mini-SWUB uses 4.472 km hourly. |
| Next edition | September 11, 2027. The organizer’s announcement also confirms a third edition on September 11, 2027, starting at 8:00 AM; no end date is announced. |
| Cutoff | Missing a restart or exceeding 60 minutes eliminates a runner. Racing ends when the last runner stops; all are ranked by distance. |
| Start | 8:00 AM Saturday; restart on each full hour. |
| Field size | The announcement conflicts: 55 places in services, 50 in fees. Confirm availability directly. |
| Highlights | Paved Hourly Course, Distance Rankings |
Course & Terrain
Three paved out-and-backs toward Aach per hour, totaling 6.708 km; gently rolling.
Entry & Logistics
| Registration and fees | Check the official event website for current availability, deadlines, prices, taxes, and refund terms. |
|---|---|
| Qualification | Email thomas@neckarlauf.com; payment secures entry. Nonrefundable €15 place fee plus €40 participation. |
| Support model | Food from 6:30 AM and drinks; bring a cup. |
| Logistics note | Organizer: Thomas Dornburg. Haldenstraße 10, 72250 Freudenstadt-Grüntal; station Grüntal-Wittlensweiler. Overnight accommodation by arrangement; bring sleeping bag and mat. |
Why This Race Matters
Backyard SWUB Freudenstadt-Grüntal 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 Backyard SWUB Freudenstadt-Grüntal
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 fueling framework to test for eating and drinking between loops.
Planning Notes
- Practice the exact hourly routine: loop, eat, foot check, bottle refill, and back to the start. The format rewards repeatability.
- Repetitive surfaces can expose fit, friction, and loading problems. Check in when symptoms or conditions change, and use only footwear already tested for the course.
- The directory does not mark this as having simpler logistics. Confirm qualification, terrain, support, registration, medical, and withdrawal requirements before planning around it.
- Carry a light at night.
- Follow the marked course and traffic rules; no animals. Notify the organizer on withdrawal. Entries cannot be transferred.
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
- 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 5, 2026. Organizers can revise details after review.
- Organizer calendar — https://neckarlauf.com/
- SWUB dates, rules and entry — https://neckarlauf.com/schwarzwaldultra-backyard.html
- General participation rules — https://neckarlauf.com/ergenislisten.html
- Organizer imprint — https://neckarlauf.com/impressum.html
- Multiday Running event directory review scope: November 5, 2026.