Dates
September 3–6, 2027
Friday through Monday.
Location
Gemini Springs Park
37 Dirksen Drive, DeBary, FL 32713
Distances
50K · Marathon · Half · 10K · 5K
Every distance, every day. Switch any day.
Start Times
  • 7:00 AM50K and Marathon
  • 7:10 AMHalf Marathon
  • 8:00 AM10K and 5K
Race Day Cutoff
4:00 PM
Applies to the full race day — not per distance.
Run
One Day Or Every Day
Standalone or Streak. Pick at registration.

Day By
Day.

Day 1 of 4

Friday, September 3, 2027

  • Gemini Springs 50K – Day 17:00 AM
  • Gemini Springs Marathon – Day 17:00 AM
  • Gemini Springs Half Marathon – Day 17:10 AM
  • Gemini Springs 10K – Day 18:00 AM
  • Gemini Springs 5K – Day 18:00 AM

Race day cutoff: 4:00 PM

Day 2 of 4

Saturday, September 4, 2027

  • Gemini Springs 50K – Day 27:00 AM
  • Gemini Springs Marathon – Day 27:00 AM
  • Gemini Springs Half Marathon – Day 27:10 AM
  • Gemini Springs 10K – Day 28:00 AM
  • Gemini Springs 5K – Day 28:00 AM

Race day cutoff: 4:00 PM

Day 3 of 4

Sunday, September 5, 2027

  • Gemini Springs 50K – Day 37:00 AM
  • Gemini Springs Marathon – Day 37:00 AM
  • Gemini Springs Half Marathon – Day 37:10 AM
  • Gemini Springs 10K – Day 38:00 AM
  • Gemini Springs 5K – Day 38:00 AM

Race day cutoff: 4:00 PM

Day 4 of 4

Monday, September 6, 2027

  • Gemini Springs 50K – Day 47:00 AM
  • Gemini Springs Marathon – Day 47:00 AM
  • Gemini Springs Half Marathon – Day 47:10 AM
  • Gemini Springs 10K – Day 48:00 AM
  • Gemini Springs 5K – Day 48:00 AM

Race day cutoff: 4:00 PM

Each race day is its own race, with its own official finish record. Run one day as a Standalone, two or three days as a Resolve, or all four days as a Streak. See All Race Days →

Spring-To-Spring
Trail

The Gemini Springs Labor Day 4-Day Challenge runs on the Spring-to-Spring Trail / Pat Northey Pathway in DeBary, FL. The course starts and finishes at the O.K. Corral pavilion at Gemini Springs Park.

Every distance follows the same out-and-back route — out along the trail to a marked turnaround and back. Every repeat brings you back to the O.K. Corral for aid, then sends you out again.

Oak and palm hammock overhead nearly the whole way.

Runners may access their own vehicle if parked near the course, though reaching it means stepping off the path and will add distance.

It gets familiar real quick. That is the point.
What You Get. What You Don't.

No shirts. No race bags. No expo. No chip timing. Nothing in a bag at the finish. A measured course. A clock. A finish that gets recorded. And a reason to come back tomorrow.

Know
The Morning.

Parking

Gemini Springs Park, 37 Dirksen Drive, DeBary, FL 32713. Turn left into the main park entrance from Dirksen Drive, follow the main park road, and stay left where the road splits. That lane leads directly into the West Parking Lot, adjacent to the dog park and the O.K. Corral pavilion. Arrive early.

Aid Station

This is a cupless event. Carry your own fluids — handheld bottle, vest, or waist pack. MileBuilt provides water, an electrolyte drink, and basic snacks at the aid station. Do not rely on the aid station as your complete nutrition plan, especially for longer distances or multi-day participation.

Bib Pickup

Bibs are available for pickup on race day beginning one hour before your scheduled start time — honor system, no ID required. A friend may pick up your bib on your behalf. No bib transfers — your bib is registered to you.

Finish

Not chip timed. When you finish: cross the line, strike the GONG, then complete the Clock Out at the MileBuilt Time Clock.

Official finish times are recorded at the MileBuilt Time Clock and verified by the Race Director before results are posted. Every runner must complete the Clock Out process to receive an official finish record.

September Heat

Four race days in Florida in September. This event is built for those conditions.

Ice and cold fluids are held at the O.K. Corral through the full race day, not only the early hours. The pavilion is covered, and oak and palm hammock runs overhead nearly the whole course.

The Race Director may adjust start times or the course for conditions. Registered runners are notified of any change.

Travel

Flying in. Orlando Sanford International (SFB) is roughly 20 minutes away. Orlando International (MCO) is roughly 45 minutes. Rental cars are available at both.

Driving. The park sits on Dirksen Drive, just west of I-4. Hotels are within a few miles in DeBary, Orange City, Deltona and Sanford.

Four race days means four mornings at the park. Plan for a vehicle. SunRail does not run weekends or holidays.

Camping

Primitive tent camping only. Ten sites inside Gemini Springs Park, each with a fire ring, picnic table, and groomed tent pad. No RVs. Reserved directly through Volusia County (386-736-5953), not through race registration, and sites are limited.

One Day Is A Full Race.
Four Days Is A Streak.

Every finish earns the Daily Finisher Medallion. Run all four days on a Streak and you earn the Tier Patch. Pick a distance each morning — any distance holds the Streak, and your longest race sets your tier.

Open Path

Standalone

One race day. Pick any distance. No pledge. No tier. Daily Finisher Medallion.

Open Path

Resolve

Two or three race days. Any distances. No pledge. No tier. Daily Finisher Medallion each day.

Commitment Path

4-Day Streak

All four days, consecutive. Sign your personal pledge at registration. Built-in Streak pricing. Earn your Tier Patch upon completion.

How Streaks and tiers work →

Crew Up
At This Event.

Volunteer shifts for the Gemini Springs Labor Day 4-Day Challenge are live on RunSignup. Friends and family supporting a runner are welcome. Volunteers may earn race credit toward future MileBuilt races based on verified hours.

The
Calendar.

See All Race Days →
Registration Is Open

Pick Your
Distance.

Register on RunSignup. Prices are shown at registration — not on this website.