The Next Loop Endurance Series | Lake Carl Blackwell
Stillwater, OK
Sat, Nov 21, 2026
In 66 days · Sat, Nov 21, 2026
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Saturday, November 21st, 2026
11000 W Hwy 51, Stillwater OK
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41–60°F · low rain risk
See last 10 years
On this date: rain 2 of the last 10 years
2025
53–66°F
dry
2024
38–53°F
dry
2023
41–52°F
dry
2022
31–55°F
dry
2021
46–59°F
dry
2020
49–62°F
rain
2019
42–64°F
rain
2018
36–57°F
dry
2017
42–57°F
dry
2016
44–64°F
dry
Best months to race in Oklahoma →
About this race
What Is The Next Loop?
The Next Loop Endurance Series is a loop-based endurance running event designed for every type of runner — from first-time 10K participants to seasoned marathoners, ultra runners, CrossFit, Hyrox, and tactical athletes.
You’ll run a 3.1-mile (5K) trail loop, starting a new loop every hour on the hour.
After each loop, you decide:
- Run: Complete another loop
- Stop: No penalties, no DNFs
- Count: Every completed loop counts
How Scoring Works
This event uses a simple, transparent scoring system that rewards consistency, pacing, and endurance.
- Start: Time starts when the loop begins
- Stop: Time stops when you cross the finish line
- Record: That loop time is officially recorded
- Score: Overall score combines times of every loop completed
There are:
- No penalties: For stopping
- No failures: No missed-cutoff failures
- Counted: Only completed loops
Why This Format Works for Everyone
New Runners:
- Run: Your first 5K, 10K, or Half Marathon without pressure
- Stop: When you’re done — your result still counts
- Compare: Performance with others completing the same number of loops
Marathon & Ultra Runners:
- Test: Pacing, fatigue, and recovery across multiple hours
- Analyze: Loop-by-loop performance
- Benchmark: Use results as a benchmark — not just a finish time
Hybrid / Functional Athletes:
- Measure: Recovery between efforts
- Evaluate: Consistency under fatigue
- Test: Endurance without committing to a fixed distance
Course & Event Environment
- Course: Scenic trail-based 5K loop
- Markers: Clearly marked course
- Location: Start/finish located at a central base area
- Aid Station: Available each hour
Family- and crew-friendly atmosphere.
How Far Will You Go?
- 1 Loop: 5K
- 2 Loops: 10K
- 4 Loops: Half Marathon
- 9 Loops: Marathon
- 10 Loops: 50K
You are never locked into a distance. Each loop is a new decision.
Who Should Register?
- Runners: Of all levels
- Athletes: Training for longer events
- Anyone: Curious how far they can go — one loop at a time
- Challenge: Anyone who wants an endurance challenge without failure pressure
The Philosophy
This isn’t about speed alone. It’s about discipline, recovery, decision-making, and endurance.
Run the loop. Recover. Decide. Repeat.
Results, Rankings & Bragging Rights
- Timing: Official timing for every completed loop
- Ranked: Results ranked by loops completed and combined time
- Data: Post-race data you can analyze, share, and build from
Ready to See How Many Loops You’ve Got?
Course map
Hotels for race weekend
Live prices near the start line, Nov 20 – 22, 2026.
Train with a club
Run clubs near Stillwater to train with before race day.
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