The Next Loop Endurance Series | Half Day Forest Preserve

What Is The Next Loop?

• Event Type: 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.
• Course: You’ll run a 3.1-mile (5K) trail loop, starting a new loop every hour on the hour.
• Choice: After each loop, you decide to run another loop or stop — no penalties, no DNFs. Every completed loop counts.
• Scoring: The event uses a simple, transparent scoring system that rewards consistency, pacing, and endurance.

How Scoring Works

• Start Time: Time starts when the loop begins.
• Finish Time: Time stops when you cross the finish line.
• Loop Time: That loop time is officially recorded.
• Overall Score: Your overall score is calculated by combining the times of every loop you complete.

Why This Format Works for Everyone

• New Runners: Run your first 5K, 10K, or Half Marathon without pressure.
• Marathon &: Ultra Runners: Test pacing, fatigue, and recovery across multiple hours.
• Hybrid/Functional Athletes: Measure recovery between efforts and evaluate consistency under fatigue.
• Flexible Decisions: You are never locked into a distance: each loop is a new decision.

Course &: Event Environment

• Scenic Loop: Scenic trail-based 5K loop.
• Course Marking: Clearly marked course.
• Base Area: Start/finish located at a central base area.
• Aid Station: Aid station available each hour.

How Far Will You Go?

• 1 Loop: 5K.
• 2 Loops: 10K.
• 4 Loops: Half Marathon.
• 10 Loops: 50K.

Who Should Register?

• All Levels: Runners of all levels.
• Training: Athletes training for longer events.
• Curiosity: Anyone curious how far they can go — one loop at a time.
• Endurance Challenge: Anyone who wants an endurance challenge without failure pressure.

The Philosophy

• Focus: This isn’t about speed alone.
• Core Concepts: It’s about discipline, recovery, decision-making, and endurance.
• Process: Run the loop, recover, decide, repeat.
• Goal: Find your next limit — one loop at a time.

Results, Rankings &: Bragging Rights

• Timing: Official timing for every completed loop.
• Ranking: Results ranked by loops completed and combined time.
• Data: Post-race data you can analyze, share, and build from.
• Registration: Register now and see how many loops you’ve got!