2 WHEELS · 10 TRAILS · 24 HOURS
Saturday, July 25 ? Sunday, July 26, 2026 · 6 AM to 6 AM
REGISTER
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The Challenge
You are not prepared.
Judgement Day is DORBA's summer reckoning. Choose your distance. Choose your drivetrain. Then ride ten trails across DFW between the first dawn and the second. No wave starts. No finish-line tape. Just the trails, the heat, and the clock.
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Four Categories
Pick your poison.
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Orange Cap
HELLISH
~70 miles · geared
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Teal Cap
HELLISSH
~70 miles · single-speed
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Red Cap
INSANE
~100 miles · geared
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Purple Cap
INSSANE
~100 miles · single-speed
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Finish your category and earn a top cap in your category's color. Quantities are limited and ordered ahead of the event.
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The Course
Ten trails. One day to claim them all.
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01
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NORTHSHORE
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02
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KNOB HILLS
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03
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CORINTH COMMUNITY PARK
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04
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RIVER LEGACY
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05
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BIG CEDAR
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06
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BOULDER PARK
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07
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HARRY MOSS PARK
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08
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ROWLETT CREEK PRESERVE
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09
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SQUABBLE CREEK
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10
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PECAN GROVE
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Trails 01–03 may be ridden in any order. Trails 04–10 must be completed in the sequence shown.
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The Rules
Before you toe the line.
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DORBA Members Only.
Your DORBA membership must be active through July 26, 2026.
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Registration Closes Wednesday, July 22 · 11:59 PM.
No day-of registration. No exceptions. Sign up below before the deadline.
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Sign The Waiver.
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The Window: 6 AM to 6 AM.
You may not start before 6:00 AM Saturday, July 25. You must finish by 6:00 AM Sunday, July 26. The clock runs continuously between those marks.
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The Trails Stay Open.
Every trail remains open to the public during the event. Ride with awareness. Yield like a guest.
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It Will Be Hot.
North Texas in late July is unforgiving. Hydrate before, during, and after. Carry more water than you think you need. Know when to stop.
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Registered riders will receive event details and instructions by email ahead of the start window.
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Ready?
Sign up below.
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