⏵ Course guide · Eastern Oklahoma loop ultra
Outlaw 100 Oklahoma sends every distance around the same 13-mile loop at Twin Mountains Offroad Park near Quinton, more than 2,000 feet of gain each time through, rocky climbs and powerline ascents included. I will walk you through the loop structure and cutoffs first, then give you a pacing and fueling plan built for a repeating, well-aided vert-heavy day, plus free tools to dial in your own numbers.
These facts come from the official outlaw100.com site. Course markings, cutoffs, and logistics can change year to year, so confirm the current details before you register or run.
Every runner at Outlaw 100, from the 5K to the 135 mile, shares the same 13-mile loop through Twin Mountains Offroad Park, just a different number of times around.
The loop packs in more than 2,000 feet of elevation gain across rocky climbs, creek crossings, runnable jeep roads, steep powerline ascents, and stretches of a historic stagecoach trail. The 100 mile distance runs it seven times, then adds one final 9-mile loop to close in on 100 miles, for roughly 17,500 feet of total climbing, a serious vert total for an Oklahoma course.
Aid sits at roughly miles 5.5, 9, and 13 on every loop, with the mile 9 and mile 13 stops doing double duty as start/finish, and bathrooms available at mile 13. That density means you are rarely more than a few miles from support, a real advantage on a course with this much repeated climbing.
The 135M and 100M start together Saturday at 6:00 AM, the 50M follows at 6:30 AM, and the marathon, half marathon, and 5K each get two start options across the weekend. Sharing a loop with runners on wildly different distances is part of the appeal here: you will pass and be passed by people running a fraction, or a multiple, of your own race.
With every distance built from the same 13-mile, 2,000-plus-foot loop, your own splits from lap to lap are the clearest signal you have about how the race is actually going.
Use your first loop, run conservatively, as your baseline, then compare every following loop against it rather than against an arbitrary goal pace. A 13-mile loop with this much climbing punishes early overreach hard, and the repeating format makes that overreach easy to spot before it compounds across seven or more loops.
For the 100M and 135M, work backward from the 48-hour cutoff after every single loop rather than waiting until you feel behind. A grade-adjusted pace target for the climbs and powerline sections keeps early loops from running faster than you can actually sustain seven-plus times over.
⏵ Free tools to pace this course
Three aid stations every 13-mile loop is generous spacing for the longer distances, so build a per-hour plan and let the aid stations top it off rather than trying to carry everything.
Aim for roughly 60 to 90 grams of carbohydrate per hour while moving, and sodium in the 300 to 700 mg per liter range. Mid-February in eastern Oklahoma can run mild in the afternoon and drop hard overnight, especially for the 100M and 135M fields on course into a second night, so plan layering and warm fluids for the cold hours as much as your carb intake for the warm ones.
Because every distance passes back through the mile 9 and mile 13 aid stations repeatedly, drop bags and crew access at those points can carry more of your nutrition plan than they would on a point-to-point course. Plan what you want waiting for you at each pass rather than carrying a full race worth of supplies from the start.
⏵ Build your fueling plan
Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal distance, and a mid-February Oklahoma day with the free ultra fueling calculator. Browse the rest of the free running tools at the tools hub.
⏵ Train for it with Summit Line
Get a training plan built around YOUR fitness and the repeated climbing this 13-mile loop demands. Summit Line reads your real training, builds the vert-specific durability your distance needs, and rehearses your fueling so race day is something you execute, not guess at.
Every distance shares the same 13-mile loop at Twin Mountains Offroad Park, with more than 2,000 feet of gain each time around. The 100 mile distance runs the loop seven times, then finishes with one additional 9-mile loop to land close to 100 miles, for roughly 17,500 feet of total climbing. The 135 mile stacks even more of the same loop on top of that. Passing through the same aid stations repeatedly means you get to know the climbs and the crew access points quickly, even on your first lap.
Both the 100 mile and 135 mile distances share a 48-hour cutoff from a Saturday 6:00 AM start, which pushes the finish window into Monday morning. The 50 mile gets 39.5 hours from its 6:30 AM start, while the marathon, half marathon, and 5K all close out by 10:00 PM the same day they start. Confirm the current year cutoff sheet before race day since exact aid-station-level cutoffs were not published on the main event page at the time of writing.
The terrain mixes rocky climbs, creek crossings, runnable jeep roads, and steep powerline ascents, with sections following a historic stagecoach trail. More than 2,000 feet of gain on a repeating 13-mile loop adds up fast for the longer distances, roughly 17,500 feet for the 100 mile alone, so this is a genuinely vert-heavy Oklahoma course rather than a flat gravel spin. The loop format does mean you are never more than about 13 miles from a full aid station, which helps manage the difficulty.
With aid stations at roughly miles 5.5, 9, and 13 on every loop, you have frequent chances to restock rather than needing to carry a full race worth of nutrition. Aim for roughly 60 to 90 grams of carbohydrate per hour while moving and sodium in the 300 to 700 mg per liter range, adjusted upward for a mid-February Oklahoma day that can still swing warm in the afternoon and cold overnight for the 100M and 135M fields. Build your own numbers with the free ultra fueling calculator.
The repeating 13-mile loop is a real advantage for a first attempt: you learn the course quickly, aid is never far away, and the 48-hour cutoff is generous for roughly 17,500 feet of gain. The terrain itself, rocky climbs and jeep roads rather than exposed high-mountain trail, is demanding but approachable for a well-prepared first-timer. Treat the loop-by-loop splits as your own built-in progress check throughout the race.
Expect a mix of rocky climbs, creek crossings, sections of runnable jeep road, steep powerline ascents, and stretches that follow a historic stagecoach trail. It is varied enough that no single mile feels like the last, which helps on repeat loops, but the powerline climbs and rocky sections mean this is not a fast, non-technical course either.
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<a href="https://runsummitline.com/guides/outlaw-100-oklahoma">The Outlaw 100 Oklahoma course guide</a><iframe src="https://runsummitline.com/embed/race/outlaw-100-oklahoma" style="width:100%;max-width:420px;height:180px;border:0;" loading="lazy" title="Outlaw 100 Oklahoma course guide by Summit Line"></iframe>This guide is independent and for planning only. The format, date, and course come from public sources and can change year to year, so confirm the current specifics with the official race before you register or run. The fueling and pacing advice is general and not medical advice.
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