The course: where Fire Fest is won and lost
The whole thing is built on one roughly 17-mile loop of desert backcountry trail, winding past sandstone walls and petroglyphs on the Logandale system. The shorter distances run a lap or two; the 100K and 100 grind out lap after lap. It is rolling, not alpine, so success here is less about surviving a giant climb and more about managing repetition, footing, and the clock.
The loop: rolling, sandy, and sneaky
Do not let the lack of a big mountain fool you. The Logandale backcountry rolls constantly, and the footing swings between packed dirt and soft, sandy, washy sections that quietly tax your legs and your pace. There is no single climb to fear, which is exactly why people go out too comfortable and bleed time later. The aid is close together on the loop, with a fork aid station early, a 10K turnaround, and a water-only point partway out before you close back at the start/finish, so you are rarely far from help. That is a real advantage if you use it instead of abusing it.
Because you repeat the same ground, you get the gift of knowing exactly what is coming. Use your first lap to scout: note where the sand slows you, where you can actually run, and where you want to eat. By lap two or three you should be running the course on rails, spending zero brainpower on navigation and all of it on staying fed and moving.
The night: cold desert dark on the 100 and 100K
If you are running the 100 or 100K, the night is the real test, not the terrain. Late-November desert flips hard once the sun drops, and warm afternoon turns into genuinely cold dark, the kind that saps your will and your hands. This is where the looped format earns its keep: you pass your drop bag every lap, so you can pick up a headlamp, batteries, gloves, and a warm layer right when you need them instead of carrying it all day. Plan your lighting and layers around sunset before you start, not when you are already shivering and fumbling.
The other night trap is the chair. With a 35-hour cutoff and the start/finish in your face every lap, it is easy to sit down, get warm, and lose an hour. A short, purposeful stop is fine. A long one in a cold race is how good runners quietly DNF. If you plan to nap, set a hard time limit and have someone get you up.
Crew, pacers, and drop bags on a loop
A loop course is a crew dream. Your people post up at the start/finish and see you every lap, so you do not need a complicated chase plan. Give them a simple sheet: what you want handed to you, what to watch for (am I eating, am I warm, am I lucid), and permission to push you back out the door. On the longer distances, a pacer for the night laps is worth a lot, both for safety in the cold dark and for the simple job of keeping you moving when your brain wants to quit.
Stage your drop bag like a station you hit on repeat: your own carbohydrate, spare light and batteries, warm layers and gloves, sun protection for the day, dry socks, foot care, anti-chafe, and a backup bottle since the race is cupless. One organized bag you pass often beats a pile you dig through at 2 a.m.
The late-race lows and the cutoffs
Every long ultra has a low patch, and on a repeating loop the low is mental as much as physical: you are tired of the same dirt and the finish feels far. That is normal. Break the race into laps, not miles, and just go get the next one. Eat before you feel bad, because the desert and the night both kill your appetite and a calorie deficit is what turns a low into a death spiral.
The cutoffs are generous (35 hours for the 100, 25 for the 50 mile, 15 for the Saturday 50K), but generous cutoffs reward forward progress, not rest. Know your time budget per lap and protect it. If you keep eating, keep your feet decent, and keep walking when you cannot run, this course gives most prepared runners the room to finish.
Pacing strategy for a rolling desert loop
Fire Fest is won by even effort and discipline, not by a hero climb. The rolling terrain and soft footing make your flat-ground pace a lie, and a looped course tempts you to bank time early and pay for it in the dark. Run the first laps slower than you want to.
Run by effort, not by your road pace
Soft sand and constant little rollers mean your watch pace will not match how hard you are working, so pace by effort, especially early. On the 100 and 100K the classic mistake is feeling great on lap one and running it like a 50K, then watching the wheels come off after dark. Hold a steady, conversational output you could keep for far longer than you think you need to, and let the back half come to you. A grade-adjusted pace helps you turn your real fitness into honest targets so the rollers do not trick you into overcooking the start.
Build a realistic finish and work it back to laps
Do not guess your Fire Fest finish off a road time. The soft footing, the rolling gain, the heat, the cold, and the time on feet all add up, and on a loop you want a target lap split, not just a finish number. Build a realistic finish window, then divide it into a per-lap budget that fades a bit as the race goes (because it will), so you always know whether you are ahead of the clock. Working back into the cutoffs lap by lap is how you keep a generous time limit from lulling you to sleep.
⏵ Free tools to pace this course
- Grade-adjusted pace calculator to turn your flat fitness into honest effort targets for the rollers and the sand.
- Race-time calculator for a realistic finish window you can split into a per-lap budget and plan against the cutoffs.
- Race-equivalent calculator to turn a recent race result into a Fire Fest goal you can actually hold for the whole distance.
Fueling strategy for a long day and a cold night
Depending on your distance, Fire Fest is anywhere from a handful of hours to well over a day on your feet, in desert heat that fades into cold dark. That makes steady carbohydrate, real sodium, and a plan for the night just as important as your fitness.
Carbs: steady, trained, and easy to get down
For the shorter distances, aim for roughly 60 to 90 grams of carbohydrate per hour, leaning high only if your gut is trained for it. For the 100K and 100, you cannot ride that top end the whole time, so settle into a steady rate you can actually stomach hour after hour and never let yourself fall into a hole. The desert dries you out and the night kills your appetite, so favor things that go down easy and keep eating on a clock, not on feel. Practice your exact race-day intake on long runs so it is boring and automatic, not an experiment at mile 70.
Sodium and fluid: desert day, cold night
Even in November, dry desert air pulls water out of you faster than you notice, so do not under-drink just because it is not blazing hot. Match your sodium to your sweat, often somewhere around 500 to 700 milligrams per liter of fluid, and more if you run salty or cramp easily. Remember it is a cupless race, so you are managing your own bottle or flask between aid points and at your drop bag. At night, warm fluids and real food (broth, anything hot) do double duty: calories plus heat. Weigh yourself before and after a long run to find your real sweat rate, then build the plan around your own number.
⏵ Build your fueling plan
Get a carb, sodium, fluid, and caffeine plan per hour built for your weight, your goal time, and your Fire Fest distance with the free ultra fueling calculator. Browse the rest of the free running tools at the tools hub.
This guide is independent and for planning only. The course details, dates, cutoffs, and aid stations 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.