4-hour fuel is tested and hand mixed in Bend Oregon. If you are ever in the area come say hi!
4-hour HQ
61445 Barleycorn lane

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Jason pitched me the Yukon 1000 way too late. Our yearly schedule was already pretty packed, but the race had finally returned after a multi-year break. Somehow, we had just enough space to wedge it into our lives. Jason had two weeks—two—to recover from the Endless Mountains Expedition Race, a 5–6 day sufferfest that usually earns you six weeks of horizontal living. Whatever. We’d finished the 500-mile Yukon River Quest and learned one thing that mattered more than anything else:
Success on the Yukon comes down to two things: a fast boat and unreasonable determination.
We had the race slot. We rented the boat. We put it on the calendar, recovery be damned.
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The prep (if we can call it that)
A few days before departure, we packed the bare minimum: mandatory gear and an entire duffel of fuel. Voluntary luxuries:
• paddling gloves
• Skin Doctor
• a waterproof shower speaker (for morale and questionable taste in music)
We figured we could cram the empty duffel inside the boat for the race, then re-pack and fly home wearing the finisher shirts. The duffels aren’t waterproof anymore, but they should contain the smell.
At this point it’s probably obvious: Jason and I are idiots, in the best possible way.
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Food: The One Thing We Didn’t Screw Up
We fueled for 18 hours a day of 4HF—every day—for six days straight. Then we added:
• candy & gummies for “emergency joy”
• “emotional food” for when the universe felt too large or too rude
• dinner: instant ramen plus peanut butter, which sounds criminal but becomes holy somewhere around hour 57
Was it gourmet? No. Did it keep the engines running? Absolutely.
We never bonked - and we paddled through our emotional low points. In a race like this, that’s the difference between laughing at your mistakes during the race, and needing a few weeks (or months, or years) before laughing at them.
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Mistakes start early
Our hotel rating? A courageous 1.5 stars. Many claims of bedbugs. We didn’t see any… probably?
Most teams arrived early enough to test their boats. We did not. We grabbed the boat, stared at it like it was some unfamiliar IKEA object, packed it, went to the briefing, and rolled up to the start line.
Two hours into day one we learned the boat had dual steering, and Jason’s braced feet were canceling out all my inputs. We swerved across the river like my kiddo trying to canoe. An hour later, we realized the seats were medieval punishment devices. We rebuilt the cockpits and sat on camping pads instead—which meant sleeping on wet camping pads later. A flawless system.
Still, we smashed day one and built a lead. Didn’t stop us from looking over our shoulders for the next 800 miles.
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Bugs. Ramen. Regret.
We brought zero bug protection besides our tiny tent. No head nets. No bug-proof clothing. We were essentially a free-range blood buffet.
Dinner - the only part of our food plan that sucked: instant ramen from Whitehorse, untested. It was psychedelic-level spicy. Jason tapped out. I finished it. I saw sounds.
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Navigation chaos
Our route was on my phone. My hands were too wet to use it. Our GPS watches saved us—tiny 1.5” windows of hope—but charging them meant no navigating, so we spent hours winging it.
Day three we reached the end of my downloaded maps. Beyond Dawson City, the maps become more… interpretive. Then came wildfire smoke. Masks were required gear, but not compatible with “move fast and breathe hard,” so we ditched them and paddled through a ghost-world haze.
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Caffeine failure
Day four: we ran out of caffeine. Things got quiet inside our brains.
Jason paddled while I napped. He claims I promised him my new car if we flipped, but he didn’t get it in writing.
Day five we passed a group doing the same route in a month. We were on pace for under six days.
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Finish: Where the Mistakes Turn Into a Story
We crossed the line just shy of 5 days, 12 hours, breaking the course record by over 12 hours. We didn’t look like champions. More like two crusty, sleep-deprived, old-world explorers who had paddle technology from the future.
And here’s the quiet truth I carried home:
You can mess up so much and still succeed.
You can be under-trained.
You can forget the bug nets.
You can argue with your steering system and your ramen seasoning and your navigation tools.
As long as the essentials are locked.
For us, those essentials were:
• a boat that wanted to go fast
• fuel that kept us human
• a promise to keep moving, no matter how stupid the day had been
Because most failures are survivable, and some become the stories that change you. But there are two mistakes you don’t walk away from:
You can’t lose your nutrition. When the tank goes empty, the Yukon doesn’t negotiate.
You can’t lose your boat. Everything else is improv. That part isn’t.
And that’s why we build fueling plans the way we do—because when everything else falls apart, nutrition is the piece you can’t afford to gamble on.
Chelsey and I are heading back this year. We’ll bring bug nets. We’ll dial the cockpit a bit smarter. And yes—we’ll test the ramen.
But the heart of it won’t change:
Eat. Paddle. Laugh at your mistakes. Keep moving.
That’s how you finish the Yukon.
And honestly, it’s how you finish most things worth doing.
We debated long and hard about keeping this secret for ourselves as athletes, but the only thing that is more rewarding than being on the podium at an ultra-distance event, is helping others get to their personal podium! Over the past three years, we've had such success with this formula and fueling paradigm. It has been an integral part of the team's success at our wins of the Patagonian Expedition Race, Expedition Canada, Everglades Challenge, WA360 paddle race, and Chesley's Solo 24 national title. The longer the race (or stage), and the higher output we want/need to maintain - the more crucial it has become.
Energy uptake is key for a great performance in sport over 3 hours. After 15 years with long distance endurance sport I have gotten tired of food during races. But energy that you can drink is easy to consume and get you going.
I always divide my food in 3 groups: high density energy, motivational stuff and funfood. This 4-hour Fuel counts as all 3 at the same time.
24-hour races are all about efficiency if you want to be competitive. In the 2021 USARA nationals, we used 4-hour fuel as 90% of our calories. We never got sick of it and felt powerful on every stage. My team's race plan now includes 4-hour Fuel!
My name is Mateo and I am an ultra endurance bike pack racer based in Bend, Oregon. I have been using your product now for a few months and cannot praise it enough. With the rigors of training, travel and racing, your product is honestly the best supplemental calories in a mixable form that I have ever found.
Daniel Staudigel
fuel designer
Team Bend Racing's Daniel Staudigel developed the initial iteration of 4-Hour Fuel after after his spectacular bonk was filmed for all to see in Amazon's "World's Toughest Race: Eco Challenge Fiji". He needed a more efficient and easy tasting fueling solution for his expedition racing. Since that inception, Team Bend Racing has used the 4-hour fuel across the globe on their way to podium placements in expedition races, 24 hour solo mountain bike events, FKTs, and ultra distance paddling races. Now it is your turn to try it.
How to mix:
Front Country Option (at home) - fill your bottle of choice 2/3 with water (we use a standard 16 or 20 oz bike bottle). Pour that water into a blender, toss in the entire powder packet and blend. Dump into your bottle, and top it off with water. Shake. Go get after it.
For long races that are not super hot, we pre-mix most bottles this way, and leave them in TA bins for up to 60ish hours and have had no problems.
Backcountry mixing (In the TA) - Fill bottle half full with water, then add half the powder and shake like crazy. Add a bit more water and the rest of the powder and shake again. Top off with water and shake as you leave the TA on the way to greatness.
Mixing notes:
It is fine to mix the 4-hr fuel at less than full strength (we recommend at least 1/2 the pack, and then - Congrats, you just made 2-hour tea!), but if you are mixing just 1/4 serving in a bottle (200 cal) - well there are heaps of products out there that do that same thing and will likely taste better at that dilution. We've mixed this formula at all strengths from 2-6 hours in a single bottle and consensus is that the 4-hour strength is the best taste/nutrition/weight ratio for us. Remember, this is high density caloric fuel! That bottle is supposed to last you for 4 HOURS. So it is not your primary hydration source. Carry a separate bottle or bladder with good old straight water. Yum.
Product Concept - we are firm believers in simplicity and science, and yet our experience in expedition racing has often put us into physical and emotional places that are very under-researched. There is plenty out there on how to fuel for a marathon, or a Ironman....but what about when you have to carry all your food?!? No aid stations. Unfathomable distance. And then we add sleep deprivation which just makes everything (fueling included) so much harder.
For our team - this product solves many problems. It eliminates choice. Having a singular primary and palatable fuel source takes the "choice" aspect away from where we get our calories. We know we are getting a "race proven" mix of easy to digest complex carbs, plant based protein, extra BCAAs, electrolytes, and natural fruit sugars.Liquid food is much easier to digest in many race situations, allowing for endurance racers to maintain a competitive output. Bike bottles are convenient and fast to drink from, making it easy to stay fueled on the legs (bike and paddle) that generally have athletes having to choose between slowing down to eat or digging a deep caloric hole as they try to maintain speed and efficiency.
Have questions? Of course you do. Fire away. You can email us at bendracingor@gmail.com or reach out to Jason Magness or Daniel Staudigel or Bend Racing on FB and we are happy to talk. If you wanna tag us in your adventures - we might as well start using #4hourfuel. Thanks so so much everyone.
4-hour fuel is tested and hand mixed in Bend Oregon. If you are ever in the area come say hi!