Carbonfiberboy 

I rode my first century on 32 oz. water, one orange, and one candy bar. Warm sunny day and a hilly ride, too. 7 hrs. ET. That was over 50 years ago.

Now I always have food and water with me, enough to get where I'm going, and nothing to prove. I've found that Snickers are obtainable internationally. Toffee covered peanuts are common and a good thing to put in your top tube bag. 1000 calories is only 1/2 lb. of carbs. Add fat and it's less weight than that. Certainly not an onerous amount to carry during the day on tour.

RR3

Interesting but OP's test was 93 miles, which would require around half a mere pound of fat for fuel.

If you started a multi-day ride at 155 lbs with no fat to burn, how did you get to 150 lbs? Were you dehydrated or was your weight loss a decrease in body fat?

I quickly read the OP's tombs. Sorry if I misunderstand your point.

Gnosis

I meant to add the following earlier but got sidetracked.

Typically the day prior and the morning of a long distance ride, I’ll fill up on foods with lots of rice and noodles since they retain quite a bit of water. When I eat lots of rice and noodles but don’t go for a ride, they make me pee quite often (roughly every 45 minutes or so, at least initially). But via my long distance rides, the water in the rice and noodles gets channeled as required to make sweating possible, so I typically don’t have to pee for hours at a time. So these food types have further reduced my need for water on my long distance rides.

Reynolds 

Impressive ride Gnosis, but I think it's risky to drink so little. Agree you can ride without food longer than most think - I've done many 100-120km rides on water only - but hydration is another, more serious matter IMO.

Dudelsack 

Each to his own. I have a policy of never riding without a Taco Bell or a Dairy Queen within striking distance.

I once powered a 113 mile ride on three hard tacos, some ice cream, and a large Coke. After all, you never know when you may be far from civilization and have to rely only on tacos and ice cream.

Hey, it could happen.

Gnosis

Reynolds, though I sincerely appreciate your sentiment, it honestly was never my intent to present my 93 mile limited food/water ride as any manner of “impressive” feat. I was merely attempting to ascertain what distance I could traverse via limited food/water provisions and then share the outcome with forum members, as it could potentially provide individuals with a fuller realization as to what is humanly possible via long distance bicycle rides as one’s bio-engine achieves a finer state of efficiency.

Initially, when I commenced bicycling on April 18, 2011 at age 55, I required considerably more food and water per a given distance, but now having lost 50 pounds and having commuted exclusively via bicycle for the last 4+ years, my food and water requirements have been reduced dramatically per the same routes and distances.

Dudelsack, I also like Taco Bells and Dairy Queens, but I purposely map out remote passages for their scenic beauty as well as the challenge of knowing there’s virtually no place to stop to eat and drink. This typically forces me to push myself even harder (it’s my nature to push hard) and I’ve continued to benefit from doing so. For instance, I continue to achieve higher average speeds, having this past Sunday achieved a 19.4 MPH average speed via my upgraded 32.6 pound 1995 Giant Rincon 24-speed mountain bike on my way home from church. I traversed a distance of 2.384 miles in a time of 7:23 even though I had to stop for two traffic lights. At age 59, I find myself stunned by the extent of my progress. After my near fatal excruciating heart attack on August 30, 2009 at age 53, I never imagined that I’d be riding a bicycle let alone achieve the distances and speeds that I have. In many ways, that heart attack was one of the best things that ever happened to me, as I’d have never commenced bicycling at age 55 had it not become absolutely essential to my recovery.

ColaJacket

Just be careful that you don't suffer a heat stroke due to your activities. While you can do these things, you should probably carry at least 50% more water than you think you need, if you're out in the middle of nowhere where you can't refill your water. You don't have to drink it, but if you don't have it, and you need it, you could end up in a serious condition that might prevent you from cycling, again.

GH