Big River Last Human Standing Guide

The yard: 3.8 miles, 450 ft, on the hour, every hour

Here is the whole game. Every hour, on the signal, everyone starts the same 3.8 mile loop together, with 450 ft of vertical gain built into that distance. You have 60 minutes to finish it and be ready for the next hourly start. Run it in 45 minutes and you get 15 minutes to sit, eat, and deal with your feet. Run it in 58 and you get almost nothing before turning around and doing it again.

The smart move is to run each loop at a relaxed, repeatable effort and bank rest, not speed. There is no reward for finishing faster beyond a few extra minutes to recover, so the runners who last treat the loop as a job to execute efficiently and protect every spare minute between laps.

Real trail: double-track into technical singletrack

The course opens on double-track for roughly the first half mile before narrowing into singletrack laced with rocks, roots, and low-lying logs. That is a meaningfully more technical yard than the smooth, groomed loops some backyard ultras use, so footwork and focus matter here even before fatigue becomes a factor. The route is marked with arrows and orange flags on your right.

The finish rule: one more loop than everyone else

The race runs until a single runner remains. That winner has to complete one final loop that nobody else finishes, meaning the second-to-last runner's DNF sets the bar the winner has to clear by exactly one more lap. There is no fixed distance and no finish line, just the hourly gate, repeating until someone cannot answer the bell.

Pick a loop pace that survives the rooty sections

On a loop with real singletrack, rocks, roots, and 450 ft of climbing, your target is a pace that leaves genuine rest every hour without ever feeling rushed on the technical footing. Use a grade-adjusted pace to translate the climbing into an honest effort level, since the terrain here will slow you more than a flat 3.8 miles would suggest, and that gap only grows as fatigue accumulates.

Know what your endurance actually buys you here

Even without a finish line, use a recent long trail race or long training block to sanity-check how many hours of repeated technical loops your current fitness realistically supports, so you go in with a genuine picture of when the terrain, not just the clock, becomes the limiter.

Eat every single loop, even when you do not feel like it

Because each loop is short and the target effort stays comfortable, your stomach should handle real food here better than in a flat-out race, and you should use that. Aim for a steady stream of carbohydrate every hour at the aid station, mixing real food with gels and drink mix. The real danger is a slow drift into a calorie hole over many hours, so eat on the same schedule from loop one, before you feel like you need it.

The mental game is a real part of the race

The technical terrain here means the physical grind and the mental grind arrive together. The low points tend to hit hardest as fatigue meets the rooty, rocky sections in fading light or darkness. The trick is to never make a quit decision while you are in a low: finish the loop, sit down, eat something, deal with your feet, and commit to just one more lap before deciding anything.