Additional challenges include time pressure, sleep deprivation, the impact on the body, and the odds:
RAAM is a non-stop, continuous race from start to finish: The clock starts on the start line and ticks on relentlessly, no matter the circumstances.
It is the longest time trial race in the world, meaning no drafting off other riders or cars is allowed.
On average riders only get 2-3 hours of sleep per night for the duration of the race, making it a tremendous mental challenge, also causing hallucinations, muscle weakness, and lack of clear thinking.
On average, it is expected that a rider uses 10,000 calories per day, which needs to be replenished smartly and efficiently.
In 35 years, only 42 women ever successfully finished RAAM solo, some of them even several times. This is a 50% success rate.