They were indefatigable.

And this was no record run of a single day, but the first day of sixty such days.
Though Daylight had passed a night without sleep, a night of dancing and carouse, it seemed to have left no effect.

For this there were two explanations first, his remarkable vitality; and next, the fact that such nights were rare in his experience.

Again enters the man at the desk, whose physical efficiency would be more hurt by a cup of coffee at bedtime than could Daylight's by a whole night long of strong drink and excitement.
Daylight travelled without a watch, feeling the passage of time and largely estimating it by subconscious processes.

By what he considered must be six o'clock, he began looking for a camping-place.