Night hiking is a tricky business.

In my part of the world, wildlife use the same corridors and trails at night. Your chances of meeting a bear or large ungulate increase, and it's hard to have the same situational awareness as in daylight.

Off trail work raises the injury potential. It's surprisingly easy to run a branch into your eye or step into a hidden hole.

I would note that the excellent LED lights we have now help to mitigate these hazards to some degree. A good headlamp with a blowtorch handheld would be the combination I'd choose. Note that large animals don't necessarily run from bright light though. Some would argue that a light that preserves your night vision might be a better choice (at least when there is some ambient light out there).

My 2c.

P.S., Don't expect to make nearly the miles during a night hike that you would make during the day in the same terrain.