One of my last classes in law school is Legal Practicum. It involves working on multiple cases, most of which involve some form of litigation. Litigations involve trials. Thus, I end up writing the word "trial" quite often.
This year, Pete and I have our eyes on running a few more trail races than last year. We've been able to run almost every Monday on the trails at Wild River. Thus, I end up thinking about trails quite often.
A trail run can be something of a trial, in the non-legal sense. I'm not certain how a trial is like a trail, except that, at the end of this month I have a 5 hour trial and that seems about as long as some trail runs. (but not as enjoyable)