TREC is a three phase competition. The phases can be run in any order but generally
in a 2 day competition the orienteering ride (known as the POR, which is the abbreviation
of its full name in French) is run on the first day with the other 2 phases being
run on the second day.
Level 1 competitions, which are the entry level, are often run over one day with
the other levels mostly being run over the whole weekend. The higher levels involve
longer and more complicated POR courses and often harder PTV and MA courses too.
A level 1 POR is 10-15km long, which is about 6-9 miles, and takes most horses and
riders about 2 hours to complete.
Arena TREC events are run during the winter months in an arena, which can be indoors
or outdoors, with no ride or POR, just a shortened course of obstacles (also known
as PTV) and Control of Paces (MA).