East Devon 5 or 8 Trigs
20th November @ 7:00 am
We’ll be taking a break in 2024, but this will return in 2025 with a few changes.
- 33 and 21 mile (53km /34km) options
- Self navigate
- Pairs or teams
- Solo entries available for confident navigators
- Open to runners and walkers
Trigpoints are the common name for “triangulation pillars”. These are concrete pillars, about 4′ tall, which were used by the Ordnance Survey in order to determine the exact shape of the country. They are generally located on the highest bit of ground in the area, so that there is a direct line of sight from one to the next. By sitting a theodolite (an accurate protractor built into a telescope) on the top of the pillar, accurate angles between pairs of nearby trigpoints could be measured. This process is called “triangulation”.
