how are out and back trails measured ?

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https://outdoormotives.com/what-is-an-out-and-back-trail/

What Is an Out and Back Trail? – Outdoor Motives

What Is an Out and Back Trail?

An out and back trail is a trail that goes from point A (generally the trailhead) to point B then back to point A along the same path. If the hiking trail is 2.5 miles, and it’s an out and back trail, then you know your total hike will be 5 miles.

https://www.reddit.com/r/WildernessBackpacking/comments/75edfu/how_are_out_and_back_trails_measured/

How are out and back trails measured? : WildernessBackpacking

How are out and back trails measured?
byu/Ittakesawile inWildernessBackpacking

A friend and I plan to do a 3ish day trip at the end of this month, and I was confused about how this trail is measured. Is it 17.8 miles to hike in …

https://www.wta.org/news/magazine/features/how-far-is-it-the-truth-behind-trail-measurements

How Far Is It? The Truth Behind Trail Measurements …
https://www.wta.org/news/magazine/features/how-far-is-it-the-truth-behind-trail-measurements
A trail that switches back and forth can lead to inaccurate distances, as measured by GPS. If your location is recorded at intervals, it’s easy to get a shorter distance. If the GPS signal is off due to interference or other issues, it’s also possible to get an inaccurate distance. GPS (How it actually works)

https://outdoors.stackexchange.com/questions/20184/what-does-out-and-back-mean-in-terms-of-understanding-the-length-of-a-trail

hiking – What does out and back mean in terms of …
https://outdoors.stackexchange.com/questions/20184/what-does-out-and-back-mean-in-terms-of-understanding-the-length-of-a-trail
Out and back is the same as total. The 10 mile trail might be 5 miles out and 5 miles back, for example. If you take a different route back, the numbers might not be the same. For example you might go out, around the base of something, up the far side, down the near side, then rejoin your original trail to come back to the trailhead.

https://support.alltrails.com/hc/en-us/articles/360019246371-What-are-the-trail-route-types-

What are the trail route types? – AllTrails Help
https://support.alltrails.com/hc/en-us/articles/360019246371-What-are-the-trail-route-types-
Out-and-Back trails start and end at the same location and follow a single trail or multiple trails to an end point and then return along the same route. Point-to-Point trails start and end in different locations. These routes are often part of a multi-day hiking or backpacking trip or segments of a long distance trail such as the Appalachian …

https://www.nynjtc.org/content/measure-trail

To Measure a Trail | New York-New Jersey Trail Conference
https://www.nynjtc.org/content/measure-trail
The most accurate measurements are done with a measuring wheel which is rolled along the trail and has a revolution counter, frequently calibrated in feet or meters. I have modified my wheel to have a clipboard mounted on the handle for ease in recording data.

https://sweatykid.wordpress.com/2010/10/20/loop-vs-out-and-back-whats-your-route-type-and-why/

Loop vs. Out-and-Back: What’s your route type and why …

Loop vs. Out-and-Back: What’s your route type and why?

Out and back for me. Because I like to run on trails, and I run by distance, mostly. And I’m not geo-savvy enough to figure out loops through the park. So I go out for a bit, turn back and come back for a bit. Works for me. And I’m with you – I like to see how things look so different when you’re coming from the opposite direction.

https://survivallife.com/mark-trails-like-pro/

How To Mark Trails Like A Pro | Trail Marking | Survival Life

How To Mark Trails Like A Pro

Out-and-back: Sometimes called an in-and-out, these are simple trails that head to an endpoint but don’t loop back to the starting place. To return to the trailhead, hikers need to follow the same trail that they followed on the way out.

https://www.skibum.net/do-it-up/comparing-steepness-of-ski-trails/

Comparing Steepness of Ski Trails – SKI BUM

Comparing Steepness of Ski Trails

You could measure the theoretical hypotenuse, or measure side b, but then you’d have an average angle. The average on a consistent slope like Outer Limits at Killington is meaningful, but the average on a slope like Shay’s Revenge at Snowshoe — with a long lead in and run out — gives no indication of how steep the headwall is.

https://www.alltrails.com/trail/us/new-york/avalanche-lake

Avalanche Lake – New York | AllTrails
https://www.alltrails.com/trail/us/new-york/avalanche-lake
Share. More. Avalanche Lake is a 10.2 mile moderately trafficked out and back trail located near Lake Placid, New York that features a river and is rated as moderate. The trail offers a number of activity options and is best used from May until October. Length 10.2 miElevation gain 1,299 ftRoute type Out & back.