How to import a .gpx file into a Garmin 765T to create a custom route

[routeconverter]

I'm a motorcycle rider.. great hobby...

Yes!

I can download the file... got 4 of them that I can't wait to ride... my issue is that I have a Garmin 765T that I use when I ride... I'm having issues getting these routes into my Garmin 765T in a format that I can use. So, I have these 'custom routes' with the GPS way-points... I just can't get them in into the Garmin for me to chose from to follow.

I don't know the Garmin 765T but it seems to be at least an upper middle class device. That means it should offer access to a memory card or it's internal filesystem via USB I guess to load and store routes.

The work around that I've found is taking down the GPS coordinates of a select few (or larger number) of way points and putting them in, one by one, into a custom route that I create... but there is a part of me that thinks that this is the LONG and WRONG way...

That's tedious and error prone and definitely not the right way.

What I want to do or ask are the following:
- if you understand what I'm trying to do, is there an easy/easier way than what I've been doing?

Yes, try to create a route on the device and then get access to it's file system to retrieve it. The format of that route and it's location is most probably what you need for custom routes.

- the Garmin has a limit of 100 or 150 way-points... some of the routes that I get from OpenRoadJourney.com have way-point lists of 400+... some even in the thousands... How do I pare such a list down to something reasonable that the Garmin can use? For instance, how do I pick every 5th or every 10'th way-point... is that possible?

There are several algorithms for this in the 'Plan/Transform Track into Route' dialog. Starting from simple pick every 5th waypoint to the Douglas-Peucker Algorithm.

Hopefully I've been clear with my issue and someone can help point me in the right direction...

I hope understood my idea despite of my solid half knowledge of your GPS device? If not, how can I help you?