v1.1 UPDATE: Okay, I lied about future development. Support has been added for any number of GPS links. Be aware, the plugin will simply try to convert any string with “::” in it to a GPS link, so if you’re in the habit of using that in your posts, I recommend finding the declaration for the $searchBit variable in the PHP, changing it to whatever delimiter you like, and adjusting your post syntax accordingly.
v1.0: 
This plugin will replace -one- properly formatted string in a post with a Google Maps link to the included GPS coordinates. The map will load in a new window/tab at zoom level=14, normal map view.
I wrote this to use when posting from my Nokia N810 handheld with WordPy, making it very easy to add a Google Maps link to my current location without using the wp-admin site, which is slow and clumsy on the handheld’s browser.
Features are minimal (only does the one thing, really), and usability could definitely use a bump. Even so, no additional development on this plugin is planned; I would suggest users looking for more comprehensive functionality take a look at WP Geo.
USAGE: 
You will need three bits of info: 
 A) GPS North-South coordinate 
 B) GPS East-West coordinate 
 C) Link text
Then, type that info using the following format into your post:
:gps:C::A::B:gps:
For example, if you wish to post a link to a map of GPS coordinates 32.970705,-116.955461 as reported by your GPS device/handheld/etc, simply type the following string into your post:
:gps:And this is an example link.::32.970705::-116.955461:gps:
And the plugin will convert that to the following markup when WordPress renders the post:
<a href='http://maps.google.com/maps?f=q&source=s_q&hl=en&z=14&geocode=&q=32.970705 ,+-116.955461' rel="nofollow ugc">And this is an example link.</a>

Google Maps GPS Link

Converts a properly formatted string with GPS coordinates in a post to a Google Maps link.

WP-Routes Plugin allows you to embed routes into wordpress posts and pages. It is ideal for WordPress Blogs dedicated to cyclists, mountain bikers, runners, joggers, walkers, hikers, swimmers, canoeists, sailers, motorbikers and anyone else looking for routes, trails or tracks, on roads, paths, trails or even on water.
WP-Routes
<a href="http://www.gpsies.com/" rel="nofollow ugc">GPSies</a> is an interactive service that lets you view, print or download routes, tracks and trails. These routes are available on-screen for those researching new tracks, printable for those who want to take a paper copy with them or downloadable to a wide variety of devices for those a little more tech savvy.
Routes are searchable by an interactive map and list details such as distance, elevation, route characteristics etc. It uses the GPSies API [http://www.gpsies.com/api/GPSiesAPI_en.pdf] and allows you to embed GPS maps direct into your wordpress blog.
Based on an original idea by Flavio Alberti [http://flavio.alicubi.net/gpsiesembed/] and further developed by <a href="https://plus.google.com/106960773695030875332/about" rel="nofollow ugc">Mark Taylor</a> at <a href="http://www.bikes.org.uk/" rel="nofollow ugc">Bikes.org.uk</a>.
Map Features
The WP-Routes plugin feature rich and fully interactive maps. Key features include;
<ul>
<li>Interactive Map</li>
<li>Zoom In & Out</li>
<li>Highlighted Route</li>
<li>Route Distances in kilometers & miles</li>
<li>Altitudes in meters & feet</li>
<li>Dynamic Altitude Profile</li>
<li>Altitude Range (min & max altitudes)</li>
<li>Total Climb & Descents</li>
<li>Printable Map</li>
<li>Download to GPS Devices</li>
<li>Track Types</li>
<li>Locations (country, city, latitude, longitude)</li>
</ul>
One of the things that puts this GPS route finder ahead of other web services is that each route can be downloaded in a wide variety of file types, including downloads to all the leading GPS devices. This is the full range of downloadable options;
<ul>
<li>On-Screen via GPSies Website</li>
<li>Printable Routes</li>
<li>Google Earth .kml or .kmz file</li>
<li>GPX Route & Trail</li>
<li>CSV or MS Excel file</li>
<li>PCX5 Track</li>
<li>Garmin Course CRS & TCX</li>
<li>OVL (ASCII)</li>
<li>Fugawi</li>
<li>KOMPASS Verlag</li>
<li>GeoRSS Track</li>
<li>OziExplorer</li>
<li>MagicMaps IKT</li>
<li>JSON Track</li>
<li>PathAway</li>
<li>Navigon RTE 5.x & 6.x</li>
<li>Navigon Freshroute</li>
<li>TomTom ITN</li>
<li>Magellan Track</li>
<li>CompeGPS Track</li>
<li>qpeGPS Track</li>
<li>Garmin Logbook</li>
</ul>

WP-Routes Plugin

Add Cycle Routes, Mountain Bike Trails, Running Tracks, Walking Routes and much more to your posts and pages.

Google Maps GPS Link vs WP-Routes Plugin