There were 52 mash-ups running for the prize and I believe it was very difficult for the members of the jury, Matthew "Chewy" Trewhella, from Google, Mike Pegg from Google Maps Mania and Javier Casares from Ojobuscador, to choose.
Wikiloc got the first prize and I believe it fully deserved it. At Wikiloc you can publish and share your GPS routes and it's available in English, Spanish and Catalan. Wikiloc includes a lot of nice features, route profile, images, alternative maps, KML for Google Earth, etc. Using it you will realize that Wikiloc's developer, Jordi L. Ramot, loves his project, it's full of nice details.
- example of route at Wikiloc -
Tagzania was also there, a wonderful project that is working very good and with a huge community behind. It was one of the first mash-ups launched in july 2006 and maybe the example that encouraged so many developers in Spain to start working with Google Maps API.