Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Horacio Nava
Table title:
Achievements
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Year </th><th colspan=1 rowspan=1 > Competition </th><th colspan=1 rowspan=1 > Venue </th><th colspan=1 rowspan=1 > Position </th><th colspan=1 rowspan=1 > Event </th><th colspan=1 rowspan=1 > Notes </th></tr>
<tr> <th colspan=6 rowspan=1 > Representing Mexico </th></tr>
<tr> <td colspan=1 rowspan=1 > 1999 </td><td colspan=1 rowspan=1 > World Youth Championships </td><td colspan=1 rowspan=1 > Bydgoszcz, Poland </td><td colspan=1 rowspan=1 > 5th </td><td colspan=1 rowspan=1 > 10,000 m track walk </td><td colspan=1 rowspan=1 > 44:41.89 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2001 </td><td colspan=1 rowspan=1 > Pan American Junior Championships </td><td colspan=1 rowspan=1 > Santa Fe, Argentina </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 10,000 m track walk </td><td colspan=1 rowspan=1 > 43:33.92 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2003 </td><td colspan=1 rowspan=1 > Pan American Race Walking Cup </td><td colspan=1 rowspan=1 > Tijuana, México </td><td colspan=1 rowspan=1 > – </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > DNF </td></tr>
<tr> <td colspan=1 rowspan=1 > Universiade </td><td colspan=1 rowspan=1 > Daegu, South Korea </td><td colspan=1 rowspan=1 > 8th </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > 1:26:24 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2004 </td><td colspan=1 rowspan=1 > NACAC Under-23 Championships </td><td colspan=1 rowspan=1 > Sherbrooke, Quebec, Canada </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 20,000 m walk </td><td colspan=1 rowspan=1 > 1:33:29 </td></tr>
<tr> <td colspan=1 rowspan=3 > 2005 </td><td colspan=1 rowspan=2 > Pan American Race Walking Cup </td><td colspan=1 rowspan=2 > Lima, Peru </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:59:26 A </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Team (50 km) </td><td colspan=1 rowspan=1 > 6 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Helsinki, Finland </td><td colspan=1 rowspan=1 > 9th </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:53:57 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2006 </td><td colspan=1 rowspan=1 > World Race Walking Cup </td><td colspan=1 rowspan=1 > A Coruña, Spain </td><td colspan=1 rowspan=1 > 7th </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:48:22 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=2 > 2007 </td><td class="highlighted"  colspan=1 rowspan=1 > Pan American Games </td><td colspan=1 rowspan=1 > Rio, Brazil </td><td class="highlighted"  colspan=1 rowspan=1 > 2nd </td><td class="highlighted"  colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:52.35 </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Osaka, Japan </td><td colspan=1 rowspan=1 > 9th </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:58:17 </td></tr>
<tr> <td colspan=1 rowspan=3 > 2008 </td><td colspan=1 rowspan=2 > World Race Walking Cup </td><td colspan=1 rowspan=2 > Cheboksary, Russia </td><td colspan=1 rowspan=1 > 5th </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:47:55 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > Team (50 km) </td><td colspan=1 rowspan=1 > 29 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > Beijing, China </td><td colspan=1 rowspan=1 > 6th </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:45:21 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2009 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Berlin, Germany </td><td colspan=1 rowspan=1 > 19th </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:56:26 </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=3 > 2010 </td><td class="highlighted"  colspan=1 rowspan=2 > World Race Walking Cup </td><td colspan=1 rowspan=2 > Chihuahua, Mexico </td><td class="highlighted"  colspan=1 rowspan=1 > 2nd </td><td class="highlighted"  colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:54:16 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > Team (50 km) </td><td colspan=1 rowspan=1 > 22 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > Central American and Caribbean Games </td><td colspan=1 rowspan=1 > Mayagüez, Puerto Rico </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:56:45 </td></tr>
<tr> <td colspan=1 rowspan=2 > 2011 </td><td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Daegu, South Korea </td><td colspan=1 rowspan=1 > 20th </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > 1:24:15 </td></tr>
<tr> <td colspan=1 rowspan=1 > Pan American Games </td><td colspan=1 rowspan=1 > Guadalajara, Mexico </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:48:58 </td></tr>
<tr> <td colspan=1 rowspan=3 > 2012 </td><td colspan=1 rowspan=2 > World Race Walking Cup </td><td colspan=1 rowspan=2 > Saransk, Russia </td><td colspan=1 rowspan=1 > 11th </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:51:23 </td></tr>
<tr> <td colspan=1 rowspan=1 > 4th </td><td colspan=1 rowspan=1 > Team (50 km) </td><td colspan=1 rowspan=1 > 49 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > Olympic Games </td><td colspan=1 rowspan=1 > London, United Kingdom </td><td colspan=1 rowspan=1 > 15th </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:46:59 </td></tr>
<tr> <td colspan=1 rowspan=3 > 2013 </td><td colspan=1 rowspan=2 > Pan American Race Walking Cup </td><td colspan=1 rowspan=2 > Ciudad de Guatemala, Guatemala </td><td colspan=1 rowspan=1 > 2nd </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:58:00 A </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Team (50 km) </td><td colspan=1 rowspan=1 > 12 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Moscow, Russia </td><td colspan=1 rowspan=1 > 32nd </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:58:09 </td></tr>
<tr> <td colspan=1 rowspan=1 > 2014 </td><td colspan=1 rowspan=1 > Central American and Caribbean Games </td><td colspan=1 rowspan=1 > Xalapa, México </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 20 km </td><td colspan=1 rowspan=1 > 1:25:05 A </td></tr>
<tr> <td colspan=1 rowspan=3 > 2015 </td><td colspan=1 rowspan=2 > Pan American Race Walking Cup </td><td colspan=1 rowspan=2 > Arica, Chile </td><td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > 50 km </td><td colspan=1 rowspan=1 > 3:45:41 </td></tr>
<tr> <td colspan=1 rowspan=1 > 1st </td><td colspan=1 rowspan=1 > Team (50 km) </td><td colspan=1 rowspan=1 > 7 pts </td></tr>
<tr> <td colspan=1 rowspan=1 > World Championships </td><td colspan=1 rowspan=1 > Beijing, China </td><td colspan=1 rowspan=1 > 28th </td><td colspan=1 rowspan=1 > 20 km walk </td><td colspan=1 rowspan=1 > 1:24:40 </td></tr>
</table>
Question:
In what events was Horacio Nava runner up?
Answer:
Horacio Nava was the runner-up over 50 km at the 2007 Pan American Games and the 2010 World Race Walking Cup.