Example KML file from Google My Tracks

data.kml

<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2"
xmlns:gx="http://www.google.com/kml/ext/2.2"
xmlns:atom="http://www.w3.org/2005/Atom">
<Document>
<open>1</open>
<visibility>1</visibility>
<name><![CDATA[Test]]></name>
<atom:author><atom:name><![CDATA[Created by Google My Tracks on Android]]></atom:name></atom:author>
<Schema id="schema">
<gx:SimpleArrayField name="power" type="int">
<displayName><![CDATA[Power (W)]]></displayName>
</gx:SimpleArrayField>
<gx:SimpleArrayField name="cadence" type="int">
<displayName><![CDATA[Cadence (rpm)]]></displayName>
</gx:SimpleArrayField>
<gx:SimpleArrayField name="heart_rate" type="int">
<displayName><![CDATA[Heart rate (bpm)]]></displayName>
</gx:SimpleArrayField>
</Schema>
<Placemark>
<name><![CDATA[91-95 Mackellar St (Start)]]></name>
<description><![CDATA[]]></description>
<TimeStamp><when>2015-06-16T00:13:20.617Z</when></TimeStamp>
<styleUrl>#start</styleUrl>
<Point>
<coordinates>150.678279,-33.743883,42.0</coordinates>
</Point>
</Placemark>
<Placemark id="tour">
<name><![CDATA[91-95 Mackellar St]]></name>
<description><![CDATA[]]></description>
<styleUrl>#track</styleUrl>
<ExtendedData>
<Data name="type"><value><![CDATA[driving]]></value></Data>
</ExtendedData>
<gx:MultiTrack>
<altitudeMode>absolute</altitudeMode>
<gx:interpolate>1</gx:interpolate>
<gx:Track>
<when>2015-06-16T00:13:20.617Z</when>
<gx:coord>150.678279 -33.743883 42.0</gx:coord>
<when>2015-06-16T00:13:27.722Z</when>
<gx:coord>150.678229 -33.743867 42.0</gx:coord>
<when>2015-06-16T00:13:28.756Z</when>
<gx:coord>150.67806 -33.743799 65.0</gx:coord>
<when>2015-06-16T00:13:39.512Z</when>
<gx:coord>150.677959 -33.743817 59.0</gx:coord>
<when>2015-06-16T00:13:40.512Z</when>
<gx:coord>150.677948 -33.743824 59.0</gx:coord>
</gx:Track>
</gx:MultiTrack>
</Placemark>
</Document>
</kml>