diff --git a/src/FileIO/FixElevation.cpp b/src/FileIO/FixElevation.cpp
index 39228ec75..efd16d8e9 100644
--- a/src/FileIO/FixElevation.cpp
+++ b/src/FileIO/FixElevation.cpp
@@ -147,9 +147,10 @@ FixElevation::postProcess(RideFile *ride, DataProcessorConfig *config=0, QString
             if (latLngCollection.length() != 0) {
                 latLngCollection.append(',');
             }
-            latLngCollection.append(QString::number(point->lat));
+            // these values need extended precision or place marker jumps around.
+            latLngCollection.append(QString::number(point->lat,'g',10));
             latLngCollection.append(',');
-            latLngCollection.append(QString::number(point->lon));
+            latLngCollection.append(QString::number(point->lon,'g',10));
             if (pointCount == 400) {
                 elevationPoints = elevationPoints + FetchElevationDataFromMapQuest(latLngCollection);
                 latLngCollection = "";
diff --git a/src/Train/LiveMapWebPageWindow.cpp b/src/Train/LiveMapWebPageWindow.cpp
index 4995923af..4b94248ae 100644
--- a/src/Train/LiveMapWebPageWindow.cpp
+++ b/src/Train/LiveMapWebPageWindow.cpp
@@ -139,8 +139,9 @@ void LiveMapWebPageWindow::ergFileSelected(ErgFile* f)
     if (f && f->filename != "" )
     {
         setIsBlank(false);
-        QString startingLat = QString::number(((f->Points)[0]).lat);
-        QString startingLon = QString::number(((f->Points)[0]).lon);
+        // these values need extended precision or place marker jumps around.
+        QString startingLat = QString::number(((f->Points)[0]).lat, 'g', 10);
+        QString startingLon = QString::number(((f->Points)[0]).lon, 'g', 10);
         if (startingLat == "0" && startingLon == "0")
         {
             markerIsVisible = false;
diff --git a/src/Train/MeterWidget.cpp b/src/Train/MeterWidget.cpp
index 33448c877..22637870d 100644
--- a/src/Train/MeterWidget.cpp
+++ b/src/Train/MeterWidget.cpp
@@ -622,8 +622,9 @@ void LiveMapWidget::initLiveMap(Context* context)
 void LiveMapWidget::plotNewLatLng(double dLat, double dLon)
 {
     QString code = "";
-    QString sLat = QString::number(dLat);
-    QString sLon = QString::number(dLon);
+    // these values need extended precision or place marker jumps around.
+    QString sLat = QString::number(dLat, 'g', 10);
+    QString sLon = QString::number(dLon, 'g', 10);
     QString sMapZoom = QString::number(m_Zoom);
 
     if (!routeInitialized)