tool to create a network graph from different traceroutes
Create a number of traceroute files
traceroute -n -q 10 google.com > traces/google.com
You may do the traces from several machines on different locations to get more routes into the system.
Then use graph.php and graphviz to render the network graph.
php graph.php | dot -Tpng -o network.png
You may also try different graph algorithms:
php graph.php | neato -Tpng -o network.png
php graph.php | sfdp -Tpng -o network.png
Example created with sfdp and traceroute to google.com:
