The primary route is the 12km loop. If you are dropped, the 9km is a shortcut but do take note that at the junction between Sixth Avenue and Bukit Timah Road, please join the pedestrian sidewalk to avoid going onto Dunearn Road to make a challenging U-turn.
Click this link for the 9km course information on Garmin Connect
Click this link for the 12km course information on Garmin Connect
For .gpx file download