The map isn't very precise but I've found out that the distance between Ballanard Road and Tromode Road is close to 0.35 miles or 560 metres measured with an on board computer. The difference in elevation is about 108 feet or 33 metres. As this site doesn't allow bigger images than 640x480 pixels it's hard to read but here is a screen dump of the map as close as it's possible to get. Note the blue line finishes after the Tromode Road crossing (where the uphill has started) which means that the elevation is about a couple of feet more, maybe 110 feet or 33,5 metres.