If swains is part of the route I am definitely out. I couldn't even make it up Highgate hill without walking up the steepest bit the other week. H8 u hovis.
http://maps.google.co.uk/maps?q=highgate+hill&hl=en&ll=51.570121,-0.144753&spn=0.009456,0.022724&sll=51.566667,-0.146599&sspn=0.038094,0.090895&vpsrc=0&gl=uk&t=h&z=16&layer=c&cbll=51.570079,-0.144607&panoid=sxA4LwG6ElIIbVVUBpEzDA&cbp=12,195.64,,0,14.58
@Kidneys started
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http://maps.google.co.uk/maps?q=highgate+hill&hl=en&ll=51.570121,-0.144753&spn=0.009456,0.022724&sll=51.566667,-0.146599&sspn=0.038094,0.090895&vpsrc=0&gl=uk&t=h&z=16&layer=c&cbll=51.570079,-0.144607&panoid=sxA4LwG6ElIIbVVUBpEzDA&cbp=12,195.64,,0,14.58