Along with the old Coach Road track which was pretty chilled out, mainly 19km of down hill with a few small climbs, I did the 42nd Traverse which was easily the most intense mountain bike ride i've done (i'm not a mountain biker). 42kms through the mountain side, which normally would be fine, but it had rained the night before and the track is shared with 4x4s. They completely tore it up which made it incredibly muddy (to the point you had to try to walk without stacking it). Needless to say it was unsurprising a 4x4 got completely stuck and didn't look like it was moving any time soon, despite the efforts of 5 random guys trying to dig it out.
Anyway, awesome ride, through incredible scenery and a few river crossings Got up to 35km/h on the way day.