GNR training ride

I'd like to ride Wiseman's GNR but not overly keen on doing it solo for safety reasons.
I'm looking to do about 60 - 80 km, or 4 - 6 hours. Minimal stops along the way apart from nutrition break at half way point.
Meet at the ferry, up Devine's Hill, out past Clare's bridge for x km or hours, and then return via Shepherds gully.

This is a training and familiarisation ride for the upcoming DirtWorks. I'd like to push myself quite hard and work on managing hydration/energy levels. Pace I'm aiming for is something like 60km in about 4 1/2 hrs.

Then followed by a cool drink and bite to eat at the pub afterwards

doc