I did the race last year with some challenges broke my derailer in half so single speed fun for a good 100km.
make sure you have spares for your bike I would recommend the following.
hanger, quick links x2, tube, tyre plugs, multi tool, co2, and possibly a small pump if you have one the water points are very spread out so you need to be able to sustain yourself for a good bit.
There is a mechanical station at the halfway mark.
also eat alot and drink alot it is a long dag in the saddle.
Do at least one ride that is 120km to dial in your setup and make sure you are comfortable.
there is quite a fare bit of Tar sections so train riding high speeds on tar will improve your finish time significantly.
