Me and my nephew ran 13km distance. Tough downhills and uphills. 3kms was very barefoot unfriendly. Otherwise nice event.
You tube videos here:
https://www.youtube.com/playlist?list=PLL6Z_iqjvl-umJax_yQih2Gh50WSYFn2p
You tube videos here:
https://www.youtube.com/playlist?list=PLL6Z_iqjvl-umJax_yQih2Gh50WSYFn2p