áSYDNEY RUNNING FESTIVAL
Distances range from a family-friendly 3.5k to a legwobbling 42.2k. Starting at Milsons Point, the courses offer scenic routes with each crossing the Harbour Bridge. àBradfield Park, Alfred St South, Milsons Point 2061. www.sydneyrunningfestival.com. au. 6am. $25-$195. Sun Sep 17.
The National Instruments Autonomous Robots Competition is a student robotics competition for teams from top universities across Australia, New Zealand and Singapore. àBuilding 1, Lvl 5, Great Hall, University of Technology Sydney, 15 Broadway, Ultimo 2007. australia.ni.com/ni-arc. 9am-5pm. Free. Tue Sep 5.
Speakers include martial artist and actor Maria Tran; mathematician Ivan Zelich; research scientist Nural Cokcetin; founder of tech company Afterpay, Nick Molnar; climate change activist Anika Molesworth; and beatmaker Alice Ivy. àSydney Town Hall, 483 George St, Sydney 2000. tedxsydney.com/event/ tedxyouthsydney-2017. 9.15am-5.30pm. $50-$90. Wed Sep 6.