They negotiated "snakes and ladders", climbed a hill called "Mt Everest" and hurtled though tyres and over padding.
The Kids XC Series event at Rotary Park attracted about 60 entries and was run by the Ariki Athletics Club.
Further events would be held on August 9 and 29, in conjunction with the Otago and then New Zealand cross-country championships in Dunedin.
Mr Crewe said the entry fee was a can of food. The collection would be donated to Presbyterian Support Otago’s Octacan food bank programme.