Access: Whites Crossing picnic area and The Groynes are good starting points but there are multiple ways to access the track.

Distance: 21 km

Toilets: Three locations throughout the Groynes and Whites Crossing picnic area.

Dogs: Dogs are prohibited from the Groynes except for on the Ōtukaikino Track where they are allowed to pass through on a leash. Dogs are also prohibited from Isaac Conservation Tracks. Dogs are allowed under effective control on Templars Island Trail and the Dickeys to Waimakariri Trail.

Shared: The Isaac Farm Track is walking only but the rest of the track allows bikes. Cyclists should control their speed and give way to pedestrians.

The O21K utilises a network of tracks, managed by different organisations, to create one epic adventure through North Canterbury. Made up of sections of Templars Island Trail,(external link) the Ōtukaikino Track and Isaac Farm Track(external link), the O21K offers new experiences for urban adventurers.

Complete the full circuit, walk a shorter section of your choosing, or challenge yourself to further explore either east along the Te Rauakaaka(external link) towards Brooklands Lagoon and Spencer Park, or west to McLeans Forest(external link).

You'll encounter everything from dense native plantings and riverside scenery to farmland on your journey.