The Callington Spur Trail is part of SA's Lavender Federation trail and was officially opened in September this year.
The trail is a joint project of South Australian Recreation Trails Inc. (SARTI) and the Rural City of Murray Bridge. It's a linear walking and mountain bike trail of 27km.
SARTI's Graham Hallandal said it was "a pretty rare thing" to find a trail that had been designed for both walkers and riders from the start.
But the involvement of each group had benefited the other, he said, and both had helped the council spend its money efficiently.
"The cost of getting professional trail builders in would have been horrendous, so we (SARTI) were asked if we wanted to get involved," he said.
"It was something we had expertise in, we had the volunteers, and our board decided yes, we'd back it and away we've gone."
Volunteers completed the last two kilometres of the Callington Spur Trail, between the truck drivers' memorial on Adelaide Road and White Hill, or Tower Hill, just before the officla opening of the track.
From Murray Bridge, the trail climbs up past the freeway interchange, climbs north through Kinchina Conservation Park, then takes a similar route to the old highway past Monarto Safari Park, through Kanmantoo and over Callington Hill to its destination.
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