That included many of the international visitors who comprised about 20 per cent of surveyed riders, prompting the Ministry of Economic Development to consider bringing it under the NZ Cycle Trail's global marketing umbrella.
National programme manager John Dunn said that would put the full marketing might of Tourism New Zealand behind the Otago venture as a key ingredient in the country's international visitor offering.
He said the NZ Cycle Trail, on which three rides have been completed and sections of 12 others are open, was already creating international interest and the Otago trail could only keep growing in popularity under the wider brand.
One spectacular South Island ride, the Old Ghost Road from Buller Gorge to the coast north of Westport, has already been ranked by Britain's Essential Travel magazine at third place in a top 10 list of cycle rides of the world.
That is with only 18km of its 80km route open for advanced-grade mountain bikers.
The Otago trail is to be extended by two easy-grade rides under grants totalling $4.54 million from the Cycle Trail fund, running 84km southeast of Alexandra through the otherwise inaccessible Roxburgh Gorge and the old Clutha gold fields.
One of the Otago trail's main instigators, Robin Thomas of the Department of Conservation in Dunedin, believes benefits will flow both ways from its incorporation into the national brand.
Although the trail would gain from the extra marketing clout, he expected linking it to the wider mission would lend more credibility to the new ventures.
He has been involved in a mentoring capacity with Northland's Twin Coast Cycle Trail, appearing at public meetings to assure doubters about benefits likely to come their way and dispelling fears of vandalism which he said had proved unfounded in Otago.