From Yangshuo West Street to Yulong Bridge

Travelchinaguide website reads:

`Rent a bicycle at the West Street in Yangshuo and ride along the river bank upstream to YL Bridge. It takes about 20-30 minutes.'

From my reading of other websites and articles, it cannot be so short a distance of only 20 to 30 mins. I think this is misleading. Please advise.