Distance in kilometers: 210-220 km It takes about 7–8 hours to reach Sonprayag from Haridwar. The cost of a cab will be relative to a few factors, like the type of taxi that you choose and when you place a request. A cab to Sonprayag will cost you around Rs 4,500 to 6,500 on average from Haridwar. This is what can propel the price: https://srgholiday.com/haridwar-to-sonprayag-taxi-fare/