Kakahi Falls is roughly a 20-minutes' drive away from Rotorua. The road surface is always sealed.

From Rotorua travel north on SH-30 for 16 kilometers until you see a sign 'Hell's Gate'. The parking is on your left.

The waterfall is located on a private land which belongs to geothermal reserve Hell's Gate. Hence, you need to buy a ticket to walk to the waterfall. You have different options: either buy a bush walk ticket or buy a package which includes the walk, geothermal bath, and spa. The price varies from 35 to 90 NZD. 

An easy walk leads you to the waterfall's lookout. The whole bush-walk takes roughly 45 minutes, but you will reach the waterfall within first 10 minutes. Hell's Gate Geothermal Reserve is set in 50 acres with a large variety of geothermal features. Walk past steaming fumaroles and pools of boiling MUD so violent they are unnerving.