The reward is a stunning view of the three mountains - Ruapehu, Ngauruhoe and Tongariro.
Raetihi is at 525m above sea level, while Pipiriki is 89m above.
"The 25km riders still have to navigate the infamous Waipuna hill, and a few more ups and downs, but they can enjoy the scenery knowing the mostly uphill return trip can be enjoyed in style on a bus," Mrs Conway said.
"The 50km riders are the hard core who ride all the way down to Pipiriki, and all the way back up. The road is sealed, but there are still challenges ... one-way bridges, one of which is wooden with bumpy planks, narrow sharp corners and the odd goat."
The start and finish area outside the museum has a market day atmosphere with stalls and barbecue and coffee vendors.
"Come and enjoy the historic Raetihi-Pipiriki road with us. One of the main reasons it's on Easter Sunday, is there are no logging trucks working that day. It's a community, volunteer-run event, but we have amazing spot prizes including Mt Ruapehu season passes, jet boat trips to the Bridge to Nowhere and many more.
"Tongariro water is donating spring water for our drink stations, so no one has to be paranoid about drinking diesel, which is what Raetihi has mainly been in the news for lately," Mrs Conway said.
"We give out certificates, and every rider gets a goody bag of fresh Ohakune vegetables when they register."