On uses their Helion superfoam to cushion the Cloudrunner 2, a midsole foam that combines rigid and flexible elements into the same compound. This foam is molded into individual pods underfoot, called CloudTec cushioning. The pods compress as you land and open as you take off, helping you spring back up into your next stride.
“Each run in the Cloudrunner 2 reminded me of cross country skiing. I felt as if I were gliding over the roads with ease. I loved how lightweight this shoe felt, whether I was running or doing my dreaded burpees during a HIIT video workout,” says Mandy, who’s known for putting her wear test pairs through multiple types of activities.
Some of us found the Cloudrunner 2 a bit too firm for our tastes.
“The On Cloudrunner feels firm on foot,” says Brandon. “Walking in the shoes feels just fine, but I ran 20 miles in them and the Helion Superfoam didn’t offer the energy return I’ve come to expect from On.”
The firmness of the Cloudrunner may be enjoyed more by runners with flexible feet, as stability models tend to feel more structured underfoot than neutral shoes to provide support.
The Cloudrunner 2 uses a TPU heel clip that extends around the medial and lateral sides of the shoe to offer stability. However, our resident stability shoe guru, Spencer, didn’t think the Cloudrunner 2 offered the level of support he needed.