For us, the realm of maximalist running shoes begins at 40 mm in the heel, and the Novablast 5 joins this select group despite being a lightweight daily trainer. In fact, we think that the Novablast series may have been the catalyst for the growing trend of using ultra-cushioned shoes for everyday runs.
ASICS claims the stack height matches its predecessor at 41.5 mm, but we discovered otherwise. Using our digital callipers, we measured 40.9 mm in the heel—the tallest Novablast yet. Version 3 measured 37.2 mm and version 4 reached 39.2 mm here in the lab, with all measurements done following World Athletics guidelines.
Based on these results, we believe the Novablast 5 offers an unmatched cushioning-to-price ratio. On the flip side, runners seeking a more traditional ride with plenty of ground feel will need to explore other options with thinner midsoles like the Nike Pegasus 41.