assistant: For a sub-19 5K, you're in the elite speed tier—a carbon-plated racer is the right call. At your body weight and pace, you'll get genuine energy-return benefit from the plate and the stiffer, lighter platform without sacrificing responsiveness. Before I lock in a top pick, one quick question: **Do you prefer a firmer, more responsive ride that rewards high cadence, or a softer, more cushioned feel that emphasizes comfort over long efforts?** That'll separate the Deviate Nitro Elite v4 (snappy, firm, cadence-driven) from the Metaspeed Edge Tokyo (maximal cushion, stability-tuned). Both are excellent 5K/10K shoes; the ride character is the key delta.

assistant: For a sub-19 5K at 60 kg, the **Puma Deviate Nitro Elite v4** is the faster pick—it's lighter (170g vs 215g), firmer, and rewards the high cadence that elite 5K runners naturally bring. The Endorphin Pro v5 is a solid marathon shoe, but it's built for stability and durability over raw speed. **The key deltas:** - **Weight & responsiveness**: The Deviate is 45g lighter and sits on a higher, more responsive plate geometry. EDDBUD calls it "one of the lightest Puma racers ever" and notes it "wants you to pick up the cadence"—exactly what a sub-19 5K runner needs. The Endorphin Pro v5 is heavier and tuned for marathon pacing, not 5K aggression. - **Ride character**: Deviate is firm and snappy; Endorphin Pro v5 is smooth and consistent. For 5K, you want the snap. Doctors of Running describes the Deviate as "firm, but it's very snappy," while Kofuzi notes the Endorphin Pro v5 is "a little bit on the soft side" and "less aggressive than I'd like." - **Plate placement**: The Deviate's carbon plate sits higher in the forefoot, closer to the heel—more aggressive energy return. The Endorphin Pro v5's slotted plate is gentler, designed to absorb impact over marathon distance, not maximize turnover. - **Use case**: The Endorphin Pro v5 shines at marathon (FORDY RUNS calls it "most stable carbon-plated marathon shoe"), but for 5K/10K racing, the Deviate's lighter, snappier platform is the better match for your pace and body weight. **Bottom line**: Stick with the Deviate Nitro Elite v4. It's built for runners like you—fast, cadence-driven, and racing short to mid distances. The Endorphin Pro v5 is a fine shoe, but it's overbuilt for a 5K effort.