assistant: You're in the sweet spot for a carbon-plated racer — sub-19 5K pace is exactly where super-shoes shine. At 60 kg, you'll get the most out of a full-length carbon plate without the weight penalty that can slow heavier runners. For 5K/10K specifically, you want a racer that's **responsive and snappy** over the 25–45 minute window, not a marathon-cushioned shoe. That rules out the Metaspeed Sky Tokyo and Hyperwarp Elite — both are marathon-focused with softer, compression-driven rides. Your best match is the **Puma Deviate Nitro Elite v4**. EDDBUD calls it "one of the lightest Puma racers ever" and notes it "wants you to pick up the cadence" — that's exactly the vibe for a 5K. At 170g, it's the lightest shoe in this set, and reviewers praise its firm, snappy platform that rewards high cadence and harder foot-strikes. Doctors of Running (Andrea) loved the responsiveness: "firm, but it's very snappy" and it "responded really well to faster paces." The 38/30mm stack is aggressive but not extreme, and the carbon PWRPLATE sits high in the forefoot for that direct ground feel. The **New Balance SC Elite v5** is your backup — also excellent for 5K/10K, slightly heavier (201g) but with a full-length carbon plate and that same snappy character. Fair warning: it runs narrow in the heel, so if you have a narrow foot, it's a plus; if you're standard or wide, the Deviate will feel more comfortable. Skip the Fast-R Nitro Elite v3 for 5K — it's heavier (implied from the "bouncy forefoot" description) and Kofuzi pegs it as a half-marathon shoe, which is a longer race window than you need. Are you planning to train in this shoe as well, or keep it race-day only?

assistant: **Puma Deviate Nitro Elite v4 is the faster 5K/10K choice; Saucony Endorphin Pro v5 is the marathon-focused option.** The core difference: the Deviate is built for *speed*, the Pro v5 for *endurance and stability*. **Ride deltas:** The Deviate sits lower (38/30mm stack vs 39/31mm) and feels snappier — EDDBUB calls it "one of the lightest Puma racers ever" and notes the plate "sits a bit higher in the forefoot foam," rewarding hard foot-strikes and high cadence. Doctors of Running describes it as "firm, but it's very snappy" and praises how it "responded really well to faster paces." The Pro v5 is heavier (215g vs 170g), softer, and more stable. EDDBUB says it's "the widest in the heel" with "a smooth, consistent ride" and "a wide landing platform in the heel that protrudes from the back of the shoe like a ski" — designed for runners whose form breaks down on longer efforts. Kofuzi notes it's "a little bit on the soft side" and "ideal for midfoot and heel strikers," which is the opposite of the Deviate's cadence-driven character. **For your 5K/10K goal:** the Deviate wins decisively. At sub-19 5K pace, you want that snappy, responsive platform and the lighter weight. The Pro v5 is a marathon shoe masquerading as a racer — it's capable but softer and heavier than you need for your distances. **The Pro v5's strength is stability and durability on the marathon course.** If you ever shift to the marathon, it's a solid choice. For now, stick with the Deviate. One note: the Pro v5 has "mixed reception" (Kofuzi suggests hunting discounted Pro 4s instead), whereas the Deviate has "excellent" reception. That's a meaningful signal for a race-day shoe.