assistant: You're in the sweet spot for a cushioned daily trainer that can handle both your easy miles and the occasional tempo or long-run effort — no need for a racing flat yet. At 85 kg and a 4:30 target, you want protection and stability in the midsole without sacrificing responsiveness as your long runs stretch out. For your marathon build-up, I'd lean toward shoes that reward steady effort and give you confidence on back-to-back hard days. A couple of quick clarifications would help me narrow it down: 1. **Do you have any history of overpronation, shin splints, or knee pain?** (This matters for whether a mild-stability shoe like the Kayano 32 makes sense, or if a neutral cushioned trainer is the better fit.) 2. **How do your current shoes feel on easy days vs. tempo work?** Are you looking for something firmer and snappier, or softer and more forgiving? Once I know that, I can point you toward the best option from what I have.

assistant: Perfect — you're thinking like a smart marathoner. At 85 kg, heel-striking, and targeting 4:30, you want a shoe that rewards steady effort and handles the volume without breaking down. I'm steering you toward cushioned daily trainers that work for both easy miles and the occasional tempo push. Here are my top three for your build-up: **Saucony Endorphin Azura v1** — Best for marathon build-up. Firm PWRRUN PB foam with a pronounced rocker that bounces under load but stays stable on easy days. The Run Testers call it "light, poppy, and propulsive" with "better at the slower miles" — exactly what you need for 18–20 milers. True-to-size fit, $150, and versatile enough to handle tempo work without a plate. **ASICS Gel-Kayano 32** — Stability option if you want extra support. Mild-stability guide rails, 500+ mi durability, and high cushioning (40/32mm stack) make it a workhorse for high-volume training. Run Moore notes it's "evolved into a genuinely runnable daily trainer with strong durability." Fair warning: runs narrow in the forefoot. $165. **New Balance 1080 v15** — Max-cushion alternative. Lighter and bouncier than v14, designed for higher-volume feet wanting responsive protection. Doctors of Running confirms it's "lighter, bouncier, and more run-focused" — good if you want the softest landing on back-to-back long runs. $170. **Follow-up:** Between these three, does your current shoe lean more toward firm-and-snappy or soft-and-plush? That'll help me confirm which one fits your stride best.