assistant: You're in the sweet spot for a cushioned daily trainer that can handle your build-up miles and long runs without needing a race-day shoe yet. At 85 kg and 4:30 target, you've got time to build aerobic base in something durable and protective — save the racing flat for taper. A few quick clarifications before I lock in the picks: 1. **Pronation** — do you know if you're a neutral striker, overpronate, or supinate? (Your heel strike is clear; I'm asking about medial/lateral foot roll.) 2. **Cushioning preference** — after your 18-miler, did your legs feel good, or are you craving more underfoot protection? Once I know those, I'll point you toward the right trainer for your build-up.

assistant: Perfect — you're thinking smart. For a 4:30 first marathon on 25 mi/wk now, a durable daily trainer that handles both easy miles and your long-run progression is exactly what you need. You'll get more out of a shoe built for 400+ miles of training than a race flat. Since you're a heel striker and didn't mention pronation concerns, I'm reading you as neutral or close to it. Here are three solid options for your build-up: **ASICS GT-2000 v13** — Best for your workouts Mild stability (guide rails, not a clunky post) with a snappier, firmer ride than earlier versions. Doctors of Running calls it "Old Reliable" — versatile enough for daily miles *and* tempo work, which matters as your training intensifies. 230g, 8.0mm drop, 36/28mm stack. The trade-off: narrow forefoot, so try it on first. **Saucony Endorphin Azura v1** — Best all-rounder Neutral, high-cushion (41/33mm stack), bouncy PEBA midsole, and a rocker that feels effortless on long runs. The Run Testers notes it's "firmer, bouncier, more rockered" — great for the 18-miler progression you're building. Standard width, 244g. Slightly pricier but worth it if cushioning felt good after your recent long run. **Saucony Ride v19** — Budget-friendly workhorse High cushion, traditional daily trainer, $140. EDDBUD praises it as "dependable" with a wider heel and solid outsole. Less exciting than the Azura, but it'll get you through 400+ miles without drama. Good if you're rotating shoes or want to keep cost down. **Quick follow-up:** After that 18-miler, did your feet or calves feel beat up, or were you fine? That'll tell me if you need the extra cushion of the Azura or if the GT-2000's snappier feel would suit you better for mixed-pace training.