assistant: You're building a solid base for a first marathon. At 4:30 pace, you're in the sweet spot where a cushioned daily trainer will carry you through the build-up better than a racing flat — you want protection and durability for 300+ miles of training, not race-day foam life. As a heel striker at 85 kg, you'll benefit from shoes with solid rearfoot cushioning and a rocker to ease the load through your calf and Achilles. Here are three strong options for your training block: **Brooks Glycerin GTS v22** — Best for stability + cushion. The firmer DNA Tuned midsole and medial post deliver real support without being clunky, and Doctors of Running notes it's bouncier than it feels, which helps on long runs. The 10 mm drop suits heel strikers well. Wide forefoot if you need it. **ASICS Gel-Nimbus v28** — Max cushion + recovery focus. At 42/34 mm stack with a moderate rocker, this is the most protective option here — ideal for the long-run phase. It's neutral, so no medial post, but the high cushioning and rocker geometry take pressure off your heel strike. Lighter than you'd expect for a max-cushion shoe. **Saucony Guide v18** — Budget-friendly daily trainer. Mild stability with a 6 mm drop (lower than the Glycerin, closer to neutral geometry). Doctors of Running calls it "fine for easy runs" and good value on sale. At $140, it's the cheapest entry if you want rotation variety without breaking the bank. One clarifying question: **Do you have any history of calf, Achilles, or heel pain?** That would tip the needle toward the Glycerin GTS (more drop, more rearfoot support) or confirm the Nimbus as your workhorse.

assistant: Perfect — you're thinking like a smart first-marathoner. Daily trainers are built for the 300+ miles you'll log in training; race shoes are optimized for 150–200 miles at race pace and will wear out faster on easy runs. Given your heel strike, 85 kg weight, and long-run focus, here are three solid daily trainers for your build-up: **Brooks Glycerin GTS v22** — Best for your profile. The 10 mm drop and high cushioning suit heel strikers, and the mild stability (firmer DNA Tuned midsole + medial post) provides real support without being clunky. Doctors of Running notes it's noticeably more stable than the standard Glycerin, which matters when you're fatigued on mile 16 of a 20-miler. Wide forefoot if you need room. **ASICS Gel-Nimbus v28** — Max cushion + recovery focus. At 42/34 mm stack, this is the most protective option here — ideal for absorbing impact on long runs. Neutral (no stability post), but the high cushioning and geometry take pressure off your heel strike. Believe in the Run confirms it's lighter than the previous version, so it won't feel sluggish on tempo work. **Saucony Guide v18** — Budget-friendly daily trainer. Mild stability with a 6 mm drop (lower than the Glycerin, closer to neutral). Doctors of Running calls it solid for easy runs and good value on sale at $140 — smart if you want rotation variety without breaking the bank. The Glycerin GTS v22 is my top pick for your marathon build because the 10 mm drop and stability rails will feel most natural to your heel-strike pattern, especially as fatigue sets in on long runs. The Nimbus is your backup if you want maximum cushioning for recovery weeks or if your heel/Achilles ever gets tender. **Any history of calf, Achilles, or heel pain?** That would confirm the Glycerin GTS as your workhorse or suggest leaning harder into the Nimbus.