assistant: For a sub-3 marathon, you want a race shoe that balances responsiveness with enough cushioning to hold pace over 26.2 miles without your legs dying in the final miles. That's a narrow window — aggressive enough to feel fast, forgiving enough to survive the distance. My top pick is the **Saucony Endorphin Elite v2**. It's rated 9.0/10 by experts and sits at the sweet spot: full-length carbon plate for propulsion, high cushioning (PEBA midsole) to absorb impact at marathon pace, and a proven track record for runners chasing time standards. At $290, it's premium, but it's built for exactly this goal. Close second is the **Puma Deviate Nitro Elite v4** (also 9.0/10, $250). Slightly lighter than the Saucony, with a softer PEBA foam and excellent energy return. The 8mm drop is more aggressive than the Endorphin Elite, which some runners prefer for pushing hard; others find it tiring over 26 miles. It's the better value play if budget matters. The **New Balance SC Elite v5** (8.2/10, $240) is a solid third option — lighter and nimbler than the Saucony, with a forgiving fit. Kofuzi notes it's "comfortable enough for a full marathon while still race-ready," which is exactly what you need. The trade-off: slightly less aggressive than the top two, so it won't give you quite the same propulsive edge. <details> <summary><strong>Why the Saucony Endorphin Elite v2</strong></summary> The Endorphin Elite v2 is purpose-built for marathon racing. It combines a full-length carbon plate (which rewards fast, efficient footstrikes) with high cushioning to protect your feet and legs when fatigue sets in around mile 18–20. The 9.0 expert rating reflects consistent praise from serious marathoners. It's the shoe that most directly addresses your sub-3 goal — not the lightest, not the most aggressive, but the most balanced for holding a 6:52/mile pace for 2 hours 50+ minutes. </details> One clarifying question: **Have you run a marathon before, and if so, what shoe did you race in?** If you've already found a shoe that works for your feet, staying in the same brand/model family often matters more than chasing the highest rating. Also, **what's your current weekly mileage and recent long-run distance?** That'll help me flag if any of these shoes might be too aggressive for your current fitness level.

assistant: Good — you've got the fitness and experience to know what you need. The Metaspeed Sky+ punishing you on form breakdown is telling: that shoe is notoriously unforgiving when fatigue sets in, which is exactly why I'd steer you *away* from the most aggressive, plate-forward racers for a sub-3 marathon attempt. Your current fitness (50–60 km/week, 20–30 km long runs) is solid for a sub-3 push, and the fact that you're already running the **Adidas Adizero Evo SL** is interesting — it's a speed-trainer / daily-trainer hybrid with a nylon plate, not a full race shoe. That tells me you prefer a shoe that's responsive without being punishing. For sub-3, I'd recommend **Saucony Endorphin Elite v2** as your race-day choice. It's a 9.0/10 and sits at the sweet spot you need: full-length carbon plate for propulsion, high cushioning to absorb impact when your legs fatigue in miles 18–22, and a forgiving ride that rewards good form without *punishing* degradation the way the Sky+ did. The 8.0mm drop and aggressive rocker will feel familiar if you've been running the Evo SL, and the wide forefoot fit should accommodate your foot comfortably over 26 miles. The **Mizuno Hyperwarp Elite** (8.3/10) is a close alternative if you want something lighter and snappier — 170g vs. the Endorphin's heavier build, and only 3.5mm drop for a more forefoot-biased feel. But given your Sky+ experience, I'd caution: it's more aggressive and less forgiving on form breakdown. Save it for a 5K or half-marathon where you're fresher. The **Puma Deviate Nitro Elite v4** (9.0/10, $250) ties the Endorphin Elite on rating and is $40 cheaper. It's softer in the midsole foam and slightly lighter, which some marathoners prefer. The trade-off: 8mm drop like the Endorphin, but the overall ride is less "stable" under fatigue — The Run Testers note it can feel loose on heel strikes when you're tired. Given your Sky+ lesson, I'd lean Endorphin. <details> <summary><strong>Why the Saucony Endorphin Elite v2 for your sub-3 goal</strong></summary> You're coming off a 3:40 marathon in a shoe that punished form degradation. The Endorphin Elite v2 is the opposite: it's engineered to *forgive* fatigue. The dual-layer PEBA midsole (PWRRUN HG + PWRRUN PB) gives you propulsion early and cushioning late. The full-length carbon plate is aggressive enough to reward your improved fitness, but the rocker geometry and high stack (39/31mm) mean the shoe does some of the work for you when your quads are screaming at mile 20. Expert reviews consistently praise it for marathon-distance comfort without sacrificing race-day speed — exactly what you need for a 2:59:59 finish. At $290, it's the most expensive option here, but it's the most direct path to your goal. </details> One follow-up: **What's your target pace, and how confident are you holding 6:52/mile for the full distance?** If you're on the edge of fitness, the Endorphin Elite's forgiving nature becomes even more valuable. If you're confident you'll run 6:45 or faster, the Mizuno or Puma might give you a bit more edge — but I'd still lean Endorphin for the margin of safety.

assistant: I don't have data on the Adios in my current catalog, so I can't give you a direct verdict on it. That said — what drew you to the Adios specifically? Is it brand loyalty to Adidas, or did you hear something about the ride or fit that appeals to you? Here's the thing: you're already running the **Evo SL**, which is an 8.7/10 speed trainer with a nylon plate. It's excellent for what it is — responsive, nimble, familiar to your feet. But for a sub-3 marathon attempt, you need a *race shoe*, not a speed trainer. The Evo SL is built for uptempo work and shorter distances, not 26.2 miles at race pace. If you want to stay in the Adidas ecosystem for your marathon, the **Adizero Adios Pro Evo** (if that's what you meant) would be the logical choice — it's their marathon racer. But I don't have detailed specs or reviews on it in my data right now. Given what I *do* have, and given your fitness level + your sub-3 goal + your experience with the Sky+ punishing form breakdown, I still lean **Saucony Endorphin Elite v2** (9.0/10). It's the most forgiving full-length carbon plate racer available, and that margin of safety matters when you're chasing a time standard over 26 miles. **That said:** if you're more comfortable in Adidas shoes and the Adios Pro Evo has a fit or ride you prefer, that familiarity can be worth something. Have you raced in Adidas before, or is the Evo SL your first Adidas racing experience?

assistant: You're right — I do have the **Adidas Adizero Adios Pro v4** in my data. My apologies for the confusion. Here's the honest assessment: the Adios Pro v4 rates 6.2/10 from experts, which is a significant step down from the Endorphin Elite v2 (9.0/10) and even the Puma Deviate Nitro Elite v4 (9.0/10). For a sub-3 marathon attempt where you're already on the edge of fitness, that rating gap matters. I don't have detailed reviewer breakdowns on the Adios Pro v4 in my current data, so I can't tell you specifically where it falls short — but a 6.2 rating suggests it's not optimized for marathon racing the way the top-tier shoes are. It might be excellent for 5K or 10K, or it might have fit/durability issues that drag the rating down. **Here's my recommendation:** You have three genuinely strong options in my data: 1. **Saucony Endorphin Elite v2** (9.0/10, $290) — still my top pick for your sub-3 goal. Forgiving, cushioned, proven for marathoners. 2. **Puma Deviate Nitro Elite v4** (9.0/10, $250) — ties the Endorphin on rating, $40 cheaper, slightly softer ride. The Run Testers note it can feel loose on heel strikes when fatigued, which given your Sky+ experience, is a caution. 3. **New Balance SC Elite v5** (8.2/10, $240) — lighter and nimbler than the Endorphin, wide forefoot fit, forgiving for marathon distance. Kofuzi says it's "comfortable enough for a full marathon while still race-ready," but notes it's "not quite aggressive enough for the top tier of marathon racers." **If you want to stay Adidas:** the Adios Pro v4 at 6.2/10 is a step down from these three. Brand loyalty is real, but for a sub-3 marathon on the edge of fitness, I'd rather see you in a 9.0-rated shoe than a 6.2-rated one, even if it means switching brands for race day. What's holding you to Adidas — is it fit comfort, or are you hoping the Adios Pro v4 is underrated in the reviews?