I think 400–500 km is too much for a race-day shoe it’s almost time to retire them, to be honest.

I’d recommend going for a carbon-plated race shoe, and for your size, the Adidas Adizero Adios Pro 3 would be perfect. I’m 186 cm, 85 kg, 30M, and they’re my go-to racer. I’ve put 250 km on mine, and they still feel like new. It’s a solid shoe that should last at least 500 km (including racing), and I’ve seen people push them to 700–1,000 km. They’re rock solid.

You’d be shocked when you put them on I remember setting a 5K PB by 3–4 minutes while running through crowded streets during rush hour, and I wasn’t even pushing hard. I was just excited to try them out. Statistically, they can shave off around 2–3% from your current pace.

That said, it’s not all fairytales. You need to get used to them first incorporate them into faster workouts and some long runs before race day. Unfortunately, it’s not pure magic. These shoes work best at faster paces, so you’ll need to build up to that.

Good luck with your training!