I've tested every modern Garmin watch — and I'd recommend these 8 deals to get race-ready over winter

(Image credit: Garmin, edited with Gemini)

It's October, and while the best of the year's weather is behind us, if you're a keen runner your thoughts might already be turning to next spring. April onwards is marathon season, and if you've entered the New York or Berlin events, London's mammoth two-day event, or one of the many other marathons held in cities around the world, you'll want to start getting race-ready over winter.

Alternatively, you might be getting fit for…