Brooks Beast GTS 24 Sizing Guide: Does It Run Small or True to Size?

Fit Notes

Brooks Adrenaline GTS 24

The Adrenaline GTS 24 runs tighter and shorter than older versions, often forcing users to size up a half size to US 10.5 just to prevent big toe rubbing. By comparison, the Beast GTS 24 delivers a more consistent, true-to-length fit but features a slightly narrower toe box. If you previously sized up in the Adrenaline solely to gain extra toe clearance, you should return to your true length in the Beast GTS 24; however, if you require extra horizontal room, opt for a wide (2E) width rather than sizing up in length to avoid introducing excess length that leads to heel slippage.

ASICS Gel-Kayano 31

The Gel-Kayano 31 features a more generous, thinner upper that wraps the foot with less structural stiffness, alongside a softer cushioning system. Transitioning to the Beast GTS 24 provides a much firmer (30.1 HA) and more rigid ride. While both models share a similar true-to-length profile, the Beast's structured upper and tapered toe box feel tighter. Rather than compensating by purchasing a larger length size—which would misalign the foot from the GuideRails stability plane—users needing extra space should buy their true length size but select a wide width option.

HOKA Gaviota 5

The Gaviota 5 runs slightly large and features an exceptionally roomy, wide toe box environment. Runners accustomed to this spacious forefoot feel may initially find the Beast GTS 24 too restrictive and tapered at the toes. To replicate the Gaviota's forefoot volume without creating a loose fit in the heel, do not size up in length; instead, stay true to your length size and select the Wide (2E) or Extra-Wide (4E) options to gain the necessary forefoot width.

Saucony Hurricane 24

Both the Hurricane 24 and the Beast GTS 24 present a similarly snug, secure, and structured midfoot lockdown. However, the Hurricane 24 utilizes a plush, energetic max-cushion platform with a low 6 mm drop, whereas the Beast GTS 24 delivers a firm, grounded, and highly guided 12 mm drop ride. Because they share equivalent true-to-size length characteristics, order your standard length size, and utilize Brooks' dedicated width options to accommodate any additional lateral splay needs.