Puerto El Bartolo is a Category 1 climb in Castellón — 10.88km at 6.5% average gradient, cresting at 713m. It's the last major climb of Stage 6 of La Vuelta a España 2026 (Alcossebre → Castelló, 176km), cresting 19.1km from the finish — often the launchpad for the day's decisive move. Set your groupset — Shimano, SRAM, Campagnolo or a custom setup — and see exactly which gears get you up it, kilometre by kilometre.
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