Barcelona is the obvious add-on for anyone treating the Valencia Marathon as the anchor of a wider Spain trip, direct by high-speed rail and busy with December's own version of city energy.
Getting There
Direct trains run from Valencia's Joaquín Sorolla station to Barcelona Sants, with the fastest services covering the route in under three hours and standard services taking closer to four. Trains run frequently through the day, making a post-marathon departure straightforward.
The City in December
December in Barcelona means Christmas markets, most notably Fira de Santa Llúcia beside the Cathedral, running through most of the month with stalls selling nativity figures, crafts and roasted chestnuts. The city carries more crowds and higher prices than Valencia at the same time of year, a genuine trade-off against the wider Spain trip on offer.
What to See
The Gothic Quarter and the Cathedral anchor the old city within walking distance of Sants once legs have loosened. Sagrada Família and Park Güell sit further out and are worth timed-entry tickets booked ahead rather than a walk-up visit during December's tourist volume. La Rambla and the Boqueria market suit an easier, food-focused day for anyone not ready for a full sightseeing itinerary two days after a marathon.
Where to Stay and Eat
The Eixample and Gothic Quarter both put a two-night stay within reach of the main sights on foot or by metro. Barcelona's tapas culture works well for recovery eating: small plates ordered in stages rather than one large meal, spread across an evening rather than compressed into a single sitting.
Getting Back
Return trains to Valencia run on the same high-speed line, or onward connections from Barcelona Sants continue north and east for travellers not returning south. Barcelona El Prat airport offers wider international connections than Valencia for the final leg home.