Third Space Marylebone is a central London gym offering two floors of training space with functional rigs, strength equipment, and WattBikes for performance cycling. The facility features group classes spanning cycle, combat, weightlifting, and metabolic conditioning, alongside yoga, Pilates and barre in a dedicated studio. Members can recover in a 16-metre pool, sauna and steam room. The gym suits those pursuing functional fitness and hybrid training across strength, cardio and mind-body disciplines.
For race-specific work, the gym has a sled track and rowing machines — the kit that matters most for practising sled push and pull efforts at competition standard. Members rate it 4.6 out of 5 across 679 Google reviews.