Volcanic hazards are typically evaluated using proximal deposits that demonstrate past eruptive behaviour. Localised deposits can provide incomplete volcanic histories, however, and hazards can extend across intercontinental scales in the form of ash-clouds, climate disturbances and environmental impacts. Cryptotephras in distal sedimentary records can greatly complement proximal records, capturing eruptions or phases of eruptions that may be poorly preserved near the volcano. Their presence in continuous sedimentary records also enables precise dating which can be transferred to proximal deposits, as well as reconstructions of climate and environmental responses to an eruption or its fallout. Cryptotephras also highlight the spatial extent of past ash clouds, which has relevance for understanding ash cloud dispersal processes and risks. We invite presentations that showcase contributions of cryptotephra studies to the understanding of past and future volcanic hazards and impacts.