Transvulcania
Transvulcania is a long distance race, considered the hardest mountain-ultramarathon in the Canary Islands and one of the most important in Spain. The total route has a length of 73.3 km (45.5 mi) with a cumulative elevation gain of 4,415 m (14,485 ft) and elevation loss of 4,110 m (13,480 ft). The race takes place on the island of La Palma since 2009 and with the participation of many international runners.
Over time additional races have been added to the original Transvulcania utramarathon proper, currently:
Course records with green background.
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Wikipedia