The crossing of the Island of Elba by MTB along very technical enduro trails (S3 / S4) made by Elba MTB: 106km with a difference in altitude of 3800m (about 50% by shuttle) with departure from Cavo and arrival in Sant'Andrea (also a more peaceful version is available, namely the GPE).
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Elba Super Trail: The hardest route on the Island of Elba (with Shuttle)
Elba Super Trail: tested and approved by Elba MTB. The track plus the wildest trails on the island (and not cycle paths), typical of the GTE (Grande Traversata Elbana) trekking version.