Register for Istria300 online. The event is limited to 1.000 participants. The registration closes after the limit has been reached or at the latest on September 26th, 2020. The on-site registration is not possible. Until February 3rd, 2020 Valamar provides all Istria300 athletes, their families and accompanies a special offer where you save up to 30% on regular prices for the following accommodations in Poreč.