The Holland Hills Classic, called nowadays the Boels Rental Hills Classic due to sponsorship reason, was a women's elite professional road bicycle race held annually between 2004 and 2016 in Limburg, the Netherlands. The race is an 1.1 UCI category race. The event is organized by the Stichting Holland Ladies Tour, who also organizes the Holland Ladies Tour. For sponsorship reasons the race has had the official titles: Gulpen Hills Classic (2004-2007), Valkenburg Hills Classic (2010), Parkhotel Rooding Classic (2011), Parkhotel Valkenburg Hills Classic (2012) and Boels Rental Hills Classic (2013-2016).
The first four years the race was held in August, with the start and finish in Gulpen. Since 2008 the start and finish are held in Valkenburg aan de Geul and in 2011 the race moved on the calendar to the spring. Since 2014 the start is in Sittard and the finish is on top of the Geulhemmerberg hill in Berg en Terblijt.
In September 2016, shortly after Amstel Gold Race announced their inaugural women's race for 2017 on mainly the same parcours, in the same region and in the same part of the season, the main sponsor Boels Rental and race director Thijs Rondhuis said there won't be a Hills Classic in 2017.