Dworskie Przełaje is a cross-country race day at Dwór Marzeń in Sielec. The field is capped at 100 starters, with a few extra same-day places if space permits. It takes place in July and features short events: a 5 km run, a 5 km Nordic Walking march, a 5 km military run, and a 1 km jubilee race for tied pairs. Electronic timing is provided, and each participant receives a bib, timing chip, SMS result, printout, medal, water, and a warm meal.
The route includes public roads and a mix of stony, cobbled, and soft ground, making it a local cross-country event rather than a measured road race. It is marked and secured but not PZLA-certified. Two water points and water curtains are on the course, suitable for a midsummer event. The military race requires a full field or training uniform and does not separate results by age category. The tied-pairs jubilee run competes for the Laurel of Victory. Category winners receive statuettes and cups only if they attend the ceremony. The event has a historical connection to the centenary of Jozef Unrug's appointment as Commander of the Fleet; Dwór Marzeń contains a museum dedicated to him.