Duch Lasu Ultra offers a mixed-format race series featuring multiple distances. While a specific host town and season are not provided, the race options include timed runs of 3, 6, 9, 12, and 24 hours, alongside backyard ultra, vertical, swimrun, obstacle, relay, team, stage, orienteering, night, and stair-race formats.
The courses can be road, trail, or mountain, with distances from under 5 km up to marathon and ultra distances. Participants receive aid-station provisions, a post-finish recovery meal, electronic timing, a bib, a medal, race merchandise, and awards for top male and female finishers on each course. All participants must carry a powered mobile phone with sufficient battery for several hours, pre-loaded with the emergency contact and organizer's number.