The Copenhagen Marathon is back on the Danish capital's calendar this Sunday, 10 May, with race organisers confirming a sold-out field of 25,000 runners and a 9:30 a.m. mass start on Oster Alle. It is the 45th edition of an event that has spent the last decade quietly establishing itself as one of the largest spring marathons in continental Europe, alongside Paris and Madrid, and the first edition since the city's planning authority signed off on a slightly redrawn route through Frederiksberg and Norrebro that should make for a faster final 10 kilometres.
The international Elite A field is led by a strong Kenyan and Ethiopian contingent who arrived in Copenhagen this week off the back of focused spring training in Iten and the Bekoji highlands. Race director Dorte Vibjerg confirmed at Friday's pre-race press conference that the men's field includes seven runners with personal bests under 2:08 and a women's field built around three returners from the 2025 podium, with course-record bonuses unchanged from last year's edition. Organisers have stopped short of nominating a single favourite in either race, which they have framed as a strength of this year's startlist rather than a weakness.
Sunday's weather looks cooperative for the kind of fast time the new course profile invites, with overnight low temperatures around 7 degrees rising to a forecast peak of 14 degrees by the time the lead pack reaches Bispebjerg, and only a light north-westerly breeze across the open stretches at Soborg and Damhussoen. Several elite agents based in the city have already flagged the conditions as favourable for a course-record assault on either side of the field. The course itself, an undulating one-loop tour through eight Copenhagen neighbourhoods, is fast on paper but punctuated by a series of short climbs in the second half that historically separate the lead group between 30 and 35 kilometres.
Beyond the elite race, the size of Sunday's mass field is the bigger story for Danish road running. Copenhagen confirmed in early March that all 25,000 bibs had cleared, with foreign entries accounting for just under 40 per cent of the total — the highest international share in the event's history. The DGI-byen finish village reopened on Friday with expanded volunteer staffing and a new walk-through of the post-race medical area, and organisers said in a Friday afternoon update that they had completed the final transponder checks for the elite start row at the Parken stadium gate.
For Danish runners, Sunday is also a Copenhagen Half Marathon Championship qualifier, with the top three Danish men and women guaranteed automatic places in the September half. That subplot is doing more than usual to thicken the domestic startlist this year, with a pair of well-known Aarhus-based runners expected to push hard through halfway in pursuit of qualifying times. The race begins at 9:30 a.m. local time on Oster Alle, with the elite finish expected just before midday at the same point — a familiar Copenhagen Marathon flourish that returns the leaders to the start line they crossed three hours earlier.