The short answer
Many races let you switch distance until a date set in the rules, sometimes the same as for a change of holder. If you move up to a longer one you may pay the difference; if you move down, you don't always get anything back.
Until when
The rules set the deadline, and it often matches other changes to the entry.
- Murcia Marathon 2027: switching distance until 20 January 2027, the same day as the change of holder.
- Santa Pola Half Marathon 2027: switching to the 10K until 20 December 2026.
- Rock 'n' Roll Madrid 2027: switching distance until 15 March 2027, together with changes of holder and of details.
What it costs
- Transgrancanaria 2027: switching event is requested up to 30 days before and, if it is longer, you pay the difference.
- Val d'Aran by UTMB 2027: to a shorter distance, until 30 May 2027 and if there are places, with no refund of the difference.
- Málaga Marathon 2026: from marathon to half, before 2 November and with no refund, according to its FAQ.
If you transfer your bib
The person taking your bib signs up like any other runner: if they want another distance, they ask the organiser, if the rules allow it and within the deadline. At the Transgrancanaria, for example, the rules allow it with the same 30-day deadline.
Sometimes each distance has its own guide on Pasadorsal, like the Murcia Marathon and Half Marathon.
Sources
- Murcia Marathon 2027 rules, read on 15 Oct 2026. RulesIts guide
- Santa Pola Half Marathon 2027 rules, read on 15 Oct 2026. RulesIts guide
- Rock 'n' Roll Madrid 2027 entry policy and FAQ, read on 26 Oct 2026. FAQIts guide
- Transgrancanaria 2027 rules, read on 8 Nov 2026. RulesIts guide
- Val d'Aran by UTMB 2027 registration conditions, read on 8 Nov 2026. ConditionsIts guide
- Málaga Marathon 2026 rules and FAQ, read on 29 Oct 2026. RulesIts guide
Reviewed on 8 Nov 2026.