Medio Maratón Feria Nacional San Marcos
Race snapshot
Race Day
46–90°F · Feels mild
Total elevation gain
Relatively flat course · Net elevation change +16 ft
Participants
Major marathon
Crowd Rating
Good crowd energy
The Lowdown
Medio Maratón Feria Nacional San Marcos, branded 21K El Gigante de México, is the half marathon of the Feria Nacional de San Marcos in Aguascalientes, Mexico. The state sports institute (IDEA) organizes it on the Saturday of the fair in April. The first edition took place on April 18, 2026, starting at 7:00 am on Avenida Francisco I. Madero in the historic center, and drew more than 23,000 participants across the 21K, 10K, 5K and 3K. The 21.0975 km route is certified by World Athletics and AIMS and follows Avenida Adolfo López Mateos, Avenida Convención de 1914, Avenida Heroico Colegio Militar and the Glorieta de la Purísima. Finishers receive a gold-finish medal, and the 21K and 10K carry cash prizes. The 2026 half marathon entry was 300 MXN; the 2027 date and pricing are not yet announced.
Questions about the Medio Maratón Feria Nacional San Marcos 2027
When is the Medio Maratón Feria Nacional San Marcos 2027?
Saturday, April 17, 2027.
Where is the Medio Maratón Feria Nacional San Marcos?
Aguascalientes, Mexico.
What time does the Medio Maratón Feria Nacional San Marcos start?
The race starts at 7:00 AM, local time.
How do I enter the Medio Maratón Feria Nacional San Marcos 2027?
Registration has not opened yet. Ways in: Online registration on the organizer's registration site; In-person registration at the Gimnasio Olímpico, Monday to Friday, 8:00 am to 8:00 pm.
How much does the Medio Maratón Feria Nacional San Marcos 2027 cost?
21K Half Marathon: MX$300. 10K: MX$200.
What is the Medio Maratón Feria Nacional San Marcos elevation gain?
60 m (197 ft) of total elevation gain. Net elevation change: +5 m (16 ft). Relatively flat course.
What is the weather like at the Medio Maratón Feria Nacional San Marcos?
Race-day temperatures are usually 8–32 °C (46–90 °F). Feels mild.
How many runners does the Medio Maratón Feria Nacional San Marcos have?
23,000 participants. Major marathon.
Where are the Medio Maratón Feria Nacional San Marcos results?
The official 2026 results are on the organizer's site. Official results
Prepare for This Race
Running this race?
MarathonOS puts your race countdown on your Lock Screen and keeps every race-week checklist on your phone. Checklists and your race report are free for your first race.
Scan to download
Community
Community Reviews
Learn from fellow runners and share insights that will help the next person toe the line.