Tandil, Argentina · Sunday, August 9, 2026

Fixed Distance Marathon

Tandil Ultra Trail

Race completed
45 km Distance
1,580 m Climbing
4.6 Grit · Challenging
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37.3363° S, 59.1741° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 35 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.
Time limit 10 hours 13:20 min/km average. Comfortable. Room to walk the climbs and stop at aid. More forgiving than 65% of Marathon races. Measured against 46 races of the same distance. Cut-off calculator →
Field size ~52 Small. Long stretches with nobody in sight.

DUV results for the 2025 edition (45km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, August

Daytime high 13°C
Night low 2°C
Rainfall Mostly dry
Daylight 10 h 27 m of light

Regional 2001-2020 average for August — NASA POWER, grid elevation 221 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2025 45km 52 Ezequiel Matias Manfredi · 03:49:50 Leonela Rodriguez Zule · 04:35:17
2024 45km 89 Marcos Adrian Suhit · 03:42:25 Leonela Rodriguez Zule · 04:37:15
2023 50km 71 Marcos Adrian Suhit · 04:13:01 Leonela Rodriguez Zule · 04:56:28
2022 50km 73 Marcelo Del Collado · 04:08:43 Noelia Soledad Almada Jordan · 05:23:25
2019 50km 104 Josue Nigro · 04:05:17 Natalia Silvana Meza · 04:56:54
2018 50km 139 Marcos Adrian Suhit · 04:23:24 Noelia Jesus Perez · 05:38:26
2017 50km 143 Ignacio Ilarregui · 04:09:56 Nelsa Maria Valenzuela · 05:01:46
2016 50km 145 Gustavo Ismail · 04:21:43 Marcela Carabajal · 05:21:16
2015 50km 177 Daniel Jorge Simbron · 04:25:23 Laura Emilce Gordiola · 04:44:53
2014 50km 123 Nestor Gabriel Pereyra · 04:19:34 Laura Emilce Gordiola · 05:04:26

The field shrank 42% between 2024 (89) and 2025 (52). 31% of the 2025 field were women.

DUV results for the 2025 edition (45km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Course notes

  • terrain This is a rolling course. Expect fast, runnable sections where rhythm is key.
  • gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.

Gear for this race

Chosen for 45 km of trail with 1,580 m of ascent.

New Balance

Fuel Cell Super Comp Trail

★★★★★ 4.5

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

Maurten

Gel 100

Hydrogel technology for 25g carbs per gel with minimal GI distress.

$3.5 ★★★★★ 4.7

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

Black Diamond

Distance FLZ

Lightweight folding trekking poles with FlickLock Z adjustment. 340g per pole.

$170 ★★★★★ 4.7

COROS

APEX 2 Pro

GPS running watch with 75-hour GPS battery, topo maps, and training metrics.

$500 ★★★★★ 4.7
All gear guides →

Overview

The Tandil Ultra Trail, a 45-kilometer trail race in Tandil, Argentina, has taken place 10 times since 2014. The last edition was in 2025. With 1580 meters of elevation gain over 45 kilometers, runners faced 35.1 meters of climb per kilometer.

The time limit for this race was 10 hours, which translated to a 13.3 minutes per kilometer cut-off pace. This was more generous than 65% of marathon cut-offs, but tighter than 35% of its peers.

With 52 finishers in its most recent edition, the race's field size was bigger than 54% of marathon fields, yet smaller than 45% of them.

Similar races

Other Marathon trail ultras, closest in distance first.