July 2026 · Competition window Ed. 01 / 2026 Monterrey · MX

Solve a location-routing problem at industrial scale.

A community optimization competition organized by the Mexican Society of Operations Research, with Hexaly as Diamond partner. Benchmark your methods against Hexaly Optimizer on 30 CLRP instances. Present your results at the XIV CSMIO conference in Monterrey.

Organized by SMIO — Sociedad Mexicana de Investigación de Operaciones XIV CSMIO Monterrey 2026 Diamond sponsor Hexaly
Problem
CLRPCapacitated Location Routing
Instances
30200–3,000 customers
Tracks
02Undergraduate · Open
Window
~3 wkMid-July → Early Aug
Top prize
CSMIOTravel + stage · $1,000 bonus
Conference
Oct 7–9XIV CSMIO · Monterrey
01 / The Challenge

Three weeks.
One leaderboard.
Real benchmarking.

Before the competition opens, Hexaly Optimizer produces a baseline solution for each instance. Participants then find the best solutions they can, using any method — metaheuristics, branch-and-price, matheuristics, machine learning. A public leaderboard tracks progress in real time. Results become a permanent benchmark for the OR community.

01

Win the stage

Sponsored travel and a dedicated presentation slot at CSMIO 2026 in Monterrey for one member of each winning team. Plus Amazon gift cards and Hexaly merch for the whole team.

02

Benchmark rigorously

Test your algorithms against a strong industrial solver on a rich, under-studied combinatorial problem with direct real-world relevance.

03

Join the community

Present at Mexico's premier OR conference. Publish results in a permanent benchmark library alongside researchers and practitioners.

02 / How it works

From registration to award ceremony.

The competition window is an execution sprint — teams have had access to the instance generator for weeks before the real instances drop. Develop freely, then push hard when the leaderboard goes live.

01 / PREP

Register and build

Form a team (up to 3, plus a guide for the Undergraduate track). Register on the platform. Develop methods using the open-source instance generator released in June 2026. Official competition instances are not published at this stage.

02 / RUN

Compete

When the competition window opens (~3 weeks in July), official instances and Hexaly's baseline solutions are published. Submit solutions through the platform. Lead-time scoring rewards finding good solutions early and holding them.

03 / PRESENT

Present at CSMIO

Winners are invited to present their approaches at a dedicated Challenge session during CSMIO 2026 in Monterrey. Final solutions become a permanent public benchmark.

03 / The Problem

Where to open depots.
How to route vehicles.

The CLRP combines two hard decisions in a single model. It's directly relevant to companies like OXXO, Bimbo, and FEMSA, who face these decisions daily in Mexico's logistics landscape. No single algorithmic paradigm dominates — which is precisely what makes it a good challenge.

# objective
min  Σ fi · yi   // depot opening
   + Σ v · zr     // vehicles dispatched
   + Σ cij · xij   // travel distance
subject to customer service,
vehicle & depot capacity, vehicle limits.
Read the full problem specification
04 / Partners

Organized by SMIO, powered by Hexaly.

A Diamond-sponsor partnership between the Mexican OR community and a leading industrial optimization technology company.

SMIO

Sociedad Mexicana de Investigación de Operaciones

The scientific society that represents the Operations Research community in Mexico. Organizer of the XIV CSMIO conference and custodian of the challenge's educational mission through the Undergraduate track.

smio.org → csmio2026 →
Hexaly

Diamond sponsor

Hexaly is an industrial optimization company whose solver produces the baseline solutions for every instance. Free academic licenses are provided to every participant — whether or not you use Hexaly to compete.

hexaly.com →
Ready to compete?

Register your interest
and we'll notify you when the platform opens.

Formal team registration opens alongside the instance generator release in June 2026.

Register interest