IRONMAN 70.3 Monterrey
Monterrey, Mexico · March · IRONMAN
Why people love it
- Pool-like downtown canal swim in clear water, about 1.2 m (4 ft) deep
- Flat, closed-road bike and flat run with aid every kilometre
- Compact Macroplaza layout with swim, transition and finish close together
- Monterrey airport is a major hub with US connections
Watch out for
- Water averages 25 °C (77 °F), so wetsuits are rarely legal
- March highs range from 23 to 39 °C (73 to 102 °F), with little shade on the run
- Field has shrunk since 2019 and recent athlete reports are scarce
- Early editions had cobbled sections and wet-surface risk on the bike
Race
How racers feel about it, how well it is run, and how it treats a first timer. Counts for 27% of the overall score.
- Racer satisfactionLiked3.4
No recent athlete reviews; only 2014 to 2015 press and one pro blog, all positive on the compact downtown format. · Low confidence
- OrganizationAdequate3.4
Compact set-up near Macroplaza with closed roads and aid every kilometre; a 2015 wrong turn and a chaotic T2 in rain were reported. · Low confidence
- First timer friendlyFriendly3.7
Flat, pool-like canal swim and closed roads suit newcomers; heat up to 39 °C (102 °F) and cobbles add risk. · Low confidence
Course traits, not part of the score
- PR potentialFast4.0
Near-flat course on paved express lanes; Tim Don won in 3:46:59 (2014) and 3:42:49 (2015). · Low confidence
- Course easeModerate3.9
Flat course; the heat, up to 39 °C (102 °F), is the challenge. · Low confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalSeldom1.8
Average water is about 25 °C (77 °F), above the 24.5 °C (76 °F) wetsuit limit, so wetsuits are rarely legal. · Low confidence
- Water temperatureAcceptable3.0
Average 25 °C (77 °F) is in the warm band, but not harsh. · Medium confidence
- Calm waterGlassy4.9
Man-made canal described as pool-like, about 1.2 m (4 ft) deep, with no swell. · High confidence
- Swim easeEasy4.4
Point-to-point in a shallow canal with full visibility and a rolling start; a narrow channel can bunch swimmers. · Medium confidence
- Swim experienceGreat3.5
Clear, warm and lined by spectators, but a concrete canal rather than natural water. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceGood3.8
Recent description says paved and in good condition; 2014 and 2015 had manufactured cobbles and wet-surface risk. · Low confidence
- Road closuresFully closed4.5
Closed roads were reported and the express lanes are separated from traffic. · Medium confidence
- Bike sceneryPleasant2.5
Urban freeway riding with a city and mountain backdrop. · Medium confidence
- WindMostly calm3.5
No wind complaints in any source. · Low confidence
Course traits, not part of the score
- Bike speedFast4.0
Two laps on the express lane of the Constituyentes freeway; early editions noted tight turns and cobbles. · Medium confidence
- Bike flatnessPancake flat4.5
Described as nearly flat apart from a few vehicle bridges; no elevation total published. · Low confidence
- Bike simplicityMostly simple3.8
Mostly freeway lanes with a few bridge ramps and turns around Macroplaza. · Low confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportStrong3.5
The riverwalk gives spectators easy access and a hometown crowd was noted in 2015; attendance is unclear. · Low confidence
- Aid stationsGood4.4
Aid every kilometre with mile and 5 km (3.1 mi) markers is listed. · Medium confidence
- Run sceneryBeautiful3.5
Riverwalk and Fundidora Park industrial heritage, with the Sierra Madre behind. · Medium confidence
- Run conditionsModerate3.0
Flat surface, but March heat can reach 39 °C (102 °F) with little shade. · Low confidence
Course traits, not part of the score
- Run flatnessFlat4.5
Flat and paved, with a few stairs leaving transition. · Medium confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperatureWarm or cool3.1
Average 25 °C (77 °F), but highs on 1 March ranged from 23 to 39 °C (73 to 102 °F) in 2022 to 2026. · Medium confidence
- Weather reliabilityReliable3.5
Mostly dry season, but the 2015 edition had drizzle and rain; highs swing widely. · Low confidence
- Venue beautyLovely3.5
Landscaped riverwalk with a mountain backdrop in a big industrial city. · Low confidence
- Spectator friendlyEasy4.4
Compact point-to-point layout in the old town was described as spectator friendly. · Medium confidence
Course traits, not part of the score
- Low altitudeLow3.5
Monterrey is roughly 540 m (1,770 ft) above sea level. · Low confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityGood4.2
Large metro area with many downtown hotels. · Low confidence
- Hotel valueGood3.8
Big-city pricing; no price data in the sources. · Low confidence
- WalkabilityWalkable4.0
Swim, transition and finish are all around Macroplaza, with a roughly 15 minute walk to the 2014 swim start. · Low confidence
- Travel easeEasy4.0
Monterrey International is a major hub with US connections. · Medium confidence
- LogisticsSimple4.0
Compact layout with transition and finish in the Macroplaza area. · Medium confidence
- Town and foodGood3.8
Large city with a strong restaurant scene; athletes have not reviewed it. · Low confidence
Key facts
- Location
- Monterrey, Nuevo Leon, Mexico
- Typical month
- March
- Latest or next date
- 1 March 2026
- Organiser
- IRONMAN
- Field size
- About 850 athletes
- First held
- 2014
- Distances
- 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run
- Swim venue
- Santa Lucia River (man-made canal), downtown Monterrey (canal)
- Water temperature
- 24–26 °C (75–79 °F)
- Swim start
- rolling
- Swim laps
- 1
- Bike laps
- 2
- Key climbs
- A few vehicle bridges
- Run laps
- 2
- Run shade
- Limited, city streets and park
- Air temperature
- 6–39 °C (43–102 °F)
- Altitude
- 540 m (1,770 ft)
- Nearest airport
- Monterrey International (MTY)
- Where to stay
- Downtown near Macroplaza, Barrio Antiguo
- Booking
- Large metropolitan area with ample downtown hotels; not documented in sources.
What racers and reviewers say
- Triathlon Magazine CanadaRaced 2014 · article · Positive
Launch announcement for the inaugural 2014 race. Describes a downtown format: swim in the Santa Lucia River finishing at the history museum, a fast 90 km (56 mi) bike from Macroplaza, and a two-loop run along the riverwalk and through Fundidora Park. Promotional rather than evaluative.
- Triathlon Magazine Canada race reportRaced 2014 · article · Positive
Report on the first race, won by Heather Wurtele in 4:07:47 and Tim Don in 3:46:59. Highlights a fast bike course and compact downtown layout.
- TRS Triathlon race reportRaced 2015 · article · Positive
Describes a pool-like 1.9 km (1.2 mi) point-to-point swim in a shallow canal, damp riding on closed roads and manufactured cobbles, and rain on the run that made T2 chaotic. Calls the event compact and spectator friendly with a hometown crowd. One pro took a wrong turn on the run.
“compact and spectator friendly”
- Ben Hoffman race blogRaced 2014 · blog · Positive
Third-place pro account. Swim in a slow, river-like canal; bike on old cobbled sections and open highway where he flatted around mile 24; run through Fundidora Park. Notes a short walk between bike racking and swim start and a lively city the day before.
“The pace was hard from the start”
- RaceRaves race pageRaced 2026 · aggregator · Positive
No athlete reviews yet. Course notes: warm rolling-start river swim at about 25 C (77 F) with 100% visibility, near-flat two-lap bike on paved freeway express lanes, and a flat closed-road run with aid every kilometre. Historical March 1 highs 23-39 C (73-102 F).
Show 1 more
- Endurance Data statisticsRaced 2023 · aggregator · Mixed
Field data only: about 1,595 starters in 2019, about 1,046 in 2022, and 852 in 2023 with 739 finishers, mostly Mexican athletes. Shows a shrinking field since 2019.
Sources
Pages we used for facts and ratings. See how we rate.
Training for IRONMAN 70.3 Monterrey? Moku Coach builds your plan around race day.