IRONMAN 70.3 Western Massachusetts
Springfield, United States · June · IRONMAN 70.3
Latest edition: Held 2023-2026 in Springfield. IRONMAN has paused the race for summer 2027 after repeated swim cancellations (2025 and, per reports, 2026) and athlete feedback; organizers are seeking another swim location.
Why people love it
- Downtown Springfield venue with a compact footprint; Bradley airport is about 40 km (25 mi) away
- Run through Forest Park and a countryside bike loop into Connecticut
- About 1,000 volunteers and local crowds on the bike
Watch out for
- Swim cancelled for sewage overflow in 2025 and, per reports, 2026; race paused for 2027
- Hilly, technical bike with 90-degree turns and some rough pavement
- Parking-garage transition means a long run to your bike
- Few spectator spots, and downtown eateries were closed on race day
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 satisfactionLiked2.7
Run and organisation praised, but swim cancellations in 2025 and 2026 and a hilly, technical bike dominate; one racer gave the swim 0/10. · Medium confidence
- OrganizationAdequate3.3
Described as well run, but with 90 minute timing waits in 2025, a long garage transition and a start-order flip on race morning in 2026. · Medium confidence
- First timer friendlyDoable2.5
A hilly, technical 90 km (56 mi) bike and an uncertain swim make this harder than advertised for newcomers. · Low confidence
Course traits, not part of the score
- PR potentialSlow2.4
Hilly, stop-and-go bike and a hilly run; no winning times were found. · Low confidence
- Course easeVery tough2.4
Hilly, technical bike and a hilly two-loop run, with swings in weather. · Low confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalCoin flip3.2
No water-temperature data found, and the swim has not run in the last two years. · Low confidence
- Water temperatureAcceptable3.0
No race-day data; early-June river temperature is unknown. · Low confidence
- Calm waterSome chop2.6
Downstream current and high flows after rain; the swim was cut for safety in 2025. · Medium confidence
- Swim easeEasy3.7
Downriver and shallow when it runs, but bunching at the start was reported. · Low confidence
- Swim experienceMeh1.8
Repeatedly cancelled over sewage overflow; the one racer who swam it in 2023 liked the clear, sandy river. · Medium confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceMixed2.6
Bumpy pavement in 2023, improved by the 2024 reroute; a 2026 racer called it typical New England. · Medium confidence
- Road closuresPartly closed2.9
A 2026 racer complained of cars on course and single-file lanes. · Low confidence
- Bike sceneryBeautiful3.8
One racer scored the bike 8/10 for scenery; rural towns and homes cheering. · Low confidence
- WindSome wind3.4
Wind is not mentioned as an issue. · Low confidence
Course traits, not part of the score
- Bike speedSlow2.3
Hilly with 90-degree turns at the bottom of descents, so speed is hard to carry; the 2024 reroute was meant to help. · Medium confidence
- Bike flatnessHilly2.4
Racers call it hilly; elevation is not published, so assume well above 900 m (2,950 ft). · Low confidence
- Bike simplicityTechnical2.0
Technical: sharp turns after descents and stop-and-go riding. · Medium confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportDecent3.0
Homes cheer along the bike, but the two-loop out-and-back run is hard for spectators to follow. · Low confidence
- Aid stationsStandard3.4
No major aid complaints. · Low confidence
- Run sceneryBeautiful3.8
Riverside bike path and Forest Park; one racer scored it 8.5/10. · Medium confidence
- Run conditionsModerate2.8
Hilly, hot and shade-poor in 2023; one 2026 racer found it harder than expected. · Medium confidence
Course traits, not part of the score
- Run flatnessRolling2.5
Described as hilly, with Log Hill and Forest Park. · Medium confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperatureWarm or cool3.2
A cold morning and warm run in 2023, then cold and rain in 2024. · Low confidence
- Weather reliabilityUnsettled2.4
Rain contributed to swim cancellations, and conditions swing between years. · Medium confidence
- Venue beautyPleasant3.0
Urban riverfront; the Forest Park run section is attractive. · Low confidence
- Spectator friendlySome viewpoints2.5
The athlete guide gives little spectator guidance, and the loops are out-and-back. · Low confidence
Course traits, not part of the score
- Low altitudeSea level5.0
About 20 m (66 ft) above sea level. · High confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityGood3.8
No sell-out evidence; city hotels. · Low confidence
- Hotel valueNormal3.4
One poor hotel experience was reported; no pricing data. · Low confidence
- WalkabilityWalkable3.5
Compact downtown venue with a parking-garage transition. · Low confidence
- Travel easeEasy4.0
Bradley airport is about 40 km (25 mi) away and praised for access. · Medium confidence
- LogisticsSome complexity3.2
Single downtown venue, but a long run to bikes in the garage, about a 10 minute transition. · Low confidence
- Town and foodFine2.8
Downtown restaurants were closed on race day and food trucks were pricey. · Low confidence
Key facts
- Location
- Springfield, Massachusetts, United States
- Typical month
- June
- Latest or next date
- 7 June 2026
- Organiser
- IRONMAN 70.3
- Field size
- About 1,500 athletes
- First held
- 2023
- Distances
- 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run
- Swim venue
- Connecticut River, downriver from near the North End Bridge to Memorial Avenue / Riverfront Park area (river)
- Swim start
- rolling (a first-out arrangement was reversed on race morning in 2026)
- Swim laps
- 1
- Bike laps
- 1
- Run laps
- 2
- Run shade
- 2023 racer reported little shade; Forest Park sections are tree-lined
- Air temperature
- 13–26 °C (55–79 °F)
- Humidity
- moderate
- Altitude
- 20 m (66 ft)
- Nearest airport
- Bradley International (BDL), about 40 km (25 mi); Boston (BOS) about 145 km (90 mi), 40 km (25 mi) away
- Where to stay
- Downtown Springfield near MassMutual Center
- Booking
- One 2026 racer had a bad hotel experience; no availability data found.
What racers and reviewers say
- Slowtwitch forum: Western Mass 70.3 (swim cancelled)Raced 2026 · forum · Mixed
2026 thread. Racers rate the swim 0/10 because it keeps being cancelled over wastewater overflow, call the bike harder than advertised but scenic (8/10) with tolerable pavement, and the run quite nice though hilly. Event is described as quite well run, with transitions via a parking garage.
“The bike is harder than advertised”
- Slowtwitch forum thread, page 2Raced 2026 · forum · Mixed
A 2023 racer remembers a clear sandy river swim and a hilly, poorly paved first-year bike course. Others complain about cars on course, a hot shadeless run, an easy compact venue and a bad hotel stay; one says the swim history would stop a return.
- Western Mass News: first IRONMAN debutsRaced 2023 · article · Mixed
Debut coverage from 11 June 2023. Athletes praised organization and crowd support for a first edition, but called the bike hilly and technical with sharp turns after descents and some bumpy pavement. The cold morning to warm run transition was tough.
“It was really well done for the first time here.”
- Western Mass News: course changes for 2024Raced 2024 · article · Positive
Explains the move of transition to the I-91 garage, the bike detour into Suffield CT (about 10-15 miles / 16-24 km (9.9–14.9 mi)) for fewer turns and better surfaces, and a new run via Log Hill and Forest Park.
- Western Mass News: 2025 swim cancelledRaced 2025 · article · Mixed
The 2025 swim was cut hours before the start over sewer overflow after heavy rain; about 1,200 of 1,500 registered raced bike-run. Race director called finisher feedback phenomenal.
Show 2 more
- WWLP: IRONMAN 70.3 Western Mass put on holdRaced 2026 · article · Negative
IRONMAN paused the race for 2027 after a review citing repeated swim cancellations and athlete feedback; untreated sewage in the Connecticut River stopped swimming for a second year. Finding another swim venue is difficult.
- Western Mass News: first responders preparing (2026)Raced 2026 · article · Positive
Preview of the 7 June 2026 edition: 1,600+ athletes, about 1,000 volunteers, nine-plus safety boats, and organizers who said they were optimistic about the downriver swim after consulting the water utility.
Sources
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