IRONMAN 70.3 Kraichgau
Bad Schönborn / Ubstadt-Weiher, Germany · May/June · IRONMAN 70.3
Why people love it
- Calm, enclosed lake swim at 18-23 °C (64-73 °F), usually wetsuit legal
- Wine-country bike through Sinsheim and Eppingen with village crowds
- Flat, closed three-lap 21.1 km (13.1 mi) run beside the lake
- Mild race-day range of 10-22 °C (50-72 °F)
- Heidelberg makes a good base, about 25 minutes (15 mi) away
Watch out for
- Punchy rollers add up to 900-1,130 m (2,950-3,710 ft) of bike climbing; do not overcook the first hill
- Registration reportedly sells out 4-6 months ahead
- Few hotels within walking distance of the lake, and they fill 6 months out
- Parking fills early; arrive by about 5:30 AM or use park-and-ride
- Sources disagree on one or two swim laps; check the current athlete guide
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 satisfactionLoved3.8
No first-person reviews were found. A race guide and Runner's World Germany praise the scenery and describe a demanding course with thousands of spectators. · Low confidence
- OrganizationWell run4.0
An established IRONMAN race of about 2,500 athletes with closed roads and aid every 2-3 km (1.2-1.9 mi). No complaints were found. · Low confidence
- First timer friendlyDoable3.4
A calm lake and good run support, but 900-1,130 m (2,950-3,710 ft) of bike climbing makes it harder than most first halves. · Low confidence
Course traits, not part of the score
- PR potentialAverage2.8
Pros ride 2:11 to 2:15, but one guide says age-groupers lose 10-15 minutes against flat courses because of the rollers. · Low confidence
- Course easeTough3.0
Hilly for a 70.3, offset by mild temperatures and a flat run. · Low confidence
Swim
Wetsuit odds, water temperature, calm, and the experience of the start. Counts for 15% of the overall score.
- Wetsuit legalAlmost always4.5
Early-June water is 18-22 °C (64-72 °F), under the 24.5 °C (76.1 °F) limit, and one guide says wetsuits are legal almost every year. · Medium confidence
- Water temperatureComfortable4.0
18-23 °C (64-73 °F) is comfortable in a wetsuit. · Medium confidence
- Calm waterGlassy4.5
An enclosed lake with no boats, current or chop, according to a guide and ironman.com. · Medium confidence
- Swim easeEasy4.2
A simple lake swim that suits weaker swimmers; sources disagree on whether it is one loop or two. · Low confidence
- Swim experienceGreat3.7
Clear water and flat banks, but little is known about the start format or surroundings. · Low confidence
Bike
Road surface, closures, scenery and wind. Counts for 19% of the overall score.
- Road surfaceGood3.8
Mostly good German asphalt with some rough village stretches, per one guide. · Low confidence
- Road closuresMostly closed3.8
A single-loop route through villages; how fully it is closed is not explicitly documented. · Low confidence
- Bike sceneryBeautiful4.0
Forests, vineyards, orchards and half-timbered Eppingen, praised by Runner's World Germany and a guide. · Medium confidence
- WindMostly calm3.5
No notable wind complaints, and the rolling wine country offers some shelter. · Low confidence
Course traits, not part of the score
- Bike speedAverage2.8
Pro splits are quick, but 900-1,130 m (2,950-3,710 ft) of climbing costs amateurs time on the rollers. · Low confidence
- Bike flatnessHilly2.4
About 1,081-1,130 m (3,547-3,710 ft) of gain over 90 km (56 mi) in several sources; clearly hilly. · Medium confidence
- Bike simplicitySome technical parts3.0
Punchy rollers and sharp bends, but no extreme descents were reported. · Low confidence
Run
Crowds, aid stations, conditions underfoot and scenery. Counts for 13% of the overall score.
- Crowd supportStrong3.8
Village crowds on the bike are described as enthusiastic, and the three-lap run adds repeat viewing. · Low confidence
- Aid stationsGood3.9
Aid every 2-3 km (1.2-1.9 mi), according to a guide. · Low confidence
- Run sceneryPleasant3.2
A lakeside and parkland run, pleasant rather than spectacular. · Low confidence
- Run conditionsEasy4.0
Mild early-summer temperatures, partial shade and closed roads. · Low confidence
Course traits, not part of the score
- Run flatnessMostly flat4.4
Mostly flat, three laps around the lake. · Low confidence
Conditions
Air temperature, how predictable the weather is, setting, and spectating. Counts for 15% of the overall score.
- Air temperaturePleasant4.2
Race-date range of 10-22 °C (50-72 °F). · Medium confidence
- Weather reliabilityVariable3.2
Late May or early June in southwest Germany can bring rain or heat; evidence is limited. · Low confidence
- Venue beautyLovely3.5
A pleasant lake and wine-country setting, not a dramatic one. · Low confidence
- Spectator friendlyEasy3.6
The three-lap run and village crowds help; the bike is a single loop. · Low confidence
Course traits, not part of the score
- Low altitudeSea level4.7
Rhine plain, roughly 100-200 m (330-660 ft) above sea level. · Medium confidence
Stay and travel
Hotels, walkability, getting there, and the town around the race. Counts for 11% of the overall score.
- Hotel availabilityBook early2.8
Few hotels near the lake book up 6 months ahead, and registration reportedly sells out 4-6 months ahead. · Low confidence
- Hotel valueNormal3.3
Heidelberg, Sinsheim and Karlsruhe offer a range of prices; no price data was found. · Low confidence
- WalkabilitySome driving3.0
Heidelberg is about 25 minutes (15 mi) away, with only a few hotels within walking distance. · Low confidence
- Travel easeEasy4.0
Frankfurt is about 1 hour (100 km (62.1 mi) / 62 mi) by car or ICE, with S-Bahn from Heidelberg. · Medium confidence
- LogisticsSimple3.8
A single lake venue with one main transition, but parking fills early. · Low confidence
- Town and foodGood3.8
Heidelberg is an atmospheric base with plenty of food; Bad Schönborn is a spa town. · Low confidence
Key facts
- Location
- Bad Schönborn / Ubstadt-Weiher, Baden-Württemberg, Germany
- Typical month
- May/June
- Latest or next date
- 23 May 2027
- Organiser
- IRONMAN 70.3
- Field size
- About 2,500 athletes
- Distances
- 1.9 km (1.2 mi) swim, 90 km (56 mi) bike, 21.1 km (13.1 mi) run
- Swim venue
- Kraichgausee / Hardtsee (Ubstadt-Weiher) (lake)
- Water temperature
- 18–23 °C (64–73 °F)
- Wetsuit
- Legal
- Swim start
- rolling
- Bike climbing
- 1,130 m (3,710 ft)
- Bike laps
- 1
- Key climbs
- No single hero climb; constant 1-3 minute punchy rollers (e.g. around Waldangelloch)
- Run laps
- 3
- Run shade
- partial
- Air temperature
- 10–22 °C (50–72 °F)
- Nearest airport
- Frankfurt (FRA); also Stuttgart (STR), Karlsruhe/Baden-Baden (FKB)
- Where to stay
- Heidelberg, Sinsheim, Karlsruhe
- Booking
- Few hotels near the lake that book 6+ months ahead; Heidelberg (about 25 min / 15 mi by car or S-Bahn) is the usual base; Sinsheim and Karlsruhe cheaper.
What racers and reviewers say
- Prommer race guideRaced 2026 · article · Mixed
Coaching-site guide calling Kraichgau the climber's 70.3 of Europe. Notes a calm lake swim that is friendly to weak swimmers, a punchy single-loop bike of roughly 900-1,000 m (2,950-3,280 ft) climbing, a flat three-lap run, and a base in Heidelberg. Suggests pure time-trial riders could lose 10-15 minutes versus flat 70.3s.
- Runner's World Germany race listingRaced 2026 · article · Positive
Listing describes the 90 km (56 mi) bike as demanding with 1,130 m (3,710 ft) of climbing from gentle rises to sharp bends, the run as mostly flat, and scenery moving from forest to vineyards and orchards, with thousands of spectators and athletes from about 40 nations.
- Slowtwitch (Frodeno, Frederiksen 2019)Raced 2019 · article · Positive
Pro race report: Frodeno won in 3:53:06 with a 2:14:57 bike and a 1:12:09 run and described the area in memorable terms; Frederiksen won the women's race in 4:31:26.
“the land of 1000 hills”
- Slowtwitch (Frodeno, Philipp 2018)Raced 2018 · article · Positive
Frodeno won wire-to-wire in 3:49:05 with a 23:29 swim, 2:11:03 bike and 1:11:06 run; Philipp overcame a 2:14 swim deficit to win in 4:20:50, showing a course where strong bikers and runners can recover time.
- Slowtwitch (Stein, Beranek)article · Mixed
Race report mentioning several spiked hills on the bike topping out at 265 m (869 ft) altitude; women's best bike was 2:31:18 and the winner ran 1:22:43.
Show 4 more
- Slowtwitch (Kienle, Gajer)article · Positive
Challenge-era report: Kienle built a lead over the 90 km (56 mi) bike and called the weather and course excellent; the 21 km (13 mi) run was done in three laps, matching the current format.
- 220 Triathlon (Kienle 2015)Raced 2015 · article · Positive
Report describing the bike as hilly and a showcase for Kienle's strength after a slow transition.
- ROUVY course pageRaced 2026 · article · Mixed
Virtual-ride page labelling the bike hilly with rolling roads, punchy climbs and fast descents; its elevation numbers are internally inconsistent so were ignored.
- RaceRaves listingRaced 2027 · aggregator · Mixed
No athlete reviews posted yet, only course facts: one-loop swim in Hardtsee with clear water averaging 23 C (73 F), hilly one-loop bike, flat three-lap run.
Sources
Pages we used for facts and ratings. See how we rate.
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