Case studies

Fitogether: Elevating global sports performance tracking with u-blox Locate

Centimeter-accurate, base-station-free athlete monitoring takes to the streets at the 2025 MBN Seoul Marathon 

Korean runner wearing a vest containing the Fitogether runner tracking device

Fitogether, a global leader in athlete performance monitoring, successfully deployed its next-generation runner-tracking technology at the 2025 MBN Seoul Marathon, equipping 250 runners with wearable devices powered by u-blox Locate, an integrated solution combining a u-blox GNSS receiver (ZED-F9P) with PointPerfect Flex PPP-RTK correction services.

The result: real-time, centimeter-accurate positioning without the need for traditional base-station infrastructure, unlocking deeper insight into speed, posture, fatigue, and running efficiency across every segment of the race.
 

Challenges

 

Challenge 1: Achieving high-precision tracking in dynamic, dense environments 

Marathons pose complex positioning challenges: thousands of runners, crowded urban environments, and constantly changing movement patterns. 

Fitogether required centimeter-level, real-time accuracy to correctly analyze form stability, internal load, and performance output, three key indicators that cannot be reliably captured with standard wearables or GPS alone. 

Precise tracking was essential for identifying subtle but critical biomechanical variations such as upper-body oscillations, left-right balance shifts, or cadence breakdowns that influence injury risk and performance decline. 

Challenge 2: Eliminating dependency on fragile, time-consuming base-station setups 

Traditional athlete-tracking solutions rely on local base stations that are expensive to install, vulnerable to interference, and require significant on-site support. 

For large public events like a major city marathon, where logistical windows are tight and mobility is essential, Fitogether needed a solution that: 

  • avoids local infrastructure entirely
  • ensures uninterrupted tracking during crowded, long-distance events
  • scales effortlessly across venues, sports, and global locations 

They required a reliable, infrastructure-free alternative. 

Challenge 3: Enhancing athlete insights beyond standard GPS and smartwatch data 

Fitogether’s mission is to transform raw positioning data into actionable performance intelligence. 

To accurately evaluate: 

  • runner posture and form stability
  • fatigue accumulation (internal load)
  • pace efficiency vs. actual exertion 

Fitogether needed a high-precision, low-latency positioning foundation to feed its analytics engine. Standard GPS wearables cannot deliver the detailed biomechanics needed for elite-level performance diagnostics

 


Fitogether’s enhanced marathon-tracking solution integrates u-blox Locate, combining u-blox GNSS receivers with the PointPerfect Flex PPP-RTK correction service, delivering true centimeter-level athlete positioning without local base stations. 

This capability enabled Fitogether to capture runner data across the entire 42 km race, including posture oscillations, fatigue onset, and segment-by-segment form degradation. 

“Using u-blox PointPerfect, we can now deliver precise, real-time performance data anywhere in the world,” said Chulwoo Park, CTO, Fitogether. “The Seoul Marathon was the perfect stage to demonstrate how our collaboration with u-blox allows us to monitor athletes more effectively than ever before.” 

Outcomes

 

Outcome #1 – Achieving cm-level precision anywhere, reliably

By integrating u-blox’s PointPerfect precise positioning service, Optimotive ensures IRIS MK2 can navigate complex environments with cm-level accuracy, allowing autonomous 3D scanning and inspection routines to operate with confidence and consistency, no matter the conditions.

“We’re automating tasks that used to take hours of expert time. PointPerfect gives us the precision we need to make IRIS a real alternative to manual fieldwork.” Scott Fairley, CEO, Optimotive

Outcome #2 – Seamless GNSS integration, minimal overhead

Optimotive successfully integrated the u-blox ZED-F9P module with PointPerfect Flex to deliver a streamlined, robust GNSS solution that works out of the box with minimal setup. The solution reduced the need for additional antennas, software licensing, or platform-specific configurations, saving on development time and field support costs.

Outcome #3 – Fully autonomous, lightweight deployment model

Thanks to the combination of u-blox GNSS and Optimotive’s modular robot-plus-base-station system (BOX), IRIS MK2 can be dropped into any environment and begin autonomous operation immediately, even off-grid. The lightweight GNSS footprint supports extended run times, simplified logistics, and scalable deployment across hundreds of job sites.

 
Korean runner wearing a vest containing the Fitogether runner tracking device

How it works 

Each Fitogether wearable device integrates u-blox Locate, combining: 

  • u-blox GNSS receiver modules
  • u-blox PointPerfect Flex PPP-RTK service
  • Fast, accurate position initialization with AssistNow 

This delivers: 

  • centimeter-level real-time positioning
  • reliable tracking in dense urban conditions
  • uninterrupted operation without base stations
  • rich data streams for advanced AI analysis 

At the Seoul Marathon, the system enabled detailed, segment-by-segment biomechanical assessment for all 250 runners equipped with the devices. 

As things stand now 

With u-blox Locate at the core, Fitogether is enabling: 

  • Precision tracking deployed at global sporting events
  • Zero-infrastructure setup for fast, reliable operation
  • Deeper understanding of athlete biomechanics and fatigue
  • Performance insights that support injury prevention
  • Expansion across soccer, American football, snow sports, and endurance events 

The Seoul Marathon demonstrated the potential for true next-generation performance monitoring in real-world conditions. 

What’s on the horizon 

Fitogether continues to expand its global sports technology footprint, integrating u-blox Locate across multiple athlete-tracking ecosystems. 

“Understanding detailed running data helps athletes achieve percentage gains to maximize performance,” said Chulwoo Park, CTO, Fitogether. “The data we’ve collected highlights fascinating running nuances for anyone serious about their journey.” 

By combining Fitogether’s advanced analytics with u-blox’s high-precision positioning, the partnership is redefining how performance, fatigue, and biomechanics are measured, setting a new standard for athlete tracking worldwide. 

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