R1.02 · Course Intelligence Engine

Athens Marathon. The Authentic

The Athens prototype now has a deterministic, versioned course-analysis layer. R1.02 computes chainage, smoothed elevation, grade windows and terrain segments while keeping the current sampled-data limitation explicit.

Engineering onlyEnglish MVP

Race date8 Nov 202608:30 local

Distance42.195 kmCanonical marathon distance

Elevation gain336 mOfficial course-page reference

AnalysisA01COARSE_ENGINEERING

Immutable lineage

Race → Edition → Course → Geometry → Analysis

race-gr-athens-authentic-marathon→edition-gr-athens-authentic-marathon-2026→course-gr-athens-authentic-marathon-2026-c01→geom-gr-athens-authentic-marathon-2026-c01-g01-prototype→analysis-gr-athens-authentic-marathon-2026-c01-g01-a01-r1.02

Geometry prototype

Route shape

Visual sample only

Marathon startPanathenaic Stadium

The R1.01 geometry is intentionally simplified for engineering visualization. It is not authorized for distance, gradient, pacing or training calculations.

Elevation reference

Course profile

336 m official gain

0 km10 km20 km30 km42.195 km

Official narrative

Terrain phases

0.0–4.0 kmSlight DownhillHIGH source confidence

4.0–6.2 kmMemorial Loop MixedHIGH source confidence

6.0–10.0 kmFlatHIGH source confidence

11.0–17.0 kmIntermittent UphillHIGH source confidence

17.0–18.0 kmSteep Downhill ApproxMEDIUM source confidence

18.0–20.0 kmStrong Uphill ApproxMEDIUM source confidence

20.0–25.0 kmRolling UphillHIGH source confidence

27.0–28.0 kmUphillHIGH source confidence

30.0–31.0 kmHardest Prolonged UphillHIGH source confidence

31.0–37.5 kmDownhill And Flat MixedHIGH source confidence

37.5–39.0 kmCharacteristic DownhillHIGH source confidence

39.0–42.2 kmDownhill Urban FinishHIGH source confidence

R1.02 · Deterministic analysis

Course Intelligence Engine

Coarse Engineering

The engine resamples, smooths and classifies the course profile using versioned parameters. This A01 run is engineering evidence only because the full raw GPX has not yet been locally activated in the isolated environment.

Smoothed ascent249.8 m-86.2 m vs official reference

Smoothed descent189.1 mDerived from the sampled profile

Highest profile point234.3 mNear 30.8 km

Computed segments18423 analysis samples

Computed terrain partition

Distance by terrain class

Strong Downhill0.0 km

Downhill10.7 km

Flat16.7 km

Uphill11.9 km

Strong Uphill2.9 km

These classifications are deterministic outputs of processor course-intelligence-r1.02-v1; they are not yet approved for public metric claims or real-athlete prescriptions.

Versioned computed output

Terrain segments

SEG-001Flat

0.0 km → 9.6 kmAvg grade -0.16%

SEG-002Uphill

9.6 km → 11.8 kmAvg grade 1.31%

SEG-003Flat

11.8 km → 13.8 kmAvg grade 0.45%

SEG-004Uphill

13.8 km → 14.9 kmAvg grade 0.89%

SEG-005Flat

14.9 km → 16.3 kmAvg grade -0.18%

SEG-006Downhill

16.3 km → 17.6 kmAvg grade -1.18%

SEG-007Flat

17.6 km → 18.1 kmAvg grade 0.00%

SEG-008Uphill

18.1 km → 19.4 kmAvg grade 1.13%

SEG-009Strong Uphill

19.4 km → 21.0 kmAvg grade 2.19%

SEG-010Uphill

21.0 km → 23.2 kmAvg grade 1.26%

SEG-011Strong Uphill

23.2 km → 24.5 kmAvg grade 2.20%

SEG-012Uphill

24.5 km → 27.0 kmAvg grade 1.55%

SEG-013Flat

27.0 km → 28.0 kmAvg grade 0.75%

SEG-014Uphill

28.0 km → 30.6 kmAvg grade 1.17%

SEG-015Flat

30.6 km → 31.0 kmAvg grade -0.04%

SEG-016Downhill

31.0 km → 34.6 kmAvg grade -1.02%

SEG-017Flat

34.6 km → 36.4 kmAvg grade -0.61%

SEG-018Downhill

36.4 km → 42.2 kmAvg grade -1.52%

Audit & authorization

Immutable Analysis Run A01

Run ID: analysis-gr-athens-authentic-marathon-2026-c01-g01-a01-r1.02
Processor: course-intelligence-r1.02-v1
Input anchors: 25
Official gain reference: 336 m
Engineering demand use: Allowed
Public metric use: Blocked
Real-athlete training use: Blocked
Output SHA-256: a58577a676e37df677cc6715fdb3e8b4d5cbb29d71c4383ee2c98a83948f4000

R1.02 engine is valid, but the Athens run is based on the R1.01 25-point sampled elevation profile rather than locally preserved full raw GPX geometry.

Provenance & rights

Open geometry layer

The official GPX metadata attributes the route data to OpenStreetMap contributors. R1.02 keeps geometry provenance separate from derived analysis, and the analysis output preserves the input-profile hash and processor version.