Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialMary Etta Boitano Blanchard
#175 · 1:22:41 · F63 · Group B · INV
Wave start 8:03 AM (B-INV)
Athlete B
OfficialJennifer J Foster
#172 · 1:14:31 · F52 · Group K · INV
Wave start 8:11 AM (K-INV)
Comparison report
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The PDF includes the interpretation, deltas, race timeline, position-through-the-course chart, and segment-by-segment splits shown below.
Interpretation
Mary Etta (B-INV) started at 8:03 AM; Jennifer (K-INV) started at 8:11 AM. That gave Mary Etta a 8 minutes head start on Jennifer. On foot, Mary Etta ran 1:22:41 and Jennifer ran 1:14:31 — Jennifer was 8:10 faster than Mary Etta. Mary Etta took official place 175th (time-based 725th) and Jennifer took official place 172nd (time-based 462nd). Jennifer was faster on foot and finished ahead on the official clock too. Biggest swing: Jennifer gained 3:36 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Mary Etta Boitano Blanchard (B-INV) started 8 min earlier than Jennifer (K-INV).
- Overall place Δ
- +3
- Actual time Δ
- +8:10
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 8 min (Mary Etta earlier)
- Finish clock Δ
- +0:10
- Section place Δ
- -2
Δ = Mary Etta − Jennifer. Negative means Mary Etta is ahead/faster.
Race timeline
Computed- Mary Etta (B-INV) started at 8:03 AM.
- Jennifer (K-INV) started at 8:11 AM, 8:00 later.
- Actual running time: Jennifer was 8:10 faster on foot than Mary Etta.
- Finish clock: Jennifer crossed the line 0:10 ahead of Mary Etta — Jennifer wins this head-to-head.
Δ (A − B): actual +8:10 · finish clock +0:10.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Mary Etta | Jennifer | Δ |
|---|---|---|---|
| Start to Top of Stairs | 10:19 | 9:12 | +1:07 |
| Stairs to Windy Gap | 7:22 | 6:27 | +0:55 |
| Windy Gap to Muir Woods | 6:58 | 6:22 | +0:36 |
| Muir Woods to Cardiac | 30:54 | 27:18 | +3:36 |
| Cardiac to White Gate | 16:30 | 15:42 | +0:48 |
| White Gate to The Stile | 8:03 | 7:22 | +0:41 |
| The Stile to Finish | 2:35 | 2:08 | +0:27 |
Δ negative = Mary Etta ran the segment faster.