Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialRoy A Rivers
#170 · 1:19:28 · M69 · Group E · INV
Wave start 8:06 AM (E-INV)
Athlete B
OfficialMary Etta Boitano Blanchard
#175 · 1:22:41 · F63 · Group B · INV
Wave start 8:03 AM (B-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
Roy (E-INV) started at 8:06 AM; Mary Etta (B-INV) started at 8:03 AM. That gave Mary Etta a 3 minutes head start on Roy. On foot, Roy ran 1:19:28 and Mary Etta ran 1:22:41 — Roy was 3:13 faster than Mary Etta. Roy took official place 170th (time-based 631st) and Mary Etta took official place 175th (time-based 725th). Roy was faster on foot and finished ahead on the official clock too. Biggest swing: Roy gained 1:50 from Cardiac to White Gate.
Deltas
ComputedWave start
Mary Etta Boitano Blanchard (B-INV) started 3 min earlier than Roy (E-INV).
- Overall place Δ
- -5
- Actual time Δ
- -3:13
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 3 min (Mary Etta earlier)
- Finish clock Δ
- -0:13
- Section place Δ
- 0
Δ = Roy − Mary Etta. Negative means Roy is ahead/faster.
Race timeline
Computed- Mary Etta (B-INV) started at 8:03 AM.
- Roy (E-INV) started at 8:06 AM, 3:00 later.
- Actual running time: Roy was 3:13 faster on foot than Mary Etta.
- Finish clock: Roy crossed the line 0:13 ahead of Mary Etta — Roy wins this head-to-head.
Δ (A − B): actual -3:13 · finish clock -0:13.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Roy | Mary Etta | Δ |
|---|---|---|---|
| Start to Top of Stairs | 10:07 | 10:19 | -0:12 |
| Stairs to Windy Gap | 7:28 | 7:22 | +0:06 |
| Windy Gap to Muir Woods | 6:08 | 6:58 | -0:50 |
| Muir Woods to Cardiac | 31:45 | 30:54 | +0:51 |
| Cardiac to White Gate | 14:40 | 16:30 | -1:50 |
| White Gate to The Stile | 7:06 | 8:03 | -0:57 |
| The Stile to Finish | 2:14 | 2:35 | -0:21 |
Δ negative = Roy ran the segment faster.