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
OfficialDavid W Wood
#178 · 1:10:54 · M58 · Group P · INV
Wave start 8:15 AM (P-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; David (P-INV) started at 8:15 AM. That gave Mary Etta a 12 minutes head start on David. On foot, Mary Etta ran 1:22:41 and David ran 1:10:54 — David was 11:47 faster than Mary Etta. Mary Etta took official place 175th (time-based 725th) and David took official place 178th (time-based 352nd). Mary Etta's head start was enough to flip the official order even though David was faster on foot. Biggest swing: David gained 2:50 from Cardiac to White Gate.
Deltas
ComputedWave start
Mary Etta Boitano Blanchard (B-INV) started 12 min earlier than David (P-INV).
- Overall place Δ
- -3
- Actual time Δ
- +11:47
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 12 min (Mary Etta earlier)
- Finish clock Δ
- -0:13
- Section place Δ
- -9
Δ = Mary Etta − David. Negative means Mary Etta is ahead/faster.
Race timeline
Computed- Mary Etta (B-INV) started at 8:03 AM.
- David (P-INV) started at 8:15 AM, 12:00 later.
- Actual running time: David was 11:47 faster on foot than Mary Etta.
- Finish clock: Mary Etta crossed the line 0:13 ahead of David — Mary Etta wins this head-to-head.
Δ (A − B): actual +11:47 · finish clock -0:13.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Mary Etta | David | Δ |
|---|---|---|---|
| Start to Top of Stairs | 10:19 | 7:58 | +2:21 |
| Stairs to Windy Gap | 7:22 | 6:21 | +1:01 |
| Windy Gap to Muir Woods | 6:58 | 5:21 | +1:37 |
| Muir Woods to Cardiac | 30:54 | 28:44 | +2:10 |
| Cardiac to White Gate | 16:30 | 13:40 | +2:50 |
| White Gate to The Stile | 8:03 | 6:48 | +1:15 |
| The Stile to Finish | 2:35 | 2:02 | +0:33 |
Δ negative = Mary Etta ran the segment faster.