Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialRowan E Prindiville
#177 · 1:01:51 · M18 · Group Z · INV
Wave start 8:24 AM (Z-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
Rowan (Z-INV) started at 8:24 AM; Mary Etta (B-INV) started at 8:03 AM. That gave Mary Etta a 21 minutes head start on Rowan. On foot, Rowan ran 1:01:51 and Mary Etta ran 1:22:41 — Rowan was 20:50 faster than Mary Etta. Rowan took official place 177th (time-based 105th) and Mary Etta took official place 175th (time-based 725th). Mary Etta's head start was enough to flip the official order even though Rowan was faster on foot. Biggest swing: Rowan gained 6:06 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Mary Etta Boitano Blanchard (B-INV) started 21 min earlier than Rowan (Z-INV).
- Overall place Δ
- +2
- Actual time Δ
- -20:50
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 21 min (Mary Etta earlier)
- Finish clock Δ
- +0:10
- Section place Δ
- +18
Δ = Rowan − Mary Etta. Negative means Rowan is ahead/faster.
Race timeline
Computed- Mary Etta (B-INV) started at 8:03 AM.
- Rowan (Z-INV) started at 8:24 AM, 21:00 later.
- Actual running time: Rowan was 20:50 faster on foot than Mary Etta.
- Finish clock: Mary Etta crossed the line 0:10 ahead of Rowan — Mary Etta wins this head-to-head.
Δ (A − B): actual -20:50 · finish clock +0:10.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Rowan | Mary Etta | Δ |
|---|---|---|---|
| Start to Top of Stairs | 6:27 | 10:19 | -3:52 |
| Stairs to Windy Gap | 5:08 | 7:22 | -2:14 |
| Windy Gap to Muir Woods | 5:05 | 6:58 | -1:53 |
| Muir Woods to Cardiac | 24:48 | 30:54 | -6:06 |
| Cardiac to White Gate | 12:33 | 16:30 | -3:57 |
| White Gate to The Stile | 6:17 | 8:03 | -1:46 |
| The Stile to Finish | 1:33 | 2:35 | -1:02 |
Δ negative = Rowan ran the segment faster.