Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialMichael J Prindiville
#293 · 1:11:15 · M51 · Group U · INV
Wave start 8:19 AM (U-INV)
Athlete B
OfficialPhoebe S Markle
#291 · 1:15:12 · F42 · 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
Michael (U-INV) started at 8:19 AM; Phoebe (P-INV) started at 8:15 AM. That gave Phoebe a 4 minutes head start on Michael. On foot, Michael ran 1:11:15 and Phoebe ran 1:15:12 — Michael was 3:57 faster than Phoebe. Michael took official place 293rd (time-based 356th) and Phoebe took official place 291st (time-based 490th). Phoebe's head start was enough to flip the official order even though Michael was faster on foot. Biggest swing: Michael gained 1:04 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Phoebe S Markle (P-INV) started 4 min earlier than Michael (U-INV).
- Overall place Δ
- +2
- Actual time Δ
- -3:57
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 4 min (Phoebe earlier)
- Finish clock Δ
- +0:03
- Section place Δ
- +1
Δ = Michael − Phoebe. Negative means Michael is ahead/faster.
Race timeline
Computed- Phoebe (P-INV) started at 8:15 AM.
- Michael (U-INV) started at 8:19 AM, 4:00 later.
- Actual running time: Michael was 3:57 faster on foot than Phoebe.
- Finish clock: Phoebe crossed the line 0:03 ahead of Michael — Phoebe wins this head-to-head.
Δ (A − B): actual -3:57 · finish clock +0:03.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Michael | Phoebe | Δ |
|---|---|---|---|
| Start to Top of Stairs | 7:53 | 8:45 | -0:52 |
| Stairs to Windy Gap | 5:46 | 6:36 | -0:50 |
| Windy Gap to Muir Woods | 5:47 | 6:14 | -0:27 |
| Muir Woods to Cardiac | 27:48 | 28:52 | -1:04 |
| Cardiac to White Gate | 14:42 | 15:03 | -0:21 |
| White Gate to The Stile | 7:21 | 7:39 | -0:18 |
| The Stile to Finish | 1:58 | 2:03 | -0:05 |
Δ negative = Michael ran the segment faster.