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
OfficialEmily Feng
#294 · 1:15:16 · F24 · 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; Emily (P-INV) started at 8:15 AM. That gave Emily a 4 minutes head start on Michael. On foot, Michael ran 1:11:15 and Emily ran 1:15:16 — Michael was 4:01 faster than Emily. Michael took official place 293rd (time-based 356th) and Emily took official place 294th (time-based 494th). Michael was faster on foot and finished ahead on the official clock too. Biggest swing: Michael gained 0:50 from Cardiac to White Gate.
Deltas
ComputedWave start
Emily Feng (P-INV) started 4 min earlier than Michael (U-INV).
- Overall place Δ
- -1
- Actual time Δ
- -4:01
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 4 min (Emily earlier)
- Finish clock Δ
- -0:01
- Section place Δ
- -1
Δ = Michael − Emily. Negative means Michael is ahead/faster.
Race timeline
Computed- Emily (P-INV) started at 8:15 AM.
- Michael (U-INV) started at 8:19 AM, 4:00 later.
- Actual running time: Michael was 4:01 faster on foot than Emily.
- Finish clock: Michael crossed the line 0:01 ahead of Emily — Michael wins this head-to-head.
Δ (A − B): actual -4:01 · finish clock -0:01.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Michael | Emily | Δ |
|---|---|---|---|
| Start to Top of Stairs | 7:53 | 9:07 | -1:14 |
| Stairs to Windy Gap | 5:46 | 6:26 | -0:40 |
| Windy Gap to Muir Woods | 5:47 | 6:09 | -0:22 |
| Muir Woods to Cardiac | 27:48 | 28:23 | -0:35 |
| Cardiac to White Gate | 14:42 | 15:32 | -0:50 |
| White Gate to The Stile | 7:21 | 7:39 | -0:18 |
| The Stile to Finish | 1:58 | 2:00 | -0:02 |
Δ negative = Michael ran the segment faster.