Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialJohn P Cassidy
#517 · 1:23:17 · M46 · Group W · INV
Wave start 8:21 AM (W-INV)
Athlete B
OfficialDave Covey
#520 · 1:34:42 · M65 · Group J · INV
Wave start 8:10 AM (J-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
John (W-INV) started at 8:21 AM; Dave (J-INV) started at 8:10 AM. That gave Dave a 11 minutes head start on John. On foot, John ran 1:23:17 and Dave ran 1:34:42 — John was 11:25 faster than Dave. John took official place 517th (time-based 749th) and Dave took official place 520th (time-based 1001st). John was faster on foot and finished ahead on the official clock too. Biggest swing: John gained 2:29 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Dave Covey (J-INV) started 11 min earlier than John (W-INV).
- Overall place Δ
- -3
- Actual time Δ
- -11:25
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 11 min (Dave earlier)
- Finish clock Δ
- -0:25
- Section place Δ
- +26
Δ = John − Dave. Negative means John is ahead/faster.
Race timeline
Computed- Dave (J-INV) started at 8:10 AM.
- John (W-INV) started at 8:21 AM, 11:00 later.
- Actual running time: John was 11:25 faster on foot than Dave.
- Finish clock: John crossed the line 0:25 ahead of Dave — John wins this head-to-head.
Δ (A − B): actual -11:25 · finish clock -0:25.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | John | Dave | Δ |
|---|---|---|---|
| Start to Top of Stairs | 9:07 | 11:29 | -2:22 |
| Stairs to Windy Gap | 7:02 | 8:32 | -1:30 |
| Windy Gap to Muir Woods | 6:12 | 7:10 | -0:58 |
| Muir Woods to Cardiac | 33:58 | 36:27 | -2:29 |
| Cardiac to White Gate | 16:51 | 19:12 | -2:21 |
| White Gate to The Stile | 8:01 | 9:18 | -1:17 |
| The Stile to Finish | 2:06 | 2:34 | -0:28 |
Δ negative = John ran the segment faster.