Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialDavid Leipsic
#516 · 1:31:14 · M61 · Group M · INV
Wave start 8:13 AM (M-INV)
Athlete B
OfficialEmma F Broderick
#518 · 1:01:21 · F33 · Group Q · DR
Wave start 8:43 AM (Q-DR)
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
David (M-INV) started at 8:13 AM; Emma (Q-DR) started at 8:43 AM. That gave David a 30 minutes head start on Emma because the Runner wave starts 27 minutes after the Invitational wave. On foot, David ran 1:31:14 and Emma ran 1:01:21 — Emma was 29:53 faster than David. David took official place 516th (time-based 931st) and Emma took official place 518th (time-based 91st). David's head start was enough to flip the official order even though Emma was faster on foot. Biggest swing: Emma gained 11:29 from Muir Woods to Cardiac.
Deltas
ComputedWave start
David Leipsic (M-INV) started 30 min earlier than Emma (Q-DR).
The Runner wave starts 27 min after the Invitational wave.
- Overall place Δ
- -2
- Actual time Δ
- +29:53
- Section gap Δ
- 27 min (David earlier)
- Wave start Δ
- 30 min (David earlier)
- Finish clock Δ
- -0:07
- Section place Δ
- —
Δ = David − Emma. Negative means David is ahead/faster.
Race timeline
Computed- David (M-INV) started at 8:13 AM.
- Emma (Q-DR) started at 8:43 AM, 30:00 later — the Invitational wave starts 27 min before the Runner wave.
- Actual running time: Emma was 29:53 faster on foot than David.
- Finish clock: David crossed the line 0:07 ahead of Emma — David wins this head-to-head.
Δ (A − B): actual +29:53 · finish clock -0:07.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | David | Emma | Δ |
|---|---|---|---|
| Start to Top of Stairs | 11:07 | 7:52 | +3:15 |
| Stairs to Windy Gap | 7:33 | 5:15 | +2:18 |
| Windy Gap to Muir Woods | 8:46 | 5:42 | +3:04 |
| Muir Woods to Cardiac | 33:24 | 21:55 | +11:29 |
| Cardiac to White Gate | 18:20 | 12:43 | +5:37 |
| White Gate to The Stile | 9:23 | 6:09 | +3:14 |
| The Stile to Finish | 2:41 | 1:45 | +0:56 |
Δ negative = David ran the segment faster.