Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialPhelps Wood
#364 · 1:16:20 · M57 · Group Q · INV
Wave start 8:16 AM (Q-INV)
Athlete B
OfficialSteven H Larson
#365 · 1:11:21 · M45 · Group W · INV
Wave start 8:21 AM (W-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
Phelps (Q-INV) started at 8:16 AM; Steven (W-INV) started at 8:21 AM. That gave Phelps a 5 minutes head start on Steven. On foot, Phelps ran 1:16:20 and Steven ran 1:11:21 — Steven was 4:59 faster than Phelps. Phelps took official place 364th (time-based 531st) and Steven took official place 365th (time-based 364th). Phelps's head start was enough to flip the official order even though Steven was faster on foot. Biggest swing: Steven gained 2:21 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Phelps Wood (Q-INV) started 5 min earlier than Steven (W-INV).
- Overall place Δ
- -1
- Actual time Δ
- +4:59
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 5 min (Phelps earlier)
- Finish clock Δ
- -0:01
- Section place Δ
- +22
Δ = Phelps − Steven. Negative means Phelps is ahead/faster.
Race timeline
Computed- Phelps (Q-INV) started at 8:16 AM.
- Steven (W-INV) started at 8:21 AM, 5:00 later.
- Actual running time: Steven was 4:59 faster on foot than Phelps.
- Finish clock: Phelps crossed the line 0:01 ahead of Steven — Phelps wins this head-to-head.
Δ (A − B): actual +4:59 · finish clock -0:01.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Phelps | Steven | Δ |
|---|---|---|---|
| Start to Top of Stairs | 8:55 | 7:55 | +1:00 |
| Stairs to Windy Gap | 6:43 | 6:32 | +0:11 |
| Windy Gap to Muir Woods | 6:11 | 5:58 | +0:13 |
| Muir Woods to Cardiac | 29:31 | 27:10 | +2:21 |
| Cardiac to White Gate | 15:19 | 14:27 | +0:52 |
| White Gate to The Stile | 7:31 | 7:11 | +0:20 |
| The Stile to Finish | 2:10 | 2:08 | +0:02 |
Δ negative = Phelps ran the segment faster.