Head-to-head
Pick two athletes to see how the race played out between them — by actual time, head start, and checkpoint.
Athlete A
OfficialJonnie A Alper
#1158 · 1:46:00 · M62 · Group L · DR
Wave start 8:39 AM (L-DR)
Athlete B
OfficialTom P Robinson
#1161 · 1:38:14 · M49 · Group V · DR
Wave start 8:47 AM (V-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
Jonnie (L-DR) started at 8:39 AM; Tom (V-DR) started at 8:47 AM. That gave Jonnie a 8 minutes head start on Tom. On foot, Jonnie ran 1:46:00 and Tom ran 1:38:14 — Tom was 7:46 faster than Jonnie. Jonnie took official place 1158th (time-based 1179th) and Tom took official place 1161st (time-based 1071st). Jonnie's head start was enough to flip the official order even though Tom was faster on foot. Biggest swing: Tom gained 3:07 from Muir Woods to Cardiac.
Deltas
ComputedWave start
Jonnie A Alper (L-DR) started 8 min earlier than Tom (V-DR).
- Overall place Δ
- -3
- Actual time Δ
- +7:46
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 8 min (Jonnie earlier)
- Finish clock Δ
- -0:14
- Section place Δ
- +6
Δ = Jonnie − Tom. Negative means Jonnie is ahead/faster.
Race timeline
Computed- Jonnie (L-DR) started at 8:39 AM.
- Tom (V-DR) started at 8:47 AM, 8:00 later.
- Actual running time: Tom was 7:46 faster on foot than Jonnie.
- Finish clock: Jonnie crossed the line 0:14 ahead of Tom — Jonnie wins this head-to-head.
Δ (A − B): actual +7:46 · finish clock -0:14.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | Jonnie | Tom | Δ |
|---|---|---|---|
| Start to Top of Stairs | 12:20 | 11:13 | +1:07 |
| Stairs to Windy Gap | 9:03 | 7:58 | +1:05 |
| Windy Gap to Muir Woods | 8:09 | 8:15 | -0:06 |
| Muir Woods to Cardiac | 40:51 | 37:44 | +3:07 |
| Cardiac to White Gate | 22:03 | 20:10 | +1:53 |
| White Gate to The Stile | 10:32 | 10:12 | +0:20 |
| The Stile to Finish | 3:02 | 2:42 | +0:20 |
Δ negative = Jonnie ran the segment faster.