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 A Greenblat
#1252 · 1:58:23 · M67 · Group G · DR
Wave start 8:35 AM (G-DR)
Athlete B
OfficialJerry Klein
#1248 · 1:43:05 · M39 · Group Y · DR
Wave start 8:50 AM (Y-DR)
Interpretation
David (G-DR) started at 8:35 AM; Jerry (Y-DR) started at 8:50 AM. That gave David a 15 minutes head start on Jerry. On foot, David ran 1:58:23 and Jerry ran 1:43:05 — Jerry was 15:18 faster than David. David took official place 1252nd (time-based 1281st) and Jerry took official place 1248th (time-based 1139th). Jerry was faster on foot and finished ahead on the official clock too. Biggest swing: Jerry gained 7:54 from Muir Woods to Cardiac.
Deltas
ComputedWave start
David A Greenblat (G-DR) started 15 min earlier than Jerry (Y-DR).
- Overall place Δ
- +4
- Actual time Δ
- +15:18
- Section gap Δ
- ±0 (same section)
- Wave start Δ
- 15 min (David earlier)
- Finish clock Δ
- +0:18
- Section place Δ
- -87
Δ = David − Jerry. Negative means David is ahead/faster.
Race timeline
Computed- David (G-DR) started at 8:35 AM.
- Jerry (Y-DR) started at 8:50 AM, 15:00 later.
- Actual running time: Jerry was 15:18 faster on foot than David.
- Finish clock: Jerry crossed the line 0:18 ahead of David — Jerry wins this head-to-head.
Δ (A − B): actual +15:18 · finish clock +0:18.
Position through the course
OfficialSegment-by-segment splits
Official| Segment | David | Jerry | Δ |
|---|---|---|---|
| Start to Top of Stairs | 11:44 | 10:56 | +0:48 |
| Stairs to Windy Gap | 9:29 | 8:47 | +0:42 |
| Windy Gap to Muir Woods | 9:07 | 11:09 | -2:02 |
| Muir Woods to Cardiac | 45:17 | 37:23 | +7:54 |
| Cardiac to White Gate | 25:24 | 21:42 | +3:42 |
| White Gate to The Stile | 13:33 | 10:53 | +2:40 |
| The Stile to Finish | 3:49 | 2:15 | +1:34 |
Δ negative = David ran the segment faster.