Eric Herzfeld
Bib: 21037•M•Age: 33
San Francisco, CA
⏱️ Race Timeline
The Course
Claim it — unlock a deeper AI report on this race, free
A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.
Checkpoint Splits
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment Time | Segment Pace | Diff |
|---|---|---|---|---|---|---|---|
1.2M | 1.20 mi | 08:45:46 | 11:28 | 9:33 | 11:28 | 9:33 | - |
4.9M | 4.90 mi | 09:18:25 | 44:07 | 9:00 | 32:39 | 8:49 | -0:44 |
11.9M | 11.90 mi | 10:22:44 | 1:48:26 | 9:07 | 1:04:19 | 9:11 | +0:22 |
Finish | 13.11 mi | 10:33:37 | 1:59:19 | 9:06 | 10:53 | 9:00 | -0:11 |
Checkpoints & Pacing
📈Pace Line
Pace Progression
Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.
Fastest Pace
8:49 /mi
Average Pace
9:06 /mi
Slowest Pace
9:33 /mi
📊Segments
Segment Time Comparison
Time at Faster Pace
1:47:51
90% of race
Time at Steady Pace
11:28
10% of race
Time at Slower Pace
0:00
0% of race
Average Pace: 9:06 /mi
🎨Heatmap
Pace Heatmap
Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.
Click or hover over segments to see details
✨Sparklines
Checkpoint Splits with Pace Trends
Overall Pace Trend
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment | Pace | Trend | Rank |
|---|---|---|---|---|---|---|---|---|
1.2M | 1.20 mi | 08:45:46 | 11:28 | 9:33 | 11:28 | 9:33 | #1159 | |
4.9M | 4.90 mi | 09:18:25 | 44:07 | 9:00 | 32:39 | 8:49 | #1324 | |
11.9M | 11.90 mi | 10:22:44 | 1:48:26 | 9:07 | 1:04:19 | 9:11 | #1234 | |
Finish | 13.11 mi | 10:33:37 | 1:59:19 | 9:06 | 10:53 | 9:00 | #1184 |
Checkpoint and Segment Rankings
| Checkpoint | Distance | Seg. Dist | Overall | Males | M30-34 | Seg. Overall | Seg. Males | Seg. M30-34 |
|---|---|---|---|---|---|---|---|---|
| 1.2M | 1.20 mi | 1.20 mi | 1159 | 824 | 197 | 1159(Top 32%) | 824(Top 42%) | 197(Top 47%) |
| 4.9M | 4.90 mi | 3.70 mi | 1324-165 | 937-113 | 235-38 | 1379(Top 38%) | 959(Top 49%) | 242(Top 58%) |
| 11.9M | 11.90 mi | 7.00 mi | 1234+90 | 867+70 | 217+18 | 1209(Top 34%) | 852(Top 44%) | 207(Top 49%) |
| Finish | 13.11 mi | 1.21 mi | 1184+50 | 842+25 | 212+5 | 891(Top 25%) | 654(Top 34%) | 168(Top 40%) |
Segment Performance Analysis
Start → 1.2M
0.0 - 1.2 mi
Overall
1159
Males
824
M30-34
198
1.2M→4.9M
1.2 - 4.9 mi
Overall
1379
Males
959
M30-34
243
4.9M→11.9M
4.9 - 11.9 mi
Overall
1209
Males
852
M30-34
208
11.9M→Finish
11.9 - 13.1 mi
Overall
891
Males
654
M30-34
168
Passing Analysis
| Segment | Athletes Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 1.2M | - | - | - | - | #1159 |
| 1.2M → 4.9M | 60* | 225 | -165 | #1159 | #1324 |
| 4.9M → 11.9M | 141* | 51 | +90 | #1324 | #1234 |
| 11.9M → Finish | 52* | 2 | +50 | #1234 | #1184 |
| TOTALS | 253* | 278 | -25 |
* Includes athletes who did not complete a segment (DNF/DNQ).
Passing Visuals
🔄Passing Circle
🌊Position Flow
🏃Race Lanes
Upload your GPX file
Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps
.gpx files up to 10MB
Export Track Data
Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.
Questions or issues regarding timing data?
If you notice any discrepancies in your timing data or have questions about your results, our support team can help.
Contact Race SupportQuick Links
Find another athlete or browse the full results
Official Timing Data
Enhanced athlete results built from official timing data.
Race managed by
The San Francisco Marathon
