Serena Hong
San Francisco, CA
Bib: 21818 F 30
⏱️ Race Timeline
The Course
Claim it for a free AI report on this race
A one-of-a-kind AI Race Performance Report that reads your race like a coach. A plain-English story of how you raced, where you surged and faded, and what it all means. Emailed to you, free.
Checkpoint Splits
| Checkpoint | Distance | Time of Day | Time | Avg Pace | Segment Time | Segment Pace | Diff |
|---|---|---|---|---|---|---|---|
1.2M | 1.20 mi | 08:43:40 | 10:52 | 9:03 | 10:52 | 9:03 | - |
4.9M | 4.90 mi | 09:14:27 | 41:39 | 8:30 | 30:47 | 8:19 | -0:44 |
11.9M | 11.90 mi | 10:17:19 | 1:44:31 | 8:47 | 1:02:52 | 8:59 | +0:40 |
Finish | 13.11 mi | 10:30:18 | 1:57:30 | 8:58 | 12:59 | 10:44 | +1:45 |
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
8:19 /mi
Average Pace
8:58 /mi
Slowest Pace
10:44 /mi
📊Segments
Segment Time Comparison
Time at Faster Pace
30:47
26% of race
Time at Steady Pace
1:13:44
63% of race
Time at Slower Pace
12:59
11% of race
Average Pace: 8:58 /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 | 08:43:40 | 10:52 | 9:03 | 10:52 | 9:03 | #795 | |
4.9M | 4.90 mi | 09:14:27 | 41:39 | 8:30 | 30:47 | 8:19 | #884 | |
11.9M | 11.90 mi | 10:17:19 | 1:44:31 | 8:47 | 1:02:52 | 8:59 | #984 | |
Finish | 13.11 mi | 10:30:18 | 1:57:30 | 8:58 | 12:59 | 10:44 | #1077 |
Checkpoint and Segment Rankings
| Checkpoint | Distance | Seg. Dist | Overall | Females | F30-34 | Seg. Overall | Seg. Females | Seg. F30-34 |
|---|---|---|---|---|---|---|---|---|
| 1.2M | 1.20 mi | 1.20 mi | 795 | 197 | 50 | 795(Top 22%) | 197(Top 12%) | 50(Top 14%) |
| 4.9M | 4.90 mi | 3.70 mi | 884-89 | 222-25 | 54-4 | 939(Top 26%) | 241(Top 15%) | 58(Top 17%) |
| 11.9M | 11.90 mi | 7.00 mi | 984-100 | 259-37 | 64-10 | 1054(Top 29%) | 292(Top 18%) | 67(Top 19%) |
| Finish | 13.11 mi | 1.21 mi | 1077-93 | 295-36 | 70-6 | 1957(Top 54%) | 736(Top 45%) | 165(Top 47%) |
Segment Performance Analysis
Start → 1.2M
0.0 - 1.2 mi
Overall
795
Females
197
F30-34
50
1.2M→4.9M
1.2 - 4.9 mi
Overall
939
Females
241
F30-34
58
4.9M→11.9M
4.9 - 11.9 mi
Overall
1054
Females
292
F30-34
67
11.9M→Finish
11.9 - 13.1 mi
Overall
1957
Females
736
F30-34
165
Passing Analysis
| Segment | Athletes Passed | Passed By | Net Change | Start Rank | End Rank |
|---|---|---|---|---|---|
| Start → 1.2M | - | - | - | - | #795 |
| 1.2M → 4.9M | 46* | 135 | -89 | #795 | #884 |
| 4.9M → 11.9M | 38* | 138 | -100 | #884 | #984 |
| 11.9M → Finish | 4* | 97 | -93 | #984 | #1077 |
| TOTALS | 88* | 370 | -282 |
* 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
