Shannon Chang

Bib: 18154FAge: 33

San Francisco, CA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 6575
Gender (Female)
#0 / 2930
Division (F30-34)
#0 / 651
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10277 ft
×22story building
774 ft climb · 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
10:56/mi
21:53
→ flat
4M
12:57/mi
47:46
6769
6M
13:06/mi
1:13:59
1231.1%
8M
14:53/mi
1:43:45
166531.1%
9.6M
9:33/mi
1:59:02
681931.5%
10M
23:22/mi
2:08:22
241.1%
10.5M
6:00/mi
2:11:22
732.7%
12M
18:05/mi
2:38:30
2803.2%
Finish· 13.11 mi
12:59/mi
2:52:54
14891.3%

The Course

Is this your race?

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.

Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time1:13:59
Pace12:20 /mi
2nd Half
Distance7.11 mi
Time1:38:55
Pace13:55 /mi
📊Positive Split: 33.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:11:3321:5310:5621:53
10:56
-
4M
4.00 mi07:37:2647:4611:5725:53
12:57
+2:01
6M
6.00 mi08:03:391:13:5912:2026:13
13:06
+0:09
8M
8.00 mi08:33:251:43:4512:5829:46
14:53
+1:47
9.6M
9.60 mi08:48:421:59:0212:2415:17
9:33
-5:20
10M
10.00 mi08:58:022:08:2212:509:20
23:22
+13:49
10.5M
10.50 mi09:01:022:11:2212:313:00
6:00
-17:22
12M
12.00 mi09:28:102:38:3013:1327:08
18:05
+12:05
Finish
13.11 mi09:42:342:52:5413:1114:24
12:59
-5:06

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

6:00 /mi

Average Pace

13:11 /mi

Slowest Pace

23:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

18:17

11% of race

Time at Steady Pace

1:58:09

68% of race

Time at Slower Pace

36:28

21% of race

Average Pace: 13:11 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨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.

Loading...
0mi3.3mi6.6mi9.8mi13.1mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
2M
2.00 mi07:11:3321:5310:5621:53
10:56
#4612
4M
4.00 mi07:37:2647:4611:5725:53
12:57
#5618
6M
6.00 mi08:03:391:13:5912:2026:13
13:06
#5763
8M
8.00 mi08:33:251:43:4512:5829:46
14:53
#6027
9.6M
9.60 mi08:48:421:59:0212:2415:17
9:33
#5758
10M
10.00 mi08:58:022:08:2212:509:20
23:22
#5723
10.5M
10.50 mi09:01:022:11:2212:313:00
6:00
#5709
12M
12.00 mi09:28:102:38:3013:1327:08
18:05
#5731
Finish
13.11 mi09:42:342:52:5413:1114:24
12:59
#5722
Faster pace
Steady pace
Slower pace
Featured Segment

Garmin Challenge

Top 78%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

12:20

Segment Time

13:42/mi

Pace

0.90 mi

Distance

Overall

5113

Women

2078

Division

491

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF30-34Seg. OverallSeg. FemalesSeg. F30-34
2M2.00 mi2.00 mi461217204015479(Top 83%)2323(Top 79%)529(Top 81%)
4M4.00 mi2.00 mi5618-10062311-591529-1286091(Top 93%)2607(Top 89%)593(Top 91%)
6M6.00 mi2.00 mi5763-1452388-77552-235928(Top 90%)2499(Top 85%)577(Top 89%)
8M8.00 mi2.00 mi6027-2642545-157596-446238(Top 95%)2689(Top 92%)615(Top 94%)
9.6M9.60 mi1.60 mi5758+2692389+156565+313443(Top 52%)1317(Top 45%)303(Top 47%)
10M10.00 mi0.40 mi5723+352374+15554+115116(Top 78%)2090(Top 71%)483(Top 74%)
10.5M10.50 mi0.50 mi5709+142368+6553+15380(Top 82%)2234(Top 76%)508(Top 78%)
12M12.00 mi1.50 mi5731-222385-17554-15479(Top 83%)2323(Top 79%)529(Top 81%)
Finish13.11 mi1.11 mi5722+92390-5553+15552(Top 84%)2375(Top 81%)543(Top 83%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 83%
~flat
+5ft-3ft

Overall

5479

Females

2323

F30-34

531

2M→4M

2.0 - 4.0 mi

Top 93%
×4story building
+67ft-69ft

Overall

6091

Females

2607

F30-34

596

4M→6M

4.0 - 6.0 mi

Top 90%
×9story building
+123ft-9ft

Overall

5928

Females

2499

F30-34

580

6M→8M

6.0 - 8.0 mi

Top 95%
×12story building
+166ft-53ft

Overall

6238

Females

2689

F30-34

617

8M→9.6M

8.0 - 9.6 mi

Top 52%
×13story building
+68ft-193ft

Overall

3443

Females

1317

F30-34

305

9.6M→10M

9.6 - 10.0 mi

Top 78%
×2story building
+0ft-24ft

Overall

5116

Females

2090

F30-34

485

10M→10.5M

10.0 - 10.5 mi

Top 82%
×6story building
+1ft-73ft

Overall

5380

Females

2234

F30-34

510

10.5M→12M

10.5 - 12.0 mi

Top 83%
×21story building
+280ft-26ft

Overall

5479

Females

2323

F30-34

531

12M→Finish

12.0 - 13.1 mi

Top 84%
×7story building
+14ft-89ft

Overall

5552

Females

2375

F30-34

543

Passing Analysis

Category:
Athletes Passed
538*
Passed By
1648
Net Change
-1110
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#4612
2M4M51011-1006#4612#5618
4M6M54*199-145#5618#5763
6M8M25*289-264#5763#6027
8M9.6M28112+269#6027#5758
9.6M10M6227+35#5758#5723
10M10.5M184+14#5723#5709
10.5M12M56*78-22#5709#5731
12MFinish37*28+9#5731#5722
TOTALS538*1648-1110

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

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 Support

Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events