San Francisco Marathon logo
SF MARATHON 1ST HALF 2023

Chen-Ning Lai

Sunnyvale, CA

Bib: 15061 F 30

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 6072
Gender (Female)
#0 / 2732
Division (F30-34)
#0 / 557
Race Day Weather
60°/50°F
overcast clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
1.40M
10:02/mi
14:03
→ flat
11 ft elev
2.13M
22:33/mi
30:31
→ flat
13 ft elev
6.43M
14:25/mi
1:32:32
↑ 274↓ 780.9%
213 ft elev
6.62M
-50:-5/mi
1:23:12
↑ 161.6%
239 ft elev
10.65M
12:48/mi
2:14:47
↑ 153↓ 3611.0%
48 ft elev
Finish· 13.11 mi
13:48/mi
2:48:43
↑ 244↓ 1141.0%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.62M
1:23:1212:34 /mi⚡ faster
2nd Half
1:25:3113:11 /mi+2.8%
Positive split — 2.8% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
1.40M
14:0310:021.40 mi14:03
10:02
-
2.13M
30:3114:200.73 mi16:28
22:33
+12:31
6.43M
1:32:3214:234.30 mi1:02:01
14:25
-8:08
6.62M
1:23:1212:340.19 mi
-50:-5
-64:30
10.65M
2:14:4712:394.03 mi51:35
12:48
+62:53
Finish(13.11 mi)
2:48:4312:522.46 mi33:56
13:48
+1:00
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

-51:-5 /mi

Average Pace

12:52 /mi

Slowest Pace

22:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:48:43

100% of race

Time at Steady Pace

0:00

0% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 12:52 /mi

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

Heatmap

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF30-34Seg. OverallSeg. FemalesSeg. F30-34
1.40M1.40 mi1.40 mi4064157733240641577332
2.13M2.13 mi0.73 mi4681-6171903-326391-5952152207454
6.43M6.43 mi4.30 mi5016-3352079-176428-3751432165450
6.62M6.62 mi0.19 mi4877+1392004+75416+12---
10.65M10.65 mi4.03 mi5109-2322146-142441-2553992345481
Finish13.11 mi2.46 mi5294-1852266-120462-2156522489518

Segment Performance Analysis

Start → 1.40M

0.0 - 1.4 mi

Top 67%
~flat
+3ft-2ft

Overall

4064

Females

1577

F30-34

333

1.40M→2.13M

1.4 - 2.1 mi

Top 86%
~flat
+3ft-1ft

Overall

5215

Females

2207

F30-34

454

2.13M→6.43M

2.1 - 6.4 mi

Top 85%
×17story building
+274ft-78ft

Overall

5143

Females

2165

F30-34

450

6.43M→6.62M

6.4 - 6.6 mi

×1story
+16ft-0ft

Overall

-

Females

-

F30-34

-

6.62M→10.65M

6.6 - 10.7 mi

Top 89%
×21story building
+153ft-361ft

Overall

5399

Females

2345

F30-34

482

10.65M→Finish

10.7 - 13.1 mi

Top 93%
×17story building
+244ft-114ft

Overall

5652

Females

2489

F30-34

518

Passing Analysis

Category:
Athletes Passed
335*
Passed By
1565
Net Change
-1230
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.40M----#4064
1.40M → 2.13M31648-617#4064#4681
2.13M → 6.43M109*444-335#4681#5016
6.43M → 6.62M1412+139#5016#4877
6.62M → 10.65M34*266-232#4877#5109
10.65M → Finish20*205-185#5109#5294
TOTALS335*1565-1230

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

Passing Charts

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

Public Race Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events