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SF MARATHON 1ST HALF 2025

Brenna Chen

San Francisco, CA

Bib: 14362 F 24

0:00
0:00
/ mi
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Overall
#0 / 7100
Gender (Female)
#0 / 3107
F20-29
#0 / 410
Race Day Weather
56°/46°F
light rain

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
10 ft elev
1.81M
10:20/mi
18:43
→ flat
12 ft elev
5.34M
10:31/mi
55:51
↑ 80↓ 74
19 ft elev
6.15M
11:32/mi
1:05:11
↑ 1262.8%
149 ft elev
10.54M
11:18/mi
1:54:47
↑ 230↓ 3610.6%
20 ft elev
11.05M
20:49/mi
2:05:24
↑ 1726.4%
213 ft elev
Finish· 13.11 mi
11:31/mi
2:29:06
↑ 97↓ 1140.2%
205 ft elev
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.15M
1:05:1110:36 /mi⚡ faster
2nd Half
1:23:5512:03 /mi+28.7%
Positive split — 28.7% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
1.81M
1.81 mi07:02:2018:4310:2018:43
10:20
-
5.34M
5.34 mi07:39:2855:5110:2837:08
10:31
+0:11
6.15M
6.15 mi07:48:481:05:1110:369:20
11:32
+1:01
10.54M
10.54 mi08:38:241:54:4710:5349:36
11:18
-0:14
11.05M
11.05 mi08:49:012:05:2411:2110:37
20:49
+9:31
Finish
13.11 mi09:12:432:29:0611:2223:42
11:31
-9:18

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

10:20 /mi

Average Pace

11:22 /mi

Slowest Pace

20:49 /mi

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Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:18:29

93% of race

Time at Slower Pace

10:37

7% of race

Average Pace: 11:22 /mi

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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.

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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
1.81M
1.81 mi07:02:2018:4310:2018:43
10:20
#4619
5.34M
5.34 mi07:39:2855:5110:2837:08
10:31
#4357
6.15M
6.15 mi07:48:481:05:1110:369:20
11:32
#4402
10.54M
10.54 mi08:38:241:54:4710:5349:36
11:18
#4500
11.05M
11.05 mi08:49:012:05:2411:2110:37
20:49
#4814
Finish
13.11 mi09:12:432:29:0611:2223:42
11:31
#4694
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF20-29Seg. OverallSeg. FemalesSeg. F20-29
1.81M1.81 mi1.81 mi4619170026146191700261
5.34M5.34 mi3.53 mi4357+2621564+136248+1342821516244
6.15M6.15 mi0.81 mi4402-451580-16253-547891778284
10.54M10.54 mi4.39 mi4500-981636-56263-1046431739274
11.05M11.05 mi0.51 mi4814-3141803-167289-2667962942397
Finish13.11 mi2.06 mi4694+1201767+3628944331708280

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 65%
~flat
+4ft-3ft

Overall

4619

Females

1700

F20-24

262

1.81M→5.34M

1.8 - 5.3 mi

Top 60%
×4story building
+80ft-74ft

Overall

4282

Females

1516

F20-24

245

5.34M→6.15M

5.3 - 6.2 mi

Top 67%
×10story building
+126ft-4ft

Overall

4789

Females

1778

F20-24

285

6.15M→10.54M

6.2 - 10.5 mi

Top 65%
×21story building
+230ft-361ft

Overall

4643

Females

1739

F20-24

275

10.54M→11.05M

10.5 - 11.1 mi

Top 96%
×14story building
+172ft-0ft

Overall

6796

Females

2942

F20-24

398

11.05M→Finish

11.1 - 13.1 mi

Top 62%
×7story building
+97ft-114ft

Overall

4433

Females

1708

F20-24

280

Passing Analysis

Category:
Athletes Passed
780*
Passed By
855
Net Change
-75
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 1.81M----#4619
1.81M → 5.34M402*140+262#4619#4357
5.34M → 6.15M57102-45#4357#4402
6.15M → 10.54M167*265-98#4402#4500
10.54M → 11.05M0314-314#4500#4814
11.05M → Finish154*34+120#4814#4694
TOTALS780*855-75

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

Passing Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events