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SF MARATHON 1ST HALF 2025

Rebecca Costa

Sunnyvale, CA

Bib: 15589 F 21

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
1.81M
10:45/mi
19:28
→ flat
5.34M
11:14/mi
59:07
↑ 80↓ 74
6.15M
10:43/mi
1:07:48
↑ 126
10.54M
11:53/mi
1:59:58
↑ 230↓ 361
11.05M
14:36/mi
2:07:25
↑ 172
Finish· 13.11 mi
11:16/mi
2:30:38
↑ 97↓ 114
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.15M
1:07:4811:01 /mi⚡ faster
2nd Half
1:22:5011:54 /mi+22.2%
Positive split — 22.2% slower in the second half
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Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
1.81M
19:2810:451.81 mi19:28
10:45
-
5.34M
59:0711:043.53 mi39:39
11:14
+0:29
6.15M
1:07:4811:010.81 mi8:41
10:43
-0:31
10.54M
1:59:5811:234.39 mi52:10
11:53
+1:10
11.05M
2:07:2511:320.51 mi7:27
14:36
+2:43
Finish(13.11 mi)
2:30:3811:292.06 mi23:13
11:16
-3:20
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

10:43 /mi

Average Pace

11:29 /mi

Slowest Pace

14:36 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:23:11

95% of race

Time at Slower Pace

7:27

5% of race

Average Pace: 11:29 /mi

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Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF20-29Seg. OverallSeg. FemalesSeg. F20-29
1.81M1.81 mi5339207232253392072322
5.34M3.53 mi5310+292056+16316+653302075316
6.15M0.81 mi5054+2561926+130302+1437541272219
10.54M4.39 mi5160-1061995-69312-1052762077320
11.05M0.51 mi5039+1211930+65306+636621270207
Finish(13.11 mi)2.06 mi4868+1711859+71299+741761573256

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 75%
~flat
+4ft-3ft

Overall

5339

Females

2072

F20-24

323

1.81M→5.34M

1.8 - 5.3 mi

Top 75%
×4story building
+80ft-74ft

Overall

5330

Females

2075

F20-24

317

5.34M→6.15M

5.3 - 6.2 mi

Top 53%
×10story building
+126ft-4ft

Overall

3754

Females

1272

F20-24

220

6.15M→10.54M

6.2 - 10.5 mi

Top 74%
×21story building
+230ft-361ft

Overall

5276

Females

2077

F20-24

321

10.54M→11.05M

10.5 - 11.1 mi

Top 52%
×14story building
+172ft-0ft

Overall

3662

Females

1270

F20-24

208

11.05M→Finish

11.1 - 13.1 mi

Top 59%
×7story building
+97ft-114ft

Overall

4176

Females

1573

F20-24

256

Passing Analysis

Category:
▲Net Change
+0
0 passed by0* passed
SegmentMovementRank
Start → 1.81M-#5339
1.81M → 5.34M
231260*+29
#5339 → #5310
5.34M → 6.15M
1257+256
#5310 → #5054
6.15M → 10.54M
239133*-106
#5054 → #5160
10.54M → 11.05M
6127+121
#5160 → #5039
11.05M → Finish
21192*+171
#5039 → #4868
TOTALS
498969*+471
#5339 → #4868

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

Passing Visualized

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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

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