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SF MARATHON 1ST HALF 2025

Monique Irby

Mountain House, CA

Bib: 11846 F 39

0:00
0:00
/ mi
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Overall
#0 / 7100
Gender (Female)
#0 / 3107
Division (F35-39)
#0 / 389
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
11:22/mi
20:34
→ flat
5.34M
12:45/mi
1:05:33
↑ 80↓ 74
6.15M
13:44/mi
1:16:40
↑ 126
10.54M
13:27/mi
2:15:43
↑ 230↓ 361
11.05M
20:02/mi
2:25:56
↑ 172
Finish· 13.11 mi
14:59/mi
2:56:47
↑ 97↓ 114
Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent

The Course

Half Splits

1st Half· via 6.15M
1:16:4012:28 /mi⚡ faster
2nd Half
1:40:0714:23 /mi+30.6%
Positive split — 30.6% 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
20:3411:221.81 mi20:34
11:22
-
5.34M
1:05:3312:173.53 mi44:59
12:45
+1:23
6.15M
1:16:4012:280.81 mi11:07
13:44
+0:59
10.54M
2:15:4312:534.39 mi59:03
13:27
-0:17
11.05M
2:25:5613:120.51 mi10:13
20:02
+6:35
Finish(13.11 mi)
2:56:4713:292.06 mi30:51
14:59
-5:03
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

11:22 /mi

Average Pace

13:29 /mi

Slowest Pace

20:02 /mi

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Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

20:34

12% of race

Time at Steady Pace

2:26:00

83% of race

Time at Slower Pace

10:13

6% of race

Average Pace: 13:29 /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. DistOverallFemalesF35-39Seg. OverallSeg. FemalesSeg. F35-39
1.81M1.81 mi6099250630860992506308
5.34M3.53 mi6411-3122685-179334-2665322747344
6.15M0.81 mi6416-52684+1336-264202689335
10.54M4.39 mi6442-262710-2633664052712329
11.05M0.51 mi6463-212722-1233666242840350
Finish(13.11 mi)2.06 mi6504-412748-26338-265932861351

Segment Performance Analysis

Start → 1.81M

0.0 - 1.8 mi

Top 86%
~flat
+4ft-3ft

Overall

6099

Females

2506

F35-39

308

1.81M→5.34M

1.8 - 5.3 mi

Top 92%
×4story building
+80ft-74ft

Overall

6532

Females

2747

F35-39

344

5.34M→6.15M

5.3 - 6.2 mi

Top 90%
×10story building
+126ft-4ft

Overall

6420

Females

2689

F35-39

335

6.15M→10.54M

6.2 - 10.5 mi

Top 90%
×21story building
+230ft-361ft

Overall

6405

Females

2712

F35-39

329

10.54M→11.05M

10.5 - 11.1 mi

Top 93%
×14story building
+172ft-0ft

Overall

6624

Females

2840

F35-39

350

11.05M→Finish

11.1 - 13.1 mi

Top 93%
×7story building
+97ft-114ft

Overall

6593

Females

2861

F35-39

351

Passing Analysis

Category:
▼Net Change
0
0 passed by0* passed
SegmentMovementRank
Start → 1.81M-#6099
1.81M → 5.34M
37765*-312
#6099 → #6411
5.34M → 6.15M
3227-5
#6411 → #6416
6.15M → 10.54M
10680*-26
#6416 → #6442
10.54M → 11.05M
298-21
#6442 → #6463
11.05M → Finish
7837*-41
#6463 → #6504
TOTALS
622217*-405
#6099 → #6504

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

Passing Visualized

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

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