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BOSTON MARATHON 2025

Ann Kim

NJ

Bib: 22587 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 45%
Masters (Masters Women)
#0 / 6759
Top 32%
Division (F55-59)
#0 / 994
Top 13%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Mile 2
Mile 4
Mile 8
Mile 10
Mile 14
Start
0:00
Race begins
5K· 3.11 mi
8:09/mi
25:20
↑ 97↓ 345
10K· 6.21 mi
8:07/mi
50:34
↑ 79↓ 138
15K· 9.32 mi
8:15/mi
1:16:11
↑ 67↓ 78
20K· 12.43 mi
8:26/mi
1:42:24
↑ 106↓ 86
Half· 13.11 mi
8:11/mi
1:47:59
↑ 19↓ 37
25K· 15.53 mi
8:32/mi
2:08:41
↑ 66↓ 88
30K· 18.64 mi
8:39/mi
2:35:34
↑ 181↓ 148
20M
8:48/mi
2:47:32
↑ 64↓ 50
21M
9:13/mi
2:56:45
↑ 106↓ 24
35K· 21.75 mi
8:31/mi
3:03:07
↑ 17↓ 86
23M
8:32/mi
3:13:48
↑ 23↓ 63
24M
8:30/mi
3:22:18
↓ 82
40K· 24.85 mi
8:31/mi
3:29:35
↓ 20
25.2M
9:17/mi
3:32:47
↑ 13↓ 16
Finish· 26.22 mi
8:17/mi
3:41:13
↑ 22↓ 21
Course Elevation
890ft
Total climb
462ft
Range
7 to 469 ft
1,342ft
Total descent
About the height of two redwood trees

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The Course

Half Splits

1st Half· via Half
1:47:598:14 /mi⚡ faster
2nd Half
1:53:148:38 /mi+4.9%
Positive split — 4.9% slower in the second half
AI Race Performance Report

Ann's race, broken down like a coach

The full Race Story, performance analysis, segment & passing breakdowns, and where the race turned. Free to unlock — for anyone.

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Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
25:208:093.11 mi25:20
8:09
-
10K
50:348:083.10 mi25:14
8:07
-0:02
15K
1:16:118:103.11 mi25:37
8:15
+0:08
20K
1:42:248:143.11 mi26:13
8:26
+0:11
Half(13.11 mi)
1:47:598:140.68 mi5:35
8:11
-0:15
25K
2:08:418:172.42 mi20:42
8:32
+0:21
30K
2:35:348:213.11 mi26:53
8:39
+0:07
20M
2:47:328:231.36 mi11:58
8:48
+0:09
21M
2:56:458:251.00 mi9:13
9:13
+0:25
35K
3:03:078:250.75 mi6:22
8:31
-0:42
23M
3:13:488:261.25 mi10:41
8:32
+0:01
24M
3:22:188:261.00 mi8:30
8:30
-0:02
40K
3:29:358:260.85 mi7:17
8:31
+0:01
25.2M
3:32:478:270.35 mi3:12
9:17
+0:46
Finish(26.22 mi)
3:41:138:271.02 mi8:26
8:17
-1:00
Trend:
Faster pace
Steady pace
Slower pace
More below

See the rest of Ann's race

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Checkpoints & Pacing

Pace Line

Fastest Pace

8:07 /mi

Average Pace

8:27 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

3:28:48

94% of race

Time at Steady Pace

12:25

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:26 /mi

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

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi17784620562051770561436143
10K3.10 mi17551+2336072+1336072+1331737359215921
15K3.11 mi17595-446075-36075-31770561436143
20K3.11 mi17609-146105-306105-301779962236223
Half(13.11 mi)0.68 mi17591+186088+176088+171721858835883
25K2.42 mi17500+916057+316057+311741060856085
30K3.11 mi17117+3835882+1755882+1751573253035303
20M1.36 mi16992+1255836+465836+461571754305430
21M1.00 mi16811+1815764+725764+721473950265026
35K0.75 mi16752+595744+205744+201556555555555
23M1.25 mi16513+2395642+1025642+1021355445604560
24M1.00 mi16408+1055615+275615+271453551205120
40K0.85 mi16287+1215565+505565+501359547614761
25.2M0.35 mi16238+495545+205545+201343447434743
Finish(26.22 mi)1.02 mi16176+625528+175528+171479553685368

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
469 ft222 ft
↑ 97ft↓ 345ft
248 ft

Overall

17705

Females

6143

F55-59

6143

5K→10K

3.1 - 6.2 mi

Top 61%
216 ft157 ft
↑ 79ft↓ 138ft
59 ft

Overall

17373

Females

5921

F55-59

5921

10K→15K

6.2 - 9.3 mi

Top 62%
157 ft146 ft
↑ 67ft↓ 78ft
34 ft

Overall

17705

Females

6143

F55-59

6143

15K→20K

9.3 - 12.4 mi

Top 63%
147 ft167 ft
↑ 106ft↓ 86ft
63 ft

Overall

17799

Females

6223

F55-59

6223

20K→Half

12.4 - 13.1 mi

Top 61%
165 ft147 ft
↑ 19ft↓ 37ft
30 ft

Overall

17218

Females

5883

F55-59

5883

Half→25K

13.1 - 15.5 mi

Top 61%
148 ft126 ft
↑ 66ft↓ 88ft
44 ft

Overall

17410

Females

6085

F55-59

6085

25K→30K

15.5 - 18.6 mi

Top 55%
106 ft139 ft
↑ 181ft↓ 148ft
109 ft

Overall

15732

Females

5303

F55-59

5303

30K→20M

18.6 - 20.0 mi

Top 55%
134 ft148 ft
↑ 64ft↓ 50ft
56 ft

Overall

15717

Females

5430

F55-59

5430

20M→21M

20.0 - 21.0 mi

Top 52%
147 ft230 ft
↑ 106ft↓ 24ft
97 ft

Overall

14739

Females

5026

F55-59

5026

21M→35K

21.0 - 21.8 mi

Top 55%
223 ft154 ft
↑ 17ft↓ 86ft
78 ft

Overall

15565

Females

5555

F55-59

5555

35K→23M

21.8 - 23.0 mi

Top 48%
158 ft119 ft
↑ 23ft↓ 63ft
63 ft

Overall

13554

Females

4560

F55-59

4560

23M→24M

23.0 - 24.0 mi

Top 51%
115 ft45 ft
↑ 12ft↓ 82ft
70 ft

Overall

14535

Females

5120

F55-59

5120

24M→40K

24.0 - 24.9 mi

Top 48%
31 ft17 ft
↑ 6ft↓ 20ft
15 ft

Overall

13595

Females

4761

F55-59

4761

40K→25.2M

24.9 - 25.2 mi

Top 47%
22 ft19 ft
↑ 13ft↓ 16ft
16 ft

Overall

13434

Females

4743

F55-59

4743

25.2M→Finish

25.2 - 26.2 mi

Top 52%
16 ft17 ft
↑ 22ft↓ 21ft
19 ft

Overall

14795

Females

5368

F55-59

5368

Passing Analysis

No position changes recorded for this athlete.

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing