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BOSTON MARATHON 2025

Esther Kim

Bib: 19384•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 36%
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:11
Rank: #17390
Start → 5K
25:11 | 8:06/mi
10K· 6.21 mi
49:49
Rank: #16656 (+734)
5K → 10K
24:38 | 7:56/mi
15K· 9.32 mi
1:14:22
Rank: #16162 (+494)
10K → 15K
24:33 | 7:54/mi
20K· 12.43 mi
1:39:03
Rank: #15714 (+448)
15K → 20K
24:41 | 7:57/mi
Half· 13.11 mi
1:44:22
Rank: #15637 (+77)
20K → Half
5:19 | 7:48/mi
25K· 15.53 mi
2:03:50
Rank: #15340 (+297)
Half → 25K
19:28 | 8:02/mi
30K· 18.64 mi
2:29:57
Rank: #15098 (+242)
25K → 30K
26:07 | 8:24/mi
20M
2:41:36
Rank: #14984 (+114)
30K → 20M
11:39 | 8:34/mi
21M
2:50:26
Rank: #14779 (+205)
20M → 21M
8:50 | 8:50/mi
35K· 21.75 mi
2:56:06
Rank: #14549 (+230)
21M → 35K
5:40 | 7:34/mi
23M
3:06:37
Rank: #14423 (+126)
35K → 23M
10:31 | 8:24/mi
24M
3:15:21
Rank: #14478 (-55)
23M → 24M
8:44 | 8:44/mi
40K· 24.85 mi
3:22:43
Rank: #14425 (+53)
24M → 40K
7:22 | 8:37/mi
25.2M
3:25:45
Rank: #14361 (+64)
40K → 25.2M
3:02 | 8:48/mi
Finish· 26.22 mi
3:33:40
Rank: #14208 (+153)
25.2M → Finish
7:55 | 7:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:22
Pace7:58 /mi
2nd Half
Distance13.11 mi
Time1:49:18
Pace8:20 /mi
📊Positive Split: 4.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0025:118:0625:11
8:06
-
10K
6.21 mi11:42:3849:498:0124:38
7:56
-0:10
15K
9.32 mi12:07:111:14:227:5924:33
7:54
-0:02
20K
12.43 mi12:31:521:39:037:5824:41
7:57
+0:03
Half
13.11 mi12:37:111:44:227:585:19
7:48
-0:09
25K
15.53 mi12:56:392:03:507:5819:28
8:02
+0:14
30K
18.64 mi13:22:462:29:578:0326:07
8:24
+0:22
20M
20.00 mi13:34:252:41:368:0511:39
8:34
+0:10
21M
21.00 mi13:43:152:50:268:078:50
8:50
+0:16
35K
21.75 mi13:48:552:56:068:065:40
7:34
-1:16
23M
23.00 mi13:59:263:06:378:0710:31
8:24
+0:50
24M
24.00 mi14:08:103:15:218:088:44
8:44
+0:20
40K
24.85 mi14:15:323:22:438:097:22
8:37
-0:07
25.2M
25.20 mi14:18:343:25:458:103:02
8:48
+0:11
Finish
26.22 mi14:26:293:33:408:097:55
7:46
-1:02

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

7:34 /mi

Average Pace

8:09 /mi

Slowest Pace

8:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:17:25

64% of race

Time at Steady Pace

1:16:15

36% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:09 /mi

Loading chart...
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.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
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
5K
3.11 mi11:18:0025:118:0625:11
8:06
#17390
10K
6.21 mi11:42:3849:498:0124:38
7:56
#16656
15K
9.32 mi12:07:111:14:227:5924:33
7:54
#16162
20K
12.43 mi12:31:521:39:037:5824:41
7:57
#15714
Half
13.11 mi12:37:111:44:227:585:19
7:48
#15637
25K
15.53 mi12:56:392:03:507:5819:28
8:02
#15340
30K
18.64 mi13:22:462:29:578:0326:07
8:24
#15098
20M
20.00 mi13:34:252:41:368:0511:39
8:34
#14984
21M
21.00 mi13:43:152:50:268:078:50
8:50
#14779
35K
21.75 mi13:48:552:56:068:065:40
7:34
#14549
23M
23.00 mi13:59:263:06:378:0710:31
8:24
#14423
24M
24.00 mi14:08:103:15:218:088:44
8:44
#14478
40K
24.85 mi14:15:323:22:438:097:22
8:37
#14425
25.2M
25.20 mi14:18:343:25:458:103:02
8:48
#14361
Finish
26.22 mi14:26:293:33:408:097:55
7:46
#14208
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi173905963596315262(Top 54%)4731(Top 39%)4731(Top 87%)
10K6.21 mi3.10 mi16656+7345526+4375526+43715909(Top 56%)5072(Top 41%)5072(Top 93%)
15K9.32 mi3.11 mi16162+4945234+2925234+29215262(Top 54%)4731(Top 39%)4731(Top 87%)
20K12.43 mi3.11 mi15714+4484990+2444990+24414508(Top 51%)4370(Top 36%)4370(Top 80%)
Half13.11 mi0.68 mi15637+774955+354955+3514270(Top 50%)4221(Top 35%)4221(Top 77%)
25K15.53 mi2.42 mi15340+2974798+1574798+15714143(Top 50%)4277(Top 35%)4277(Top 78%)
30K18.64 mi3.11 mi15098+2424723+754723+7514179(Top 50%)4475(Top 37%)4475(Top 82%)
20M20.00 mi1.36 mi14984+1144690+334690+3314268(Top 50%)4642(Top 38%)4642(Top 85%)
21M21.00 mi1.00 mi14779+2054593+974593+9712552(Top 44%)3899(Top 32%)3899(Top 71%)
35K21.75 mi0.75 mi14549+2304482+1114482+1119247(Top 33%)2269(Top 19%)2269(Top 41%)
23M23.00 mi1.25 mi14423+1264449+334449+3312712(Top 45%)4110(Top 34%)4110(Top 75%)
24M24.00 mi1.00 mi14478-554499-504499-5015938(Top 56%)5892(Top 48%)5892(Top 108%)
40K24.85 mi0.85 mi14425+534508-94508-914168(Top 50%)5048(Top 41%)5048(Top 92%)
25.2M25.20 mi0.35 mi14361+644484+244484+2410719(Top 38%)3375(Top 28%)3375(Top 62%)
Finish26.22 mi1.02 mi14208+1534425+594425+5911253(Top 40%)3589(Top 29%)3589(Top 66%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21stories
+97ft-345ft

Overall

15262

Females

4731

F18-39

4731

5K→10K

3.1 - 6.2 mi

Top 56%
×5stories
+79ft-138ft

Overall

15909

Females

5072

F18-39

5072

10K→15K

6.2 - 9.3 mi

Top 54%
×3stories
+67ft-78ft

Overall

15262

Females

4731

F18-39

4731

15K→20K

9.3 - 12.4 mi

Top 51%
×5stories
+106ft-86ft

Overall

14508

Females

4370

F18-39

4370

20K→Half

12.4 - 13.1 mi

Top 50%
×2stories
+19ft-37ft

Overall

14270

Females

4221

F18-39

4221

Half→25K

13.1 - 15.5 mi

Top 50%
×4stories
+66ft-88ft

Overall

14143

Females

4277

F18-39

4277

25K→30K

15.5 - 18.6 mi

Top 50%
×9stories
+181ft-148ft

Overall

14179

Females

4475

F18-39

4475

30K→20M

18.6 - 20.0 mi

Top 50%
×5stories
+64ft-50ft

Overall

14268

Females

4642

F18-39

4642

20M→21M

20.0 - 21.0 mi

Top 44%
×8stories
+106ft-24ft

Overall

12552

Females

3899

F18-39

3899

21M→35K

21.0 - 21.8 mi

Top 33%
×7stories
+17ft-86ft

Overall

9247

Females

2269

F18-39

2269

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

12712

Females

4110

F18-39

4110

23M→24M

23.0 - 24.0 mi

Top 56%
×6stories
+12ft-82ft

Overall

15938

Females

5892

F18-39

5892

24M→40K

24.0 - 24.9 mi

Top 50%
×1story
+6ft-20ft

Overall

14168

Females

5048

F18-39

5048

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10719

Females

3375

F18-39

3375

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

11253

Females

3589

F18-39

3589

Passing Analysis

Category:
Athletes Passed
3764
Passed By
582
Net Change
+3182
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17390
5K → 10K81379+734#17390#16656
10K → 15K53036+494#16656#16162
15K → 20K47123+448#16162#15714
20K → Half814+77#15714#15637
Half → 25K33437+297#15637#15340
25K → 30K351109+242#15340#15098
30K → 20M18773+114#15098#14984
20M → 21M22318+205#14984#14779
21M → 35K2333+230#14779#14549
35K → 23M16236+126#14549#14423
23M → 24M4398-55#14423#14478
24M → 40K10047+53#14478#14425
40K → 25.2M673+64#14425#14361
25.2M → Finish16916+153#14361#14208
TOTALS3764582+3182
📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing