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BOSTON MARATHON 2025

Tara Kersten

Bib: 15078•F

WI

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 49%
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
23:24
Rank: #12549
Start → 5K
23:24 | 7:32/mi
10K· 6.21 mi
47:21
Rank: #13231 (-682)
5K → 10K
23:57 | 7:43/mi
15K· 9.32 mi
1:11:40
Rank: #13662 (-431)
10K → 15K
24:19 | 7:50/mi
20K· 12.43 mi
1:38:04
Rank: #15022 (-1360)
15K → 20K
26:24 | 8:30/mi
Half· 13.11 mi
1:43:29
Rank: #15040 (-18)
20K → Half
5:25 | 7:56/mi
25K· 15.53 mi
2:04:57
Rank: #15915 (-875)
Half → 25K
21:28 | 8:51/mi
30K· 18.64 mi
2:33:56
Rank: #16573 (-658)
25K → 30K
28:59 | 9:20/mi
20M
2:46:40
Rank: #16729 (-156)
30K → 20M
12:44 | 9:22/mi
21M
2:57:08
Rank: #16917 (-188)
20M → 21M
10:28 | 10:28/mi
35K· 21.75 mi
3:03:39
Rank: #16897 (+20)
21M → 35K
6:31 | 8:43/mi
23M
3:15:31
Rank: #17017 (-120)
35K → 23M
11:52 | 9:29/mi
24M
3:24:28
Rank: #17026 (-9)
23M → 24M
8:57 | 8:57/mi
40K· 24.85 mi
3:32:22
Rank: #17054 (-28)
24M → 40K
7:54 | 9:14/mi
25.2M
3:36:10
Rank: #17128 (-74)
40K → 25.2M
3:48 | 11:01/mi
Finish· 26.22 mi
3:44:34
Rank: #17026 (+102)
25.2M → Finish
8:24 | 8:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:29
Pace7:54 /mi
2nd Half
Distance13.11 mi
Time2:01:05
Pace9:14 /mi
📊Positive Split: 17.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:2223:247:3223:24
7:32
-
10K
6.21 mi11:20:1947:217:3723:57
7:43
+0:11
15K
9.32 mi11:44:381:11:407:4124:19
7:50
+0:07
20K
12.43 mi12:11:021:38:047:5326:24
8:30
+0:40
Half
13.11 mi12:16:271:43:297:545:25
7:56
-0:34
25K
15.53 mi12:37:552:04:578:0321:28
8:51
+0:55
30K
18.64 mi13:06:542:33:568:1528:59
9:20
+0:29
20M
20.00 mi13:19:382:46:408:2012:44
9:22
+0:02
21M
21.00 mi13:30:062:57:088:2610:28
10:28
+1:06
35K
21.75 mi13:36:373:03:398:276:31
8:43
-1:45
23M
23.00 mi13:48:293:15:318:3011:52
9:29
+0:46
24M
24.00 mi13:57:263:24:288:318:57
8:57
-0:32
40K
24.85 mi14:05:203:32:228:337:54
9:14
+0:17
25.2M
25.20 mi14:09:083:36:108:353:48
11:01
+1:47
Finish
26.22 mi14:17:323:44:348:348:24
8:15
-2:46

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

7:32 /mi

Average Pace

8:34 /mi

Slowest Pace

11:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:25:29

38% of race

Time at Steady Pace

1:11:14

32% of race

Time at Slower Pace

1:07:51

30% of race

Average Pace: 8:34 /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 mi10:56:2223:247:3223:24
7:32
#12549
10K
6.21 mi11:20:1947:217:3723:57
7:43
#13231
15K
9.32 mi11:44:381:11:407:4124:19
7:50
#13662
20K
12.43 mi12:11:021:38:047:5326:24
8:30
#15022
Half
13.11 mi12:16:271:43:297:545:25
7:56
#15040
25K
15.53 mi12:37:552:04:578:0321:28
8:51
#15915
30K
18.64 mi13:06:542:33:568:1528:59
9:20
#16573
20M
20.00 mi13:19:382:46:408:2012:44
9:22
#16729
21M
21.00 mi13:30:062:57:088:2610:28
10:28
#16917
35K
21.75 mi13:36:373:03:398:276:31
8:43
#16897
23M
23.00 mi13:48:293:15:318:3011:52
9:29
#17017
24M
24.00 mi13:57:263:24:288:318:57
8:57
#17026
40K
24.85 mi14:05:203:32:228:337:54
9:14
#17054
25.2M
25.20 mi14:09:083:36:108:353:48
11:01
#17128
Finish
26.22 mi14:17:323:44:348:348:24
8:15
#17026
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi125493096309614624(Top 51%)4375(Top 36%)4375(Top 80%)
10K6.21 mi3.10 mi13231-6823485-3893485-38913990(Top 49%)3959(Top 32%)3959(Top 72%)
15K9.32 mi3.11 mi13662-4313778-2933778-29314624(Top 51%)4375(Top 36%)4375(Top 80%)
20K12.43 mi3.11 mi15022-13604599-8214599-82118227(Top 64%)6462(Top 53%)6462(Top 118%)
Half13.11 mi0.68 mi15040-184607-84607-815519(Top 55%)4919(Top 40%)4919(Top 90%)
25K15.53 mi2.42 mi15915-8755118-5115118-51119218(Top 68%)7090(Top 58%)7090(Top 130%)
30K18.64 mi3.11 mi16573-6585567-4495567-44919245(Top 68%)7249(Top 59%)7249(Top 133%)
20M20.00 mi1.36 mi16729-1565679-1125679-11218620(Top 66%)7059(Top 58%)7059(Top 129%)
21M21.00 mi1.00 mi16917-1885822-1435822-14319905(Top 70%)7853(Top 64%)7853(Top 144%)
35K21.75 mi0.75 mi16897+205834-125834-1216779(Top 59%)6203(Top 51%)6203(Top 113%)
23M23.00 mi1.25 mi17017-1205945-1115945-11118587(Top 65%)7280(Top 60%)7280(Top 133%)
24M24.00 mi1.00 mi17026-95974-295974-2917131(Top 60%)6566(Top 54%)6566(Top 120%)
40K24.85 mi0.85 mi17054-286018-446018-4417546(Top 62%)6879(Top 56%)6879(Top 126%)
25.2M25.20 mi0.35 mi17128-746072-546072-5420718(Top 73%)8502(Top 70%)8502(Top 155%)
Finish26.22 mi1.02 mi17026+1026035+376035+3714602(Top 51%)5270(Top 43%)5270(Top 96%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21stories
+97ft-345ft

Overall

14624

Females

4375

F18-39

4375

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

13990

Females

3959

F18-39

3959

10K→15K

6.2 - 9.3 mi

Top 51%
×3stories
+67ft-78ft

Overall

14624

Females

4375

F18-39

4375

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

18227

Females

6462

F18-39

6462

20K→Half

12.4 - 13.1 mi

Top 55%
×2stories
+19ft-37ft

Overall

15519

Females

4919

F18-39

4919

Half→25K

13.1 - 15.5 mi

Top 68%
×4stories
+66ft-88ft

Overall

19218

Females

7090

F18-39

7090

25K→30K

15.5 - 18.6 mi

Top 68%
×9stories
+181ft-148ft

Overall

19245

Females

7249

F18-39

7249

30K→20M

18.6 - 20.0 mi

Top 66%
×5stories
+64ft-50ft

Overall

18620

Females

7059

F18-39

7059

20M→21M

20.0 - 21.0 mi

Top 70%
×8stories
+106ft-24ft

Overall

19905

Females

7853

F18-39

7853

21M→35K

21.0 - 21.8 mi

Top 59%
×7stories
+17ft-86ft

Overall

16779

Females

6203

F18-39

6203

35K→23M

21.8 - 23.0 mi

Top 65%
×5stories
+23ft-63ft

Overall

18587

Females

7280

F18-39

7280

23M→24M

23.0 - 24.0 mi

Top 60%
×6stories
+12ft-82ft

Overall

17131

Females

6566

F18-39

6566

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17546

Females

6879

F18-39

6879

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

20718

Females

8502

F18-39

8502

25.2M→Finish

25.2 - 26.2 mi

Top 51%
×2stories
+22ft-21ft

Overall

14602

Females

5270

F18-39

5270

Passing Analysis

Category:
Athletes Passed
920
Passed By
5397
Net Change
-4477
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12549
5K → 10K88770-682#12549#13231
10K → 15K92523-431#13231#13662
15K → 20K301390-1360#13662#15022
20K → Half3149-18#15022#15040
Half → 25K35910-875#15040#15915
25K → 30K81739-658#15915#16573
30K → 20M66222-156#16573#16729
20M → 21M65253-188#16729#16917
21M → 35K7252+20#16917#16897
35K → 23M82202-120#16897#17017
23M → 24M7685-9#17017#17026
24M → 40K6290-28#17026#17054
40K → 25.2M1892-74#17054#17128
25.2M → Finish12220+102#17128#17026
TOTALS9205397-4477
📊

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