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BOSTON MARATHON 2025

Shanthini Kasturi

Bib: 28230•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:12
Rank: #23914
Start → 5K
29:12 | 9:24/mi
10K· 6.21 mi
57:05
Rank: #23164 (+750)
5K → 10K
27:53 | 8:58/mi
15K· 9.32 mi
1:24:34
Rank: #22590 (+574)
10K → 15K
27:29 | 8:51/mi
20K· 12.43 mi
1:52:24
Rank: #22131 (+459)
15K → 20K
27:50 | 8:58/mi
Half· 13.11 mi
1:58:21
Rank: #22041 (+90)
20K → Half
5:57 | 8:43/mi
25K· 15.53 mi
2:20:22
Rank: #21728 (+313)
Half → 25K
22:01 | 9:05/mi
30K· 18.64 mi
2:49:05
Rank: #21199 (+529)
25K → 30K
28:43 | 9:15/mi
20M
3:01:44
Rank: #20967 (+232)
30K → 20M
12:39 | 9:19/mi
21M
3:11:28
Rank: #20721 (+246)
20M → 21M
9:44 | 9:44/mi
35K· 21.75 mi
3:18:19
Rank: #20651 (+70)
21M → 35K
6:51 | 9:09/mi
23M
3:31:09
Rank: #20740 (-89)
35K → 23M
12:50 | 10:15/mi
24M
3:40:25
Rank: #20658 (+82)
23M → 24M
9:16 | 9:16/mi
40K· 24.85 mi
3:48:08
Rank: #20525 (+133)
24M → 40K
7:43 | 9:02/mi
25.2M
3:51:32
Rank: #20485 (+40)
40K → 25.2M
3:24 | 9:52/mi
Finish· 26.22 mi
4:00:24
Rank: #20409 (+76)
25.2M → Finish
8:52 | 8:42/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:21
Pace9:02 /mi
2nd Half
Distance13.11 mi
Time2:02:03
Pace9:19 /mi
📊Positive Split: 3.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:4629:129:2429:12
9:24
-
10K
6.21 mi12:14:3957:059:1127:53
8:58
-0:26
15K
9.32 mi12:42:081:24:349:0427:29
8:51
-0:07
20K
12.43 mi13:09:581:52:249:0327:50
8:58
+0:07
Half
13.11 mi13:15:551:58:219:025:57
8:43
-0:15
25K
15.53 mi13:37:562:20:229:0222:01
9:05
+0:22
30K
18.64 mi14:06:392:49:059:0428:43
9:15
+0:10
20M
20.00 mi14:19:183:01:449:0512:39
9:19
+0:04
21M
21.00 mi14:29:023:11:289:079:44
9:44
+0:25
35K
21.75 mi14:35:533:18:199:076:51
9:09
-0:35
23M
23.00 mi14:48:433:31:099:1112:50
10:15
+1:06
24M
24.00 mi14:57:593:40:259:119:16
9:16
-0:59
40K
24.85 mi15:05:423:48:089:117:43
9:02
-0:14
25.2M
25.20 mi15:09:063:51:329:113:24
9:52
+0:50
Finish
26.22 mi15:17:584:00:249:118:52
8:42
-1:10

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

8:42 /mi

Average Pace

9:11 /mi

Slowest Pace

10:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:34:26

89% of race

Time at Steady Pace

25:58

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:10 /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 mi11:46:4629:129:2429:12
9:24
#23914
10K
6.21 mi12:14:3957:059:1127:53
8:58
#23164
15K
9.32 mi12:42:081:24:349:0427:29
8:51
#22590
20K
12.43 mi13:09:581:52:249:0327:50
8:58
#22131
Half
13.11 mi13:15:551:58:219:025:57
8:43
#22041
25K
15.53 mi13:37:562:20:229:0222:01
9:05
#21728
30K
18.64 mi14:06:392:49:059:0428:43
9:15
#21199
20M
20.00 mi14:19:183:01:449:0512:39
9:19
#20967
21M
21.00 mi14:29:023:11:289:079:44
9:44
#20721
35K
21.75 mi14:35:533:18:199:076:51
9:09
#20651
23M
23.00 mi14:48:433:31:099:1112:50
10:15
#20740
24M
24.00 mi14:57:593:40:259:119:16
9:16
#20658
40K
24.85 mi15:05:423:48:089:117:43
9:02
#20525
25.2M
25.20 mi15:09:063:51:329:113:24
9:52
#20485
Finish
26.22 mi15:17:584:00:249:118:52
8:42
#20409
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi239149651965121270(Top 75%)8146(Top 67%)8146(Top 474%)
10K6.21 mi3.10 mi23164+7509233+4189233+41822277(Top 78%)8752(Top 72%)8752(Top 509%)
15K9.32 mi3.11 mi22590+5748902+3318902+33121270(Top 75%)8146(Top 67%)8146(Top 474%)
20K12.43 mi3.11 mi22131+4598668+2348668+23420771(Top 73%)7930(Top 65%)7930(Top 462%)
Half13.11 mi0.68 mi22041+908620+488620+4820533(Top 72%)7781(Top 64%)7781(Top 453%)
25K15.53 mi2.42 mi21728+3138459+1618459+16120278(Top 71%)7687(Top 63%)7687(Top 447%)
30K18.64 mi3.11 mi21199+5298191+2688191+26818876(Top 66%)7056(Top 58%)7056(Top 411%)
20M20.00 mi1.36 mi20967+2328079+1128079+11218367(Top 65%)6940(Top 57%)6940(Top 404%)
21M21.00 mi1.00 mi20721+2467971+1087971+10817216(Top 61%)6388(Top 52%)6388(Top 372%)
35K21.75 mi0.75 mi20651+707950+217950+2119017(Top 67%)7468(Top 61%)7468(Top 435%)
23M23.00 mi1.25 mi20740-898018-688018-6821277(Top 75%)8690(Top 71%)8690(Top 506%)
24M24.00 mi1.00 mi20658+827987+317987+3118696(Top 66%)7391(Top 60%)7391(Top 430%)
40K24.85 mi0.85 mi20525+1337936+517936+5116507(Top 58%)6330(Top 52%)6330(Top 368%)
25.2M25.20 mi0.35 mi20485+407918+187918+1816487(Top 58%)6348(Top 52%)6348(Top 369%)
Finish26.22 mi1.02 mi20409+767894+247894+2417514(Top 62%)6836(Top 56%)6836(Top 398%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×21stories
+97ft-345ft

Overall

21270

Females

8146

F40-44

8146

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

22277

Females

8752

F40-44

8752

10K→15K

6.2 - 9.3 mi

Top 75%
×3stories
+67ft-78ft

Overall

21270

Females

8146

F40-44

8146

15K→20K

9.3 - 12.4 mi

Top 73%
×5stories
+106ft-86ft

Overall

20771

Females

7930

F40-44

7930

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

20533

Females

7781

F40-44

7781

Half→25K

13.1 - 15.5 mi

Top 71%
×4stories
+66ft-88ft

Overall

20278

Females

7687

F40-44

7687

25K→30K

15.5 - 18.6 mi

Top 66%
×9stories
+181ft-148ft

Overall

18876

Females

7056

F40-44

7056

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

18367

Females

6940

F40-44

6940

20M→21M

20.0 - 21.0 mi

Top 61%
×8stories
+106ft-24ft

Overall

17216

Females

6388

F40-44

6388

21M→35K

21.0 - 21.8 mi

Top 67%
×7stories
+17ft-86ft

Overall

19017

Females

7468

F40-44

7468

35K→23M

21.8 - 23.0 mi

Top 75%
×5stories
+23ft-63ft

Overall

21277

Females

8690

F40-44

8690

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

18696

Females

7391

F40-44

7391

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16507

Females

6330

F40-44

6330

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16487

Females

6348

F40-44

6348

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2stories
+22ft-21ft

Overall

17514

Females

6836

F40-44

6836

Passing Analysis

Category:
Athletes Passed
3839
Passed By
334
Net Change
+3505
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23914
5K → 10K78434+750#23914#23164
10K → 15K58511+574#23164#22590
15K → 20K47213+459#22590#22131
20K → Half922+90#22131#22041
Half → 25K33320+313#22041#21728
25K → 30K54415+529#21728#21199
30K → 20M2408+232#21199#20967
20M → 21M25711+246#20967#20721
21M → 35K8717+70#20721#20651
35K → 23M62151-89#20651#20740
23M → 24M10321+82#20740#20658
24M → 40K1407+133#20658#20525
40K → 25.2M477+40#20525#20485
25.2M → Finish9317+76#20485#20409
TOTALS3839334+3505
📊

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