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BOSTON MARATHON 2025

Kelsey Macaddino

Bib: 10273•F

MI

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 21%
Gender (Female)
#0 / 12228
Top 5%
Division (F18-39)
#0 / 5469
Top 10%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:09
Rank: #6380
Start → 5K
6:48/mi
21:09 split
10K· 6.21 mi
42:00
Rank: #5930 (+450)
5K → 10K
6:43/mi
20:51 split
15K· 9.32 mi
1:02:58
Rank: #5770 (+160)
10K → 15K
6:45/mi
20:58 split
20K· 12.43 mi
1:23:58
Rank: #5546 (+224)
15K → 20K
6:46/mi
21:00 split
Half· 13.11 mi
1:28:32
Rank: #5520 (+26)
20K → Half
6:42/mi
4:34 split
25K· 15.53 mi
1:44:53
Rank: #5291 (+229)
Half → 25K
6:45/mi
16:21 split
30K· 18.64 mi
2:06:18
Rank: #4963 (+328)
25K → 30K
6:54/mi
21:25 split
20M
2:16:41
Rank: #5209 (-246)
30K → 20M
7:38/mi
10:23 split
21M
2:24:19
Rank: #5214 (-5)
20M → 21M
7:38/mi
7:38 split
35K· 21.75 mi
2:29:53
Rank: #5319 (-105)
21M → 35K
7:26/mi
5:34 split
23M
2:40:15
Rank: #5607 (-288)
35K → 23M
8:17/mi
10:22 split
24M
2:47:56
Rank: #5681 (-74)
23M → 24M
7:41/mi
7:41 split
40K· 24.85 mi
2:55:06
Rank: #5860 (-179)
24M → 40K
8:23/mi
7:10 split
25.2M
2:58:31
Rank: #5980 (-120)
40K → 25.2M
9:54/mi
3:25 split
Finish· 26.22 mi
3:05:55
Rank: #5960 (+20)
25.2M → Finish
7:16/mi
7:24 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:32
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:37:23
Pace7:26 /mi
📊Positive Split: 10.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:47:0421:096:4821:09
6:48
-
10K
6.21 mi11:07:5542:006:4620:51
6:43
-0:05
15K
9.32 mi11:28:531:02:586:4520:58
6:45
+0:02
20K
12.43 mi11:49:531:23:586:4521:00
6:46
+0:01
Half
13.11 mi11:54:271:28:326:454:34
6:42
-0:04
25K
15.53 mi12:10:481:44:536:4516:21
6:45
+0:03
30K
18.64 mi12:32:132:06:186:4721:25
6:54
+0:09
20M
20.00 mi12:42:362:16:416:5010:23
7:38
+0:44
21M
21.00 mi12:50:142:24:196:527:38
7:38
0:00
35K
21.75 mi12:55:482:29:536:545:34
7:26
-0:12
23M
23.00 mi13:06:102:40:156:5810:22
8:17
+0:51
24M
24.00 mi13:13:512:47:567:007:41
7:41
-0:36
40K
24.85 mi13:21:012:55:067:037:10
8:23
+0:42
25.2M
25.20 mi13:24:262:58:317:053:25
9:54
+1:31
Finish
26.22 mi13:31:503:05:557:067:24
7:16
-2:38

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

6:42 /mi

Average Pace

7:06 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:44:53

56% of race

Time at Steady Pace

1:00:05

32% of race

Time at Slower Pace

20:57

11% of race

Average Pace: 7:05 /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 mi10:47:0421:096:4821:09
6:48
#6380
10K
6.21 mi11:07:5542:006:4620:51
6:43
#5930
15K
9.32 mi11:28:531:02:586:4520:58
6:45
#5770
20K
12.43 mi11:49:531:23:586:4521:00
6:46
#5546
Half
13.11 mi11:54:271:28:326:454:34
6:42
#5520
25K
15.53 mi12:10:481:44:536:4516:21
6:45
#5291
30K
18.64 mi12:32:132:06:186:4721:25
6:54
#4963
20M
20.00 mi12:42:362:16:416:5010:23
7:38
#5209
21M
21.00 mi12:50:142:24:196:527:38
7:38
#5214
35K
21.75 mi12:55:482:29:536:545:34
7:26
#5319
23M
23.00 mi13:06:102:40:156:5810:22
8:17
#5607
24M
24.00 mi13:13:512:47:567:007:41
7:41
#5681
40K
24.85 mi13:21:012:55:067:037:10
8:23
#5860
25.2M
25.20 mi13:24:262:58:317:053:25
9:54
#5980
Finish
26.22 mi13:31:503:05:557:067:24
7:16
#5960
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi63805505505604(Top 20%)466(Top 4%)466(Top 9%)
10K6.21 mi3.10 mi5930+450468+82468+825463(Top 19%)412(Top 3%)412(Top 8%)
15K9.32 mi3.11 mi5770+160453+15453+155604(Top 20%)466(Top 4%)466(Top 9%)
20K12.43 mi3.11 mi5546+224427+26427+264933(Top 17%)365(Top 3%)365(Top 7%)
Half13.11 mi0.68 mi5520+26429-2429-25317(Top 19%)423(Top 3%)423(Top 8%)
25K15.53 mi2.42 mi5291+229398+31398+314462(Top 16%)326(Top 3%)326(Top 6%)
30K18.64 mi3.11 mi4963+328368+30368+304043(Top 14%)312(Top 3%)312(Top 6%)
20M20.00 mi1.36 mi5209-246420-52420-527932(Top 28%)1524(Top 12%)1524(Top 28%)
21M21.00 mi1.00 mi5214-5421-1421-15339(Top 19%)714(Top 6%)714(Top 13%)
35K21.75 mi0.75 mi5319-105444-23444-238231(Top 29%)1759(Top 14%)1759(Top 32%)
23M23.00 mi1.25 mi5607-288514-70514-7011924(Top 42%)3691(Top 30%)3691(Top 67%)
24M24.00 mi1.00 mi5681-74551-37551-379017(Top 32%)2325(Top 19%)2325(Top 43%)
40K24.85 mi0.85 mi5860-179607-56607-5612688(Top 45%)4262(Top 35%)4262(Top 78%)
25.2M25.20 mi0.35 mi5980-120641-34641-3416597(Top 58%)6365(Top 52%)6365(Top 116%)
Finish26.22 mi1.02 mi5960+20658-17658-177510(Top 26%)1846(Top 15%)1846(Top 34%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5604

Females

466

F18-39

466

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

5463

Females

412

F18-39

412

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5604

Females

466

F18-39

466

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4933

Females

365

F18-39

365

20K→Half

12.4 - 13.1 mi

Top 19%
×2stories
+19ft-37ft

Overall

5317

Females

423

F18-39

423

Half→25K

13.1 - 15.5 mi

Top 16%
×4stories
+66ft-88ft

Overall

4462

Females

326

F18-39

326

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

4043

Females

312

F18-39

312

30K→20M

18.6 - 20.0 mi

Top 28%
×5stories
+64ft-50ft

Overall

7932

Females

1524

F18-39

1524

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5339

Females

714

F18-39

714

21M→35K

21.0 - 21.8 mi

Top 29%
×7stories
+17ft-86ft

Overall

8231

Females

1759

F18-39

1759

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

11924

Females

3691

F18-39

3691

23M→24M

23.0 - 24.0 mi

Top 32%
×6stories
+12ft-82ft

Overall

9017

Females

2325

F18-39

2325

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

12688

Females

4262

F18-39

4262

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16597

Females

6365

F18-39

6365

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

7510

Females

1846

F18-39

1846

Passing Analysis

Category:
Athletes Passed
1896
Passed By
1476
Net Change
+420
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6380
5K → 10K48838+450#6380#5930
10K → 15K21454+160#5930#5770
15K → 20K26036+224#5770#5546
20K → Half3711+26#5546#5520
Half → 25K24819+229#5520#5291
25K → 30K35123+328#5291#4963
30K → 20M25271-246#4963#5209
20M → 21M8691-5#5209#5214
21M → 35K22127-105#5214#5319
35K → 23M31319-288#5319#5607
23M → 24M33107-74#5607#5681
24M → 40K17196-179#5681#5860
40K → 25.2M7127-120#5860#5980
25.2M → Finish7757+20#5980#5960
TOTALS18961476+420
📊

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