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BOSTON MARATHON 2025

Mackenzie Smith

Bib: 19409•F

UT

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
25:57
Rank: #19020
Start → 5K
25:57 | 8:21/mi
10K· 6.21 mi
53:11
Rank: #20179 (-1159)
5K → 10K
27:14 | 8:46/mi
15K· 9.32 mi
1:21:09
Rank: #20777 (-598)
10K → 15K
27:58 | 9:00/mi
20K· 12.43 mi
1:50:24
Rank: #21353 (-576)
15K → 20K
29:15 | 9:25/mi
Half· 13.11 mi
1:56:51
Rank: #21502 (-149)
20K → Half
6:27 | 9:27/mi
25K· 15.53 mi
2:20:06
Rank: #21634 (-132)
Half → 25K
23:15 | 9:35/mi
30K· 18.64 mi
2:52:59
Rank: #22086 (-452)
25K → 30K
32:53 | 10:35/mi
20M
3:06:37
Rank: #21999 (+87)
30K → 20M
13:38 | 10:02/mi
21M
3:17:26
Rank: #21918 (+81)
20M → 21M
10:49 | 10:49/mi
35K· 21.75 mi
3:25:38
Rank: #22017 (-99)
21M → 35K
8:12 | 10:58/mi
23M
3:38:21
Rank: #21927 (+90)
35K → 23M
12:43 | 10:09/mi
24M
3:48:21
Rank: #21900 (+27)
23M → 24M
10:00 | 10:00/mi
40K· 24.85 mi
3:57:06
Rank: #21874 (+26)
24M → 40K
8:45 | 10:14/mi
25.2M
4:01:09
Rank: #21875 (-1)
40K → 25.2M
4:03 | 11:45/mi
Finish· 26.22 mi
4:11:40
Rank: #21948 (-73)
25.2M → Finish
10:31 | 10:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:51
Pace8:55 /mi
2nd Half
Distance13.11 mi
Time2:14:49
Pace10:17 /mi
📊Positive Split: 15.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:0325:578:2125:57
8:21
-
10K
6.21 mi11:47:1753:118:3427:14
8:46
+0:25
15K
9.32 mi12:15:151:21:098:4227:58
9:00
+0:14
20K
12.43 mi12:44:301:50:248:5329:15
9:25
+0:25
Half
13.11 mi12:50:571:56:518:556:27
9:27
+0:02
25K
15.53 mi13:14:122:20:069:0123:15
9:35
+0:08
30K
18.64 mi13:47:052:52:599:1732:53
10:35
+1:00
20M
20.00 mi14:00:433:06:379:2013:38
10:02
-0:33
21M
21.00 mi14:11:323:17:269:2410:49
10:49
+0:47
35K
21.75 mi14:19:443:25:389:278:12
10:58
+0:09
23M
23.00 mi14:32:273:38:219:3012:43
10:09
-0:49
24M
24.00 mi14:42:273:48:219:3110:00
10:00
-0:09
40K
24.85 mi14:51:123:57:069:328:45
10:14
+0:14
25.2M
25.20 mi14:55:154:01:099:344:03
11:45
+1:31
Finish
26.22 mi15:05:464:11:409:3610:31
10:19
-1:26

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

8:21 /mi

Average Pace

9:36 /mi

Slowest Pace

11:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:06

56% of race

Time at Steady Pace

55:37

22% of race

Time at Slower Pace

55:57

22% of race

Average Pace: 9:36 /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 mi11:20:0325:578:2125:57
8:21
#19020
10K
6.21 mi11:47:1753:118:3427:14
8:46
#20179
15K
9.32 mi12:15:151:21:098:4227:58
9:00
#20777
20K
12.43 mi12:44:301:50:248:5329:15
9:25
#21353
Half
13.11 mi12:50:571:56:518:556:27
9:27
#21502
25K
15.53 mi13:14:122:20:069:0123:15
9:35
#21634
30K
18.64 mi13:47:052:52:599:1732:53
10:35
#22086
20M
20.00 mi14:00:433:06:379:2013:38
10:02
#21999
21M
21.00 mi14:11:323:17:269:2410:49
10:49
#21918
35K
21.75 mi14:19:443:25:389:278:12
10:58
#22017
23M
23.00 mi14:32:273:38:219:3012:43
10:09
#21927
24M
24.00 mi14:42:273:48:219:3110:00
10:00
#21900
40K
24.85 mi14:51:123:57:069:328:45
10:14
#21874
25.2M
25.20 mi14:55:154:01:099:344:03
11:45
#21875
Finish
26.22 mi15:05:464:11:409:3610:31
10:19
#21948
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi190206926692622034(Top 78%)8577(Top 70%)8577(Top 499%)
10K6.21 mi3.10 mi20179-11597583-6577583-65721222(Top 75%)8156(Top 67%)8156(Top 475%)
15K9.32 mi3.11 mi20777-5987913-3307913-33022034(Top 78%)8577(Top 70%)8577(Top 499%)
20K12.43 mi3.11 mi21353-5768230-3178230-31722611(Top 80%)8926(Top 73%)8926(Top 520%)
Half13.11 mi0.68 mi21502-1498316-868316-8623390(Top 82%)9375(Top 77%)9375(Top 546%)
25K15.53 mi2.42 mi21634-1328400-848400-8422142(Top 78%)8734(Top 71%)8734(Top 508%)
30K18.64 mi3.11 mi22086-4528669-2698669-26923129(Top 81%)9397(Top 77%)9397(Top 547%)
20M20.00 mi1.36 mi21999+878638+318638+3121039(Top 74%)8388(Top 69%)8388(Top 488%)
21M21.00 mi1.00 mi21918+818618+208618+2020870(Top 73%)8392(Top 69%)8392(Top 488%)
35K21.75 mi0.75 mi22017-998687-698687-6924101(Top 85%)10122(Top 83%)10122(Top 589%)
23M23.00 mi1.25 mi21927+908677+108677+1020969(Top 74%)8546(Top 70%)8546(Top 497%)
24M24.00 mi1.00 mi21900+278687-108687-1021354(Top 75%)8788(Top 72%)8788(Top 512%)
40K24.85 mi0.85 mi21874+268692-58692-521151(Top 74%)8749(Top 72%)8749(Top 509%)
25.2M25.20 mi0.35 mi21875-18699-78699-722612(Top 80%)9488(Top 78%)9488(Top 552%)
Finish26.22 mi1.02 mi21948-738750-518750-5123826(Top 84%)10088(Top 82%)10088(Top 587%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

22034

Females

8577

F40-44

8577

5K→10K

3.1 - 6.2 mi

Top 75%
×5stories
+79ft-138ft

Overall

21222

Females

8156

F40-44

8156

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

22034

Females

8577

F40-44

8577

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

22611

Females

8926

F40-44

8926

20K→Half

12.4 - 13.1 mi

Top 82%
×2stories
+19ft-37ft

Overall

23390

Females

9375

F40-44

9375

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22142

Females

8734

F40-44

8734

25K→30K

15.5 - 18.6 mi

Top 81%
×9stories
+181ft-148ft

Overall

23129

Females

9397

F40-44

9397

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

21039

Females

8388

F40-44

8388

20M→21M

20.0 - 21.0 mi

Top 73%
×8stories
+106ft-24ft

Overall

20870

Females

8392

F40-44

8392

21M→35K

21.0 - 21.8 mi

Top 85%
×7stories
+17ft-86ft

Overall

24101

Females

10122

F40-44

10122

35K→23M

21.8 - 23.0 mi

Top 74%
×5stories
+23ft-63ft

Overall

20969

Females

8546

F40-44

8546

23M→24M

23.0 - 24.0 mi

Top 75%
×6stories
+12ft-82ft

Overall

21354

Females

8788

F40-44

8788

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21151

Females

8749

F40-44

8749

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

22612

Females

9488

F40-44

9488

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2stories
+22ft-21ft

Overall

23826

Females

10088

F40-44

10088

Passing Analysis

Category:
Athletes Passed
931
Passed By
3859
Net Change
-2928
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19020
5K → 10K331192-1159#19020#20179
10K → 15K68666-598#20179#20777
15K → 20K77653-576#20777#21353
20K → Half4153-149#21353#21502
Half → 25K107239-132#21502#21634
25K → 30K81533-452#21634#22086
30K → 20M13144+87#22086#21999
20M → 21M11736+81#21999#21918
21M → 35K16115-99#21918#22017
35K → 23M12737+90#22017#21927
23M → 24M6639+27#21927#21900
24M → 40K6034+26#21900#21874
40K → 25.2M1920-1#21874#21875
25.2M → Finish2598-73#21875#21948
TOTALS9313859-2928
📊

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