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BOSTON MARATHON 2025

Mackenzie Howard

Bib: 10973•F

CT

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 19%
Gender (Female)
#0 / 12228
Top 4%
Division (F18-39)
#0 / 5469
Top 9%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:27
Rank: #7121
Start → 5K
21:27 | 6:54/mi
10K· 6.21 mi
42:45
Rank: #7017 (+104)
5K → 10K
21:18 | 6:51/mi
15K· 9.32 mi
1:04:01
Rank: #6822 (+195)
10K → 15K
21:16 | 6:51/mi
20K· 12.43 mi
1:25:25
Rank: #6617 (+205)
15K → 20K
21:24 | 6:53/mi
Half· 13.11 mi
1:30:03
Rank: #6589 (+28)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:46:53
Rank: #6425 (+164)
Half → 25K
16:50 | 6:57/mi
30K· 18.64 mi
2:09:16
Rank: #6223 (+202)
25K → 30K
22:23 | 7:12/mi
20M
2:19:11
Rank: #6127 (+96)
30K → 20M
9:55 | 7:18/mi
21M
2:26:57
Rank: #6079 (+48)
20M → 21M
7:46 | 7:46/mi
35K· 21.75 mi
2:32:10
Rank: #6018 (+61)
21M → 35K
5:13 | 6:58/mi
23M
2:41:23
Rank: #5911 (+107)
35K → 23M
9:13 | 7:22/mi
24M
2:48:26
Rank: #5807 (+104)
23M → 24M
7:03 | 7:03/mi
40K· 24.85 mi
2:54:24
Rank: #5668 (+139)
24M → 40K
5:58 | 6:59/mi
25.2M
2:57:02
Rank: #5602 (+66)
40K → 25.2M
2:38 | 7:38/mi
Finish· 26.22 mi
3:03:53
Rank: #5493 (+109)
25.2M → Finish
6:51 | 6:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:30:03
Pace6:52 /mi
2nd Half
Distance13.11 mi
Time1:33:50
Pace7:09 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:1921:276:5421:27
6:54
-
10K
6.21 mi11:09:3742:456:5321:18
6:51
-0:03
15K
9.32 mi11:30:531:04:016:5221:16
6:51
0:00
20K
12.43 mi11:52:171:25:256:5221:24
6:53
+0:02
Half
13.11 mi11:56:551:30:036:524:38
6:47
-0:06
25K
15.53 mi12:13:451:46:536:5316:50
6:57
+0:10
30K
18.64 mi12:36:082:09:166:5622:23
7:12
+0:15
20M
20.00 mi12:46:032:19:116:589:55
7:18
+0:06
21M
21.00 mi12:53:492:26:577:007:46
7:46
+0:28
35K
21.75 mi12:59:022:32:107:005:13
6:58
-0:48
23M
23.00 mi13:08:152:41:237:019:13
7:22
+0:24
24M
24.00 mi13:15:182:48:267:017:03
7:03
-0:19
40K
24.85 mi13:21:162:54:247:015:58
6:59
-0:04
25.2M
25.20 mi13:23:542:57:027:022:38
7:38
+0:39
Finish
26.22 mi13:30:453:03:537:016:51
6:43
-0:55

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

6:43 /mi

Average Pace

7:01 /mi

Slowest Pace

7:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:53:29

94% of race

Time at Steady Pace

10:24

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:01 /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 mi10:48:1921:276:5421:27
6:54
#7121
10K
6.21 mi11:09:3742:456:5321:18
6:51
#7017
15K
9.32 mi11:30:531:04:016:5221:16
6:51
#6822
20K
12.43 mi11:52:171:25:256:5221:24
6:53
#6617
Half
13.11 mi11:56:551:30:036:524:38
6:47
#6589
25K
15.53 mi12:13:451:46:536:5316:50
6:57
#6425
30K
18.64 mi12:36:082:09:166:5622:23
7:12
#6223
20M
20.00 mi12:46:032:19:116:589:55
7:18
#6127
21M
21.00 mi12:53:492:26:577:007:46
7:46
#6079
35K
21.75 mi12:59:022:32:107:005:13
6:58
#6018
23M
23.00 mi13:08:152:41:237:019:13
7:22
#5911
24M
24.00 mi13:15:182:48:267:017:03
7:03
#5807
40K
24.85 mi13:21:162:54:247:015:58
6:59
#5668
25.2M
25.20 mi13:23:542:57:027:022:38
7:38
#5602
Finish
26.22 mi13:30:453:03:537:016:51
6:43
#5493
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi71217117116546(Top 23%)628(Top 5%)628(Top 11%)
10K6.21 mi3.10 mi7017+104699+12699+126939(Top 24%)693(Top 6%)693(Top 13%)
15K9.32 mi3.11 mi6822+195669+30669+306546(Top 23%)628(Top 5%)628(Top 11%)
20K12.43 mi3.11 mi6617+205628+41628+416111(Top 22%)577(Top 5%)577(Top 11%)
Half13.11 mi0.68 mi6589+28624+4624+46160(Top 22%)573(Top 5%)573(Top 10%)
25K15.53 mi2.42 mi6425+164602+22602+225953(Top 21%)576(Top 5%)576(Top 11%)
30K18.64 mi3.11 mi6223+202600+2600+25934(Top 21%)650(Top 5%)650(Top 12%)
20M20.00 mi1.36 mi6127+96596+4596+45799(Top 20%)727(Top 6%)727(Top 13%)
21M21.00 mi1.00 mi6079+48601-5601-56010(Top 21%)918(Top 8%)918(Top 17%)
35K21.75 mi0.75 mi6018+61600+1600+15211(Top 18%)668(Top 5%)668(Top 12%)
23M23.00 mi1.25 mi5911+107585+15585+155826(Top 21%)940(Top 8%)940(Top 17%)
24M24.00 mi1.00 mi5807+104580+5580+54942(Top 17%)707(Top 6%)707(Top 13%)
40K24.85 mi0.85 mi5668+139562+18562+183813(Top 13%)458(Top 4%)458(Top 8%)
25.2M25.20 mi0.35 mi5602+66554+8554+84110(Top 14%)588(Top 5%)588(Top 11%)
Finish26.22 mi1.02 mi5493+109540+14540+144046(Top 14%)564(Top 5%)564(Top 10%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21stories
+97ft-345ft

Overall

6546

Females

628

F18-39

628

5K→10K

3.1 - 6.2 mi

Top 24%
×5stories
+79ft-138ft

Overall

6939

Females

693

F18-39

693

10K→15K

6.2 - 9.3 mi

Top 23%
×3stories
+67ft-78ft

Overall

6546

Females

628

F18-39

628

15K→20K

9.3 - 12.4 mi

Top 22%
×5stories
+106ft-86ft

Overall

6111

Females

577

F18-39

577

20K→Half

12.4 - 13.1 mi

Top 22%
×2stories
+19ft-37ft

Overall

6160

Females

573

F18-39

573

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5953

Females

576

F18-39

576

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5934

Females

650

F18-39

650

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5799

Females

727

F18-39

727

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

6010

Females

918

F18-39

918

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

5211

Females

668

F18-39

668

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5826

Females

940

F18-39

940

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4942

Females

707

F18-39

707

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3813

Females

458

F18-39

458

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

4110

Females

588

F18-39

588

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

4046

Females

564

F18-39

564

Passing Analysis

Category:
Athletes Passed
2139
Passed By
511
Net Change
+1628
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7121
5K → 10K254150+104#7121#7017
10K → 15K25055+195#7017#6822
15K → 20K24641+205#6822#6617
20K → Half4416+28#6617#6589
Half → 25K20642+164#6589#6425
25K → 30K27371+202#6425#6223
30K → 20M12327+96#6223#6127
20M → 21M9648+48#6127#6079
21M → 35K709+61#6079#6018
35K → 23M13124+107#6018#5911
23M → 24M11511+104#5911#5807
24M → 40K1456+139#5807#5668
40K → 25.2M682+66#5668#5602
25.2M → Finish1189+109#5602#5493
TOTALS2139511+1628
📊

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