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BOSTON MARATHON 2025

Kansas Mackenzie

BC

Bib: 13519 F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 43%
Gender (Female)
#0 / 12228
Top 28%
Division (F18-39)
#0 / 5469
Top 46%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
7:43/mi
23:58
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:44/mi
47:59
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:50/mi
1:12:20
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:00/mi
1:37:10
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:52/mi
1:42:32
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:03/mi
2:02:03
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:03/mi
2:27:03
↑ 181↓ 1480.2%
138 ft elev
20M
8:19/mi
2:38:21
↑ 64↓ 500.2%
148 ft elev
21M
8:08/mi
2:46:29
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:49/mi
2:52:20
↑ 17↓ 861.7%
156 ft elev
23M
8:06/mi
3:02:29
↑ 23↓ 630.6%
116 ft elev
24M
8:03/mi
3:10:32
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:00/mi
3:17:22
↓ 200.3%
20 ft elev
25.2M
7:53/mi
3:20:05
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:58/mi
3:27:11
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:32
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:44:39
Pace7:59 /mi
📊Positive Split: 2.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:58:4923:587:4323:58
7:43
-
10K
6.21 mi11:22:5047:597:4324:01
7:44
+0:01
15K
9.32 mi11:47:111:12:207:4624:21
7:50
+0:06
20K
12.43 mi12:12:011:37:107:4924:50
8:00
+0:10
Half
13.11 mi12:17:231:42:327:495:22
7:52
-0:08
25K
15.53 mi12:36:542:02:037:5119:31
8:03
+0:11
30K
18.64 mi13:01:542:27:037:5325:00
8:03
0:00
20M
20.00 mi13:13:122:38:217:5511:18
8:19
+0:16
21M
21.00 mi13:21:202:46:297:568:08
8:08
-0:11
35K
21.75 mi13:27:112:52:207:555:51
7:49
-0:19
23M
23.00 mi13:37:203:02:297:5610:09
8:06
+0:17
24M
24.00 mi13:45:233:10:327:568:03
8:03
-0:03
40K
24.85 mi13:52:133:17:227:566:50
8:00
-0:03
25.2M
25.20 mi13:54:563:20:057:562:43
7:53
-0:07
Finish
26.22 mi14:02:023:27:117:547:06
6:58
-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

6:58 /mi

Average Pace

7:54 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

7:06

3% of race

Time at Steady Pace

3:08:47

91% of race

Time at Slower Pace

11:18

5% of race

Average Pace: 7:54 /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 mi10:58:4923:587:4323:58
7:43
#14101
10K
6.21 mi11:22:5047:597:4324:01
7:44
#14090
15K
9.32 mi11:47:111:12:207:4624:21
7:50
#14300
20K
12.43 mi12:12:011:37:107:4924:50
8:00
#14406
Half
13.11 mi12:17:231:42:327:495:22
7:52
#14407
25K
15.53 mi12:36:542:02:037:5119:31
8:03
#14358
30K
18.64 mi13:01:542:27:037:5325:00
8:03
#13788
20M
20.00 mi13:13:122:38:217:5511:18
8:19
#13655
21M
21.00 mi13:21:202:46:297:568:08
8:08
#13299
35K
21.75 mi13:27:112:52:207:555:51
7:49
#13199
23M
23.00 mi13:37:203:02:297:5610:09
8:06
#13031
24M
24.00 mi13:45:233:10:327:568:03
8:03
#12958
40K
24.85 mi13:52:133:17:227:566:50
8:00
#12827
25.2M
25.20 mi13:54:563:20:057:562:43
7:53
#12672
Finish
26.22 mi14:02:023:27:117:547:06
6:58
#12329
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi14101397239721469944134413
10K6.21 mi3.10 mi14090+113991-193991-191417740654065
15K9.32 mi3.11 mi14300-2104134-1434134-1431469944134413
20K12.43 mi3.11 mi14406-1064239-1054239-1051488545784578
Half13.11 mi0.68 mi14407-14236+34236+31481044884488
25K15.53 mi2.42 mi14358+494248-124248-121426643424342
30K18.64 mi3.11 mi13788+5703986+2623986+2621173331573157
20M20.00 mi1.36 mi13655+1333937+493937+491260137483748
21M21.00 mi1.00 mi13299+3563773+1643773+164820918241824
35K21.75 mi0.75 mi13199+1003738+353738+351102431223122
23M23.00 mi1.25 mi13031+1683685+533685+531081531383138
24M24.00 mi1.00 mi12958+733681+43681+41161136263626
40K24.85 mi0.85 mi12827+1313635+463635+461018830283028
25.2M25.20 mi0.35 mi12672+1553560+753560+75543010601060
Finish26.22 mi1.02 mi12329+3433424+1363424+136557311021102

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

14699

Females

4413

F18-39

4413

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

14177

Females

4065

F18-39

4065

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

14699

Females

4413

F18-39

4413

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14885

Females

4578

F18-39

4578

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

14810

Females

4488

F18-39

4488

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

14266

Females

4342

F18-39

4342

25K→30K

15.5 - 18.6 mi

Top 41%
×9story building
+181ft-148ft

Overall

11733

Females

3157

F18-39

3157

30K→20M

18.6 - 20.0 mi

Top 44%
×5story building
+64ft-50ft

Overall

12601

Females

3748

F18-39

3748

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

8209

Females

1824

F18-39

1824

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

11024

Females

3122

F18-39

3122

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10815

Females

3138

F18-39

3138

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

11611

Females

3626

F18-39

3626

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10188

Females

3028

F18-39

3028

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5430

Females

1060

F18-39

1060

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2story building
+22ft-21ft

Overall

5573

Females

1102

F18-39

1102

Passing Analysis

Category:
Athletes Passed
3012
Passed By
1240
Net Change
+1772
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14101
5K → 10K266255+11#14101#14090
10K → 15K134344-210#14090#14300
15K → 20K181287-106#14300#14406
20K → Half3637-1#14406#14407
Half → 25K196147+49#14407#14358
25K → 30K59323+570#14358#13788
30K → 20M18350+133#13788#13655
20M → 21M3571+356#13655#13299
21M → 35K11313+100#13299#13199
35K → 23M19426+168#13199#13031
23M → 24M11542+73#13031#12958
24M → 40K14312+131#12958#12827
40K → 25.2M1561+155#12827#12672
25.2M → Finish3452+343#12672#12329
TOTALS30121240+1772

Passing Charts

Category:
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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