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BOSTON MARATHON 2025

Alison Heintz

Bib: 21985•F

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 48%
Division (F45-49)
#0 / 1813
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:40
Rank: #20369
Start → 5K
26:40 | 8:35/mi
10K· 6.21 mi
52:46
Rank: #19793 (+576)
5K → 10K
26:06 | 8:24/mi
15K· 9.32 mi
1:18:58
Rank: #19499 (+294)
10K → 15K
26:12 | 8:26/mi
20K· 12.43 mi
1:45:29
Rank: #19193 (+306)
15K → 20K
26:31 | 8:32/mi
Half· 13.11 mi
1:51:14
Rank: #19165 (+28)
20K → Half
5:45 | 8:26/mi
25K· 15.53 mi
2:12:20
Rank: #19028 (+137)
Half → 25K
21:06 | 8:42/mi
30K· 18.64 mi
2:40:44
Rank: #18884 (+144)
25K → 30K
28:24 | 9:08/mi
20M
2:53:17
Rank: #18819 (+65)
30K → 20M
12:33 | 9:14/mi
21M
3:03:10
Rank: #18745 (+74)
20M → 21M
9:53 | 9:53/mi
35K· 21.75 mi
3:09:57
Rank: #18733 (+12)
21M → 35K
6:47 | 9:04/mi
23M
3:21:40
Rank: #18687 (+46)
35K → 23M
11:43 | 9:21/mi
24M
3:30:56
Rank: #18703 (-16)
23M → 24M
9:16 | 9:16/mi
40K· 24.85 mi
3:38:56
Rank: #18669 (+34)
24M → 40K
8:00 | 9:21/mi
25.2M
3:42:24
Rank: #18641 (+28)
40K → 25.2M
3:28 | 10:03/mi
Finish· 26.22 mi
3:51:32
Rank: #18650 (-9)
25.2M → Finish
9:08 | 8:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:51:14
Pace8:29 /mi
2nd Half
Distance13.11 mi
Time2:00:18
Pace9:11 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:2526:408:3526:40
8:35
-
10K
6.21 mi11:48:3152:468:3026:06
8:24
-0:11
15K
9.32 mi12:14:431:18:588:2826:12
8:26
+0:02
20K
12.43 mi12:41:141:45:298:2926:31
8:32
+0:06
Half
13.11 mi12:46:591:51:148:295:45
8:26
-0:06
25K
15.53 mi13:08:052:12:208:3121:06
8:42
+0:16
30K
18.64 mi13:36:292:40:448:3728:24
9:08
+0:26
20M
20.00 mi13:49:022:53:178:4012:33
9:14
+0:06
21M
21.00 mi13:58:553:03:108:439:53
9:53
+0:39
35K
21.75 mi14:05:423:09:578:446:47
9:04
-0:49
23M
23.00 mi14:17:253:21:408:4611:43
9:21
+0:17
24M
24.00 mi14:26:413:30:568:479:16
9:16
-0:05
40K
24.85 mi14:34:413:38:568:498:00
9:21
+0:05
25.2M
25.20 mi14:38:093:42:248:503:28
10:03
+0:42
Finish
26.22 mi14:47:173:51:328:509:08
8:58
-1:05

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

8:24 /mi

Average Pace

8:50 /mi

Slowest Pace

10:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:09:12

82% of race

Time at Steady Pace

38:52

17% of race

Time at Slower Pace

3:28

1% of race

Average Pace: 8:50 /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 mi11:22:2526:408:3526:40
8:35
#20369
10K
6.21 mi11:48:3152:468:3026:06
8:24
#19793
15K
9.32 mi12:14:431:18:588:2826:12
8:26
#19499
20K
12.43 mi12:41:141:45:298:2926:31
8:32
#19193
Half
13.11 mi12:46:591:51:148:295:45
8:26
#19165
25K
15.53 mi13:08:052:12:208:3121:06
8:42
#19028
30K
18.64 mi13:36:292:40:448:3728:24
9:08
#18884
20M
20.00 mi13:49:022:53:178:4012:33
9:14
#18819
21M
21.00 mi13:58:553:03:108:439:53
9:53
#18745
35K
21.75 mi14:05:423:09:578:446:47
9:04
#18733
23M
23.00 mi14:17:253:21:408:4611:43
9:21
#18687
24M
24.00 mi14:26:413:30:568:479:16
9:16
#18703
40K
24.85 mi14:34:413:38:568:498:00
9:21
#18669
25.2M
25.20 mi14:38:093:42:248:503:28
10:03
#18641
Finish
26.22 mi14:47:173:51:328:509:08
8:58
#18650
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi203697727772718925(Top 67%)6857(Top 56%)6857(Top 378%)
10K6.21 mi3.10 mi19793+5767351+3767351+37619209(Top 68%)7005(Top 57%)7005(Top 386%)
15K9.32 mi3.11 mi19499+2947179+1727179+17218925(Top 67%)6857(Top 56%)6857(Top 378%)
20K12.43 mi3.11 mi19193+3067014+1657014+16518480(Top 65%)6619(Top 54%)6619(Top 365%)
Half13.11 mi0.68 mi19165+287002+127002+1218795(Top 66%)6789(Top 56%)6789(Top 374%)
25K15.53 mi2.42 mi19028+1376933+696933+6918416(Top 65%)6664(Top 54%)6664(Top 368%)
30K18.64 mi3.11 mi18884+1446877+566877+5618367(Top 65%)6770(Top 55%)6770(Top 373%)
20M20.00 mi1.36 mi18819+656865+126865+1217971(Top 63%)6700(Top 55%)6700(Top 370%)
21M21.00 mi1.00 mi18745+746860+56860+517858(Top 63%)6718(Top 55%)6718(Top 371%)
35K21.75 mi0.75 mi18733+126869-96869-918587(Top 65%)7241(Top 59%)7241(Top 399%)
23M23.00 mi1.25 mi18687+466878-96878-918062(Top 64%)7011(Top 57%)7011(Top 387%)
24M24.00 mi1.00 mi18703-166906-286906-2818684(Top 66%)7379(Top 60%)7379(Top 407%)
40K24.85 mi0.85 mi18669+346913-76913-718123(Top 64%)7181(Top 59%)7181(Top 396%)
25.2M25.20 mi0.35 mi18641+286915-26915-217309(Top 61%)6759(Top 55%)6759(Top 373%)
Finish26.22 mi1.02 mi18650-96929-146929-1418865(Top 66%)7525(Top 62%)7525(Top 415%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21stories
+97ft-345ft

Overall

18925

Females

6857

F45-49

6857

5K→10K

3.1 - 6.2 mi

Top 68%
×5stories
+79ft-138ft

Overall

19209

Females

7005

F45-49

7005

10K→15K

6.2 - 9.3 mi

Top 67%
×3stories
+67ft-78ft

Overall

18925

Females

6857

F45-49

6857

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

18480

Females

6619

F45-49

6619

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

18795

Females

6789

F45-49

6789

Half→25K

13.1 - 15.5 mi

Top 65%
×4stories
+66ft-88ft

Overall

18416

Females

6664

F45-49

6664

25K→30K

15.5 - 18.6 mi

Top 65%
×9stories
+181ft-148ft

Overall

18367

Females

6770

F45-49

6770

30K→20M

18.6 - 20.0 mi

Top 63%
×5stories
+64ft-50ft

Overall

17971

Females

6700

F45-49

6700

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

17858

Females

6718

F45-49

6718

21M→35K

21.0 - 21.8 mi

Top 65%
×7stories
+17ft-86ft

Overall

18587

Females

7241

F45-49

7241

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18062

Females

7011

F45-49

7011

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

18684

Females

7379

F45-49

7379

24M→40K

24.0 - 24.9 mi

Top 64%
×1story
+6ft-20ft

Overall

18123

Females

7181

F45-49

7181

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

17309

Females

6759

F45-49

6759

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2stories
+22ft-21ft

Overall

18865

Females

7525

F45-49

7525

Passing Analysis

Category:
Athletes Passed
2695
Passed By
976
Net Change
+1719
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20369
5K → 10K683107+576#20369#19793
10K → 15K36268+294#19793#19499
15K → 20K36054+306#19499#19193
20K → Half5123+28#19193#19165
Half → 25K22992+137#19165#19028
25K → 30K296152+144#19028#18884
30K → 20M13469+65#18884#18819
20M → 21M14268+74#18819#18745
21M → 35K5745+12#18745#18733
35K → 23M12983+46#18733#18687
23M → 24M6076-16#18687#18703
24M → 40K8652+34#18703#18669
40K → 25.2M5224+28#18669#18641
25.2M → Finish5463-9#18641#18650
TOTALS2695976+1719
📊

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