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BOSTON MARATHON 2025

Debbie Stemmerman

Bib: 23615•F

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F55-59)
#0 / 994
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:03
Rank: #19233
Start → 5K
26:03 | 8:23/mi
10K· 6.21 mi
51:58
Rank: #19027 (+206)
5K → 10K
25:55 | 8:21/mi
15K· 9.32 mi
1:21:20
Rank: #20894 (-1867)
10K → 15K
29:22 | 9:27/mi
20K· 12.43 mi
1:52:00
Rank: #21992 (-1098)
15K → 20K
30:40 | 9:52/mi
Half· 13.11 mi
1:58:42
Rank: #22159 (-167)
20K → Half
6:42 | 9:49/mi
25K· 15.53 mi
2:21:37
Rank: #22081 (+78)
Half → 25K
22:55 | 9:27/mi
30K· 18.64 mi
2:54:48
Rank: #22420 (-339)
25K → 30K
33:11 | 10:41/mi
20M
3:08:46
Rank: #22371 (+49)
30K → 20M
13:58 | 10:17/mi
21M
3:19:57
Rank: #22317 (+54)
20M → 21M
11:11 | 11:11/mi
35K· 21.75 mi
3:27:22
Rank: #22291 (+26)
21M → 35K
7:25 | 9:55/mi
23M
3:39:50
Rank: #22168 (+123)
35K → 23M
12:28 | 9:57/mi
24M
3:50:00
Rank: #22134 (+34)
23M → 24M
10:10 | 10:10/mi
40K· 24.85 mi
3:58:50
Rank: #22109 (+25)
24M → 40K
8:50 | 10:20/mi
25.2M
4:02:34
Rank: #22066 (+43)
40K → 25.2M
3:44 | 10:50/mi
Finish· 26.22 mi
4:12:09
Rank: #22012 (+54)
25.2M → Finish
9:35 | 9:24/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:42
Pace9:03 /mi
2nd Half
Distance13.11 mi
Time2:13:27
Pace10:11 /mi
📊Positive Split: 12.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:0226:038:2326:03
8:23
-
10K
6.21 mi11:49:5751:588:2225:55
8:21
-0:02
15K
9.32 mi12:19:191:21:208:4429:22
9:27
+1:06
20K
12.43 mi12:49:591:52:009:0130:40
9:52
+0:25
Half
13.11 mi12:56:411:58:429:036:42
9:49
-0:03
25K
15.53 mi13:19:362:21:379:0722:55
9:27
-0:22
30K
18.64 mi13:52:472:54:489:2333:11
10:41
+1:14
20M
20.00 mi14:06:453:08:469:2613:58
10:17
-0:24
21M
21.00 mi14:17:563:19:579:3111:11
11:11
+0:54
35K
21.75 mi14:25:213:27:229:327:25
9:55
-1:16
23M
23.00 mi14:37:493:39:509:3312:28
9:57
+0:02
24M
24.00 mi14:47:593:50:009:3510:10
10:10
+0:13
40K
24.85 mi14:56:493:58:509:378:50
10:20
+0:10
25.2M
25.20 mi15:00:334:02:349:383:44
10:50
+0:30
Finish
26.22 mi15:10:084:12:099:379:35
9:24
-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

9:37 /mi

Slowest Pace

11:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:50

45% of race

Time at Steady Pace

1:21:23

32% of race

Time at Slower Pace

56:56

23% of race

Average Pace: 9:37 /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 mi11:24:0226:038:2326:03
8:23
#19233
10K
6.21 mi11:49:5751:588:2225:55
8:21
#19027
15K
9.32 mi12:19:191:21:208:4429:22
9:27
#20894
20K
12.43 mi12:49:591:52:009:0130:40
9:52
#21992
Half
13.11 mi12:56:411:58:429:036:42
9:49
#22159
25K
15.53 mi13:19:362:21:379:0722:55
9:27
#22081
30K
18.64 mi13:52:472:54:489:2333:11
10:41
#22420
20M
20.00 mi14:06:453:08:469:2613:58
10:17
#22371
21M
21.00 mi14:17:563:19:579:3111:11
11:11
#22317
35K
21.75 mi14:25:213:27:229:327:25
9:55
#22291
23M
23.00 mi14:37:493:39:509:3312:28
9:57
#22168
24M
24.00 mi14:47:593:50:009:3510:10
10:10
#22134
40K
24.85 mi14:56:493:58:509:378:50
10:20
#22109
25.2M
25.20 mi15:00:334:02:349:383:44
10:50
#22066
Finish
26.22 mi15:10:084:12:099:379:35
9:24
#22012
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi192337046704623607(Top 83%)9439(Top 77%)9439(Top 950%)
10K6.21 mi3.10 mi19027+2066922+1246922+12418840(Top 66%)6790(Top 56%)6790(Top 683%)
15K9.32 mi3.11 mi20894-18677986-10647986-106423607(Top 83%)9439(Top 77%)9439(Top 950%)
20K12.43 mi3.11 mi21992-10988596-6108596-61023949(Top 84%)9675(Top 79%)9675(Top 973%)
Half13.11 mi0.68 mi22159-1678684-888684-8824430(Top 86%)9951(Top 81%)9951(Top 1001%)
25K15.53 mi2.42 mi22081+788651+338651+3321714(Top 76%)8491(Top 69%)8491(Top 854%)
30K18.64 mi3.11 mi22420-3398866-2158866-21523350(Top 82%)9525(Top 78%)9525(Top 958%)
20M20.00 mi1.36 mi22371+498860+68860+621807(Top 77%)8792(Top 72%)8792(Top 885%)
21M21.00 mi1.00 mi22317+548844+168844+1621871(Top 77%)8901(Top 73%)8901(Top 895%)
35K21.75 mi0.75 mi22291+268842+28842+221675(Top 76%)8862(Top 72%)8862(Top 892%)
23M23.00 mi1.25 mi22168+1238815+278815+2720361(Top 72%)8232(Top 67%)8232(Top 828%)
24M24.00 mi1.00 mi22134+348811+48811+421850(Top 77%)9062(Top 74%)9062(Top 912%)
40K24.85 mi0.85 mi22109+258819-88819-821486(Top 76%)8920(Top 73%)8920(Top 897%)
25.2M25.20 mi0.35 mi22066+438801+188801+1820166(Top 71%)8256(Top 68%)8256(Top 831%)
Finish26.22 mi1.02 mi22012+548784+178784+1720857(Top 73%)8592(Top 70%)8592(Top 864%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21stories
+97ft-345ft

Overall

23607

Females

9439

F55-59

9439

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

18840

Females

6790

F55-59

6790

10K→15K

6.2 - 9.3 mi

Top 83%
×3stories
+67ft-78ft

Overall

23607

Females

9439

F55-59

9439

15K→20K

9.3 - 12.4 mi

Top 84%
×5stories
+106ft-86ft

Overall

23949

Females

9675

F55-59

9675

20K→Half

12.4 - 13.1 mi

Top 86%
×2stories
+19ft-37ft

Overall

24430

Females

9951

F55-59

9951

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

21714

Females

8491

F55-59

8491

25K→30K

15.5 - 18.6 mi

Top 82%
×9stories
+181ft-148ft

Overall

23350

Females

9525

F55-59

9525

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

21807

Females

8792

F55-59

8792

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

21871

Females

8901

F55-59

8901

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

21675

Females

8862

F55-59

8862

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

20361

Females

8232

F55-59

8232

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

21850

Females

9062

F55-59

9062

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

21486

Females

8920

F55-59

8920

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

20166

Females

8256

F55-59

8256

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

20857

Females

8592

F55-59

8592

Passing Analysis

Category:
Athletes Passed
1357
Passed By
4136
Net Change
-2779
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19233
5K → 10K378172+206#19233#19027
10K → 15K141881-1867#19027#20894
15K → 20K311129-1098#20894#21992
20K → Half5172-167#21992#22159
Half → 25K186108+78#22159#22081
25K → 30K101440-339#22081#22420
30K → 20M10051+49#22420#22371
20M → 21M10248+54#22371#22317
21M → 35K4923+26#22317#22291
35K → 23M14320+123#22291#22168
23M → 24M5622+34#22168#22134
24M → 40K5934+25#22134#22109
40K → 25.2M518+43#22109#22066
25.2M → Finish8228+54#22066#22012
TOTALS13574136-2779
📊

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