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BOSTON MARATHON 2025

Madeline Koelbl

Bib: 27667•F

MA

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:25/mi
29:15
↑ 97↓ 3451.5%
10K· 6.21 mi
8:49/mi
56:37
↑ 79↓ 1380.4%
15K· 9.32 mi
8:42/mi
1:23:39
↑ 67↓ 78
20K· 12.43 mi
8:48/mi
1:50:58
↑ 106↓ 860.1%
Half· 13.11 mi
8:39/mi
1:56:52
↑ 19↓ 370.5%
25K· 15.53 mi
8:59/mi
2:18:40
↑ 66↓ 880.2%
30K· 18.64 mi
9:41/mi
2:48:46
↑ 181↓ 1480.2%
20M
9:58/mi
3:02:19
↑ 64↓ 500.2%
21M
10:40/mi
3:12:59
↑ 106↓ 241.6%
35K· 21.75 mi
9:48/mi
3:20:19
↑ 17↓ 861.7%
23M
11:32/mi
3:34:45
↑ 23↓ 630.6%
24M
10:05/mi
3:44:50
↓ 821.3%
40K· 24.85 mi
10:04/mi
3:53:26
↓ 200.3%
25.2M
11:19/mi
3:57:20
↑ 13↓ 160.2%
Finish· 26.22 mi
9:28/mi
4:06:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:52
Pace8:55 /mi
2nd Half
Distance13.11 mi
Time2:10:07
Pace9:56 /mi
📊Positive Split: 11.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:3329:159:2529:15
9:25
-
10K
6.21 mi12:17:5556:379:0727:22
8:49
-0:36
15K
9.32 mi12:44:571:23:398:5827:02
8:42
-0:07
20K
12.43 mi13:12:161:50:588:5627:19
8:48
+0:06
Half
13.11 mi13:18:101:56:528:555:54
8:39
-0:09
25K
15.53 mi13:39:582:18:408:5621:48
8:59
+0:20
30K
18.64 mi14:10:042:48:469:0330:06
9:41
+0:42
20M
20.00 mi14:23:373:02:199:0713:33
9:58
+0:17
21M
21.00 mi14:34:173:12:599:1110:40
10:40
+0:42
35K
21.75 mi14:41:373:20:199:137:20
9:48
-0:52
23M
23.00 mi14:56:033:34:459:2014:26
11:32
+1:44
24M
24.00 mi15:06:083:44:509:2210:05
10:05
-1:27
40K
24.85 mi15:14:443:53:269:248:36
10:04
-0:01
25.2M
25.20 mi15:18:383:57:209:253:54
11:19
+1:15
Finish
26.22 mi15:28:174:06:599:269:39
9:28
-1:51

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

8:39 /mi

Average Pace

9:26 /mi

Slowest Pace

11:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:49:25

44% of race

Time at Steady Pace

1:48:34

44% of race

Time at Slower Pace

29:00

12% of race

Average Pace: 9:25 /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 mi11:50:3329:159:2529:15
9:25
#23956
10K
6.21 mi12:17:5556:379:0727:22
8:49
#22858
15K
9.32 mi12:44:571:23:398:5827:02
8:42
#22182
20K
12.43 mi13:12:161:50:588:5627:19
8:48
#21602
Half
13.11 mi13:18:101:56:528:555:54
8:39
#21514
25K
15.53 mi13:39:582:18:408:5621:48
8:59
#21235
30K
18.64 mi14:10:042:48:469:0330:06
9:41
#21122
20M
20.00 mi14:23:373:02:199:0713:33
9:58
#21105
21M
21.00 mi14:34:173:12:599:1110:40
10:40
#21077
35K
21.75 mi14:41:373:20:199:137:20
9:48
#21086
23M
23.00 mi14:56:033:34:459:2014:26
11:32
#21376
24M
24.00 mi15:06:083:44:509:2210:05
10:05
#21388
40K
24.85 mi15:14:443:53:269:248:36
10:04
#21357
25.2M
25.20 mi15:18:383:57:209:253:54
11:19
#21360
Finish
26.22 mi15:28:174:06:599:269:39
9:28
#21343
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi239569676967620513(Top 72%)7723(Top 63%)7723(Top 141%)
10K6.21 mi3.10 mi22858+10989074+6029074+60221449(Top 76%)8279(Top 68%)8279(Top 151%)
15K9.32 mi3.11 mi22182+6768692+3828692+38220513(Top 72%)7723(Top 63%)7723(Top 141%)
20K12.43 mi3.11 mi21602+5808381+3118381+31119911(Top 70%)7434(Top 61%)7434(Top 136%)
Half13.11 mi0.68 mi21514+888324+578324+5720124(Top 71%)7564(Top 62%)7564(Top 138%)
25K15.53 mi2.42 mi21235+2798172+1528172+15219869(Top 70%)7465(Top 61%)7465(Top 136%)
30K18.64 mi3.11 mi21122+1138153+198153+1920665(Top 73%)8027(Top 66%)8027(Top 147%)
20M20.00 mi1.36 mi21105+178168-158168-1520851(Top 73%)8275(Top 68%)8275(Top 151%)
21M21.00 mi1.00 mi21077+288168816820531(Top 72%)8204(Top 67%)8204(Top 150%)
35K21.75 mi0.75 mi21086-98183-158183-1521347(Top 75%)8693(Top 71%)8693(Top 159%)
23M23.00 mi1.25 mi21376-2908366-1838366-18324317(Top 86%)10252(Top 84%)10252(Top 187%)
24M24.00 mi1.00 mi21388-128386-208386-2021603(Top 76%)8912(Top 73%)8912(Top 163%)
40K24.85 mi0.85 mi21357+318394-88394-820661(Top 73%)8487(Top 69%)8487(Top 155%)
25.2M25.20 mi0.35 mi21360-38408-148408-1421574(Top 76%)8943(Top 73%)8943(Top 164%)
Finish26.22 mi1.02 mi21343+178411-38411-321080(Top 74%)8697(Top 71%)8697(Top 159%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

20513

Females

7723

F18-39

7723

5K→10K

3.1 - 6.2 mi

Top 76%
×5story building
+79ft-138ft

Overall

21449

Females

8279

F18-39

8279

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

20513

Females

7723

F18-39

7723

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

19911

Females

7434

F18-39

7434

20K→Half

12.4 - 13.1 mi

Top 71%
×2story building
+19ft-37ft

Overall

20124

Females

7564

F18-39

7564

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

19869

Females

7465

F18-39

7465

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

20665

Females

8027

F18-39

8027

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

20851

Females

8275

F18-39

8275

20M→21M

20.0 - 21.0 mi

Top 72%
×8story building
+106ft-24ft

Overall

20531

Females

8204

F18-39

8204

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

21347

Females

8693

F18-39

8693

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

24317

Females

10252

F18-39

10252

23M→24M

23.0 - 24.0 mi

Top 76%
×6story building
+12ft-82ft

Overall

21603

Females

8912

F18-39

8912

24M→40K

24.0 - 24.9 mi

Top 73%
×1story
+6ft-20ft

Overall

20661

Females

8487

F18-39

8487

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

21574

Females

8943

F18-39

8943

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2story building
+22ft-21ft

Overall

21080

Females

8697

F18-39

8697

Passing Analysis

Category:
Athletes Passed
3549
Passed By
936
Net Change
+2613
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23956
5K → 10K111012+1098#23956#22858
10K → 15K68812+676#22858#22182
15K → 20K59414+580#22182#21602
20K → Half913+88#21602#21514
Half → 25K31334+279#21514#21235
25K → 30K253140+113#21235#21122
30K → 20M11093+17#21122#21105
20M → 21M10577+28#21105#21077
21M → 35K5766-9#21077#21086
35K → 23M31321-290#21086#21376
23M → 24M5163-12#21376#21388
24M → 40K6837+31#21388#21357
40K → 25.2M2730-3#21357#21360
25.2M → Finish5134+17#21360#21343
TOTALS3549936+2613
📊

Passing Visuals

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