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BOSTON MARATHON 2025

Madeline Blizzard

Bib: 17766•F

SC

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
7:38/mi
23:43
↑ 97↓ 3451.5%
10K· 6.21 mi
7:37/mi
47:24
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:11:11
↑ 67↓ 78
20K· 12.43 mi
7:44/mi
1:35:13
↑ 106↓ 860.1%
Half· 13.11 mi
7:45/mi
1:40:30
↑ 19↓ 370.5%
25K· 15.53 mi
7:58/mi
1:59:49
↑ 66↓ 880.2%
30K· 18.64 mi
8:16/mi
2:25:29
↑ 181↓ 1480.2%
20M
8:31/mi
2:37:04
↑ 64↓ 500.2%
21M
9:09/mi
2:46:13
↑ 106↓ 241.6%
35K· 21.75 mi
12:51/mi
2:55:50
↑ 17↓ 861.7%
23M
21:17/mi
3:22:29
↑ 23↓ 630.6%
24M
8:38/mi
3:31:07
↓ 821.3%
40K· 24.85 mi
8:47/mi
3:38:38
↓ 200.3%
25.2M
12:46/mi
3:43:02
↑ 13↓ 160.2%
Finish· 26.22 mi
9:56/mi
3:53:09
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:40:30
Pace7:40 /mi
2nd Half
Distance13.11 mi
Time2:12:39
Pace10:07 /mi
📊Positive Split: 32.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2623:437:3823:43
7:38
-
10K
6.21 mi11:38:0747:247:3823:41
7:37
-0:01
15K
9.32 mi12:01:541:11:117:3823:47
7:39
+0:02
20K
12.43 mi12:25:561:35:137:4024:02
7:44
+0:05
Half
13.11 mi12:31:131:40:307:405:17
7:45
+0:01
25K
15.53 mi12:50:321:59:497:4319:19
7:58
+0:13
30K
18.64 mi13:16:122:25:297:4825:40
8:16
+0:18
20M
20.00 mi13:27:472:37:047:5111:35
8:31
+0:15
21M
21.00 mi13:36:562:46:137:559:09
9:09
+0:38
35K
21.75 mi13:46:332:55:508:059:37
12:51
+3:42
23M
23.00 mi14:13:123:22:298:4826:39
21:17
+8:26
24M
24.00 mi14:21:503:31:078:488:38
8:38
-12:39
40K
24.85 mi14:29:213:38:388:487:31
8:47
+0:09
25.2M
25.20 mi14:33:453:43:028:514:24
12:46
+3:59
Finish
26.22 mi14:43:523:53:098:5410:07
9:56
-2:50

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

7:37 /mi

Average Pace

8:54 /mi

Slowest Pace

21:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:12:29

83% of race

Time at Slower Pace

40:40

17% of race

Average Pace: 8:54 /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 mi11:14:2623:437:3823:43
7:38
#13404
10K
6.21 mi11:38:0747:247:3823:41
7:37
#13308
15K
9.32 mi12:01:541:11:117:3823:47
7:39
#13212
20K
12.43 mi12:25:561:35:137:4024:02
7:44
#13033
Half
13.11 mi12:31:131:40:307:405:17
7:45
#13072
25K
15.53 mi12:50:321:59:497:4319:19
7:58
#13132
30K
18.64 mi13:16:122:25:297:4825:40
8:16
#13130
20M
20.00 mi13:27:472:37:047:5111:35
8:31
#13160
21M
21.00 mi13:36:562:46:137:559:09
9:09
#13211
35K
21.75 mi13:46:332:55:508:059:37
12:51
#14470
23M
23.00 mi14:13:123:22:298:4826:39
21:17
#18894
24M
24.00 mi14:21:503:31:078:488:38
8:38
#18753
40K
24.85 mi14:29:213:38:388:487:31
8:47
#18594
25.2M
25.20 mi14:33:453:43:028:514:24
12:46
#18787
Finish
26.22 mi14:43:523:53:098:5410:07
9:56
#18969
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi134043554355413115(Top 46%)3517(Top 29%)3517(Top 64%)
10K6.21 mi3.10 mi13308+963535+193535+1913253(Top 47%)3530(Top 29%)3530(Top 65%)
15K9.32 mi3.11 mi13212+963522+133522+1313115(Top 46%)3517(Top 29%)3517(Top 64%)
20K12.43 mi3.11 mi13033+1793469+533469+5312737(Top 45%)3411(Top 28%)3411(Top 62%)
Half13.11 mi0.68 mi13072-393488-193488-1913872(Top 49%)4011(Top 33%)4011(Top 73%)
25K15.53 mi2.42 mi13132-603556-683556-6813654(Top 48%)4040(Top 33%)4040(Top 74%)
30K18.64 mi3.11 mi13130+23630-743630-7413262(Top 47%)3983(Top 33%)3983(Top 73%)
20M20.00 mi1.36 mi13160-303668-383668-3813973(Top 49%)4508(Top 37%)4508(Top 82%)
21M21.00 mi1.00 mi13211-513731-633731-6314395(Top 51%)4849(Top 40%)4849(Top 89%)
35K21.75 mi0.75 mi14470-12594436-7054436-70526838(Top 94%)11510(Top 94%)11510(Top 210%)
23M23.00 mi1.25 mi18894-44246991-25556991-255528382(Top 100%)12223(Top 100%)12223(Top 223%)
24M24.00 mi1.00 mi18753+1416935+566935+5615395(Top 54%)5606(Top 46%)5606(Top 103%)
40K24.85 mi0.85 mi18594+1596873+626873+6215197(Top 54%)5641(Top 46%)5641(Top 103%)
25.2M25.20 mi0.35 mi18787-1936994-1216994-12124685(Top 87%)10503(Top 86%)10503(Top 192%)
Finish26.22 mi1.02 mi18969-1827110-1167110-11622708(Top 80%)9520(Top 78%)9520(Top 174%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13115

Females

3517

F18-39

3517

5K→10K

3.1 - 6.2 mi

Top 47%
×5story building
+79ft-138ft

Overall

13253

Females

3530

F18-39

3530

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13115

Females

3517

F18-39

3517

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12737

Females

3411

F18-39

3411

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13872

Females

4011

F18-39

4011

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

13654

Females

4040

F18-39

4040

25K→30K

15.5 - 18.6 mi

Top 47%
×9story building
+181ft-148ft

Overall

13262

Females

3983

F18-39

3983

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

13973

Females

4508

F18-39

4508

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

14395

Females

4849

F18-39

4849

21M→35K

21.0 - 21.8 mi

Top 94%
×7story building
+17ft-86ft

Overall

26838

Females

11510

F18-39

11510

35K→23M

21.8 - 23.0 mi

Top 100%
×5story building
+23ft-63ft

Overall

28382

Females

12223

F18-39

12223

23M→24M

23.0 - 24.0 mi

Top 54%
×6story building
+12ft-82ft

Overall

15395

Females

5606

F18-39

5606

24M→40K

24.0 - 24.9 mi

Top 54%
×1story
+6ft-20ft

Overall

15197

Females

5641

F18-39

5641

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24685

Females

10503

F18-39

10503

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

22708

Females

9520

F18-39

9520

Passing Analysis

Category:
Athletes Passed
1827
Passed By
7392
Net Change
-5565
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13404
5K → 10K333237+96#13404#13308
10K → 15K241145+96#13308#13212
15K → 20K296117+179#13212#13033
20K → Half2766-39#13033#13072
Half → 25K137197-60#13072#13132
25K → 30K258256+2#13132#13130
30K → 20M102132-30#13130#13160
20M → 21M85136-51#13160#13211
21M → 35K11260-1259#13211#14470
35K → 23M34427-4424#14470#18894
23M → 24M15312+141#18894#18753
24M → 40K1689+159#18753#18594
40K → 25.2M5198-193#18594#18787
25.2M → Finish18200-182#18787#18969
TOTALS18277392-5565
📊

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