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BOSTON MARATHON 2025

Cynthia Scully

Bib: 21443•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Top 49%
Division (F50-54)
#0 / 1303
Top 47%
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
8:00/mi
24:52
↑ 97↓ 3451.5%
10K· 6.21 mi
7:51/mi
49:16
↑ 79↓ 1380.4%
15K· 9.32 mi
7:50/mi
1:13:35
↑ 67↓ 78
20K· 12.43 mi
7:59/mi
1:38:23
↑ 106↓ 860.1%
Half· 13.11 mi
7:55/mi
1:43:47
↑ 19↓ 370.5%
25K· 15.53 mi
8:29/mi
2:04:22
↑ 66↓ 880.2%
30K· 18.64 mi
9:20/mi
2:33:22
↑ 181↓ 1480.2%
20M
10:51/mi
2:48:06
↑ 64↓ 500.2%
21M
12:29/mi
3:00:35
↑ 106↓ 241.6%
35K· 21.75 mi
8:43/mi
3:07:06
↑ 17↓ 861.7%
23M
9:49/mi
3:19:24
↑ 23↓ 630.6%
24M
11:08/mi
3:30:32
↓ 821.3%
40K· 24.85 mi
10:37/mi
3:39:37
↓ 200.3%
25.2M
10:15/mi
3:43:09
↑ 13↓ 160.2%
Finish· 26.22 mi
9:13/mi
3:52:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:47
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time2:08:46
Pace9:49 /mi
📊Positive Split: 24.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:2224:528:0024:52
8:00
-
10K
6.21 mi11:43:4649:167:5624:24
7:51
-0:09
15K
9.32 mi12:08:051:13:357:5424:19
7:50
-0:01
20K
12.43 mi12:32:531:38:237:5524:48
7:59
+0:09
Half
13.11 mi12:38:171:43:477:555:24
7:55
-0:04
25K
15.53 mi12:58:522:04:228:0020:35
8:29
+0:34
30K
18.64 mi13:27:522:33:228:1429:00
9:20
+0:51
20M
20.00 mi13:42:362:48:068:2414:44
10:51
+1:31
21M
21.00 mi13:55:053:00:358:3612:29
12:29
+1:38
35K
21.75 mi14:01:363:07:068:366:31
8:43
-3:46
23M
23.00 mi14:13:543:19:248:4012:18
9:49
+1:06
24M
24.00 mi14:25:023:30:328:4611:08
11:08
+1:19
40K
24.85 mi14:34:073:39:378:509:05
10:37
-0:31
25.2M
25.20 mi14:37:393:43:098:513:32
10:15
-0:22
Finish
26.22 mi14:47:033:52:338:539:24
9:13
-1:02

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

7:50 /mi

Average Pace

8:53 /mi

Slowest Pace

12:29 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:22

53% of race

Time at Steady Pace

57:13

25% of race

Time at Slower Pace

50:58

22% of race

Average Pace: 8:52 /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 mi11:19:2224:528:0024:52
8:00
#16641
10K
6.21 mi11:43:4649:167:5624:24
7:51
#15943
15K
9.32 mi12:08:051:13:357:5424:19
7:50
#15452
20K
12.43 mi12:32:531:38:237:5524:48
7:59
#15251
Half
13.11 mi12:38:171:43:477:555:24
7:55
#15249
25K
15.53 mi12:58:522:04:228:0020:35
8:29
#15599
30K
18.64 mi13:27:522:33:228:1429:00
9:20
#16390
20M
20.00 mi13:42:362:48:068:2414:44
10:51
#17166
21M
21.00 mi13:55:053:00:358:3612:29
12:29
#18014
35K
21.75 mi14:01:363:07:068:366:31
8:43
#17957
23M
23.00 mi14:13:543:19:248:4012:18
9:49
#18103
24M
24.00 mi14:25:023:30:328:4611:08
11:08
#18595
40K
24.85 mi14:34:073:39:378:509:05
10:37
#18820
25.2M
25.20 mi14:37:393:43:098:513:32
10:15
#18813
Finish
26.22 mi14:47:033:52:338:539:24
9:13
#18859
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi166415544554414628(Top 51%)4379(Top 36%)4379(Top 336%)
10K6.21 mi3.10 mi15943+6985104+4405104+44015322(Top 54%)4742(Top 39%)4742(Top 364%)
15K9.32 mi3.11 mi15452+4914820+2844820+28414628(Top 51%)4379(Top 36%)4379(Top 336%)
20K12.43 mi3.11 mi15251+2014725+954725+9514817(Top 52%)4547(Top 37%)4547(Top 349%)
Half13.11 mi0.68 mi15249+24722+34722+315315(Top 54%)4812(Top 39%)4812(Top 369%)
25K15.53 mi2.42 mi15599-3504943-2214943-22117154(Top 60%)5951(Top 49%)5951(Top 457%)
30K18.64 mi3.11 mi16390-7915468-5255468-52519274(Top 68%)7270(Top 59%)7270(Top 558%)
20M20.00 mi1.36 mi17166-7765941-4735941-47323268(Top 82%)9563(Top 78%)9563(Top 734%)
21M21.00 mi1.00 mi18014-8486441-5006441-50024386(Top 86%)10226(Top 84%)10226(Top 785%)
35K21.75 mi0.75 mi17957+576422+196422+1916810(Top 59%)6234(Top 51%)6234(Top 478%)
23M23.00 mi1.25 mi18103-1466554-1326554-13219883(Top 70%)7987(Top 65%)7987(Top 613%)
24M24.00 mi1.00 mi18595-4926845-2916845-29124264(Top 85%)10249(Top 84%)10249(Top 787%)
40K24.85 mi0.85 mi18820-2256998-1536998-15322255(Top 78%)9336(Top 76%)9336(Top 717%)
25.2M25.20 mi0.35 mi18813+77009-117009-1118135(Top 64%)7210(Top 59%)7210(Top 553%)
Finish26.22 mi1.02 mi18859-467050-417050-4120071(Top 71%)8186(Top 67%)8186(Top 628%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

14628

Females

4379

F50-54

4379

5K→10K

3.1 - 6.2 mi

Top 54%
×5story building
+79ft-138ft

Overall

15322

Females

4742

F50-54

4742

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

14628

Females

4379

F50-54

4379

15K→20K

9.3 - 12.4 mi

Top 52%
×5story building
+106ft-86ft

Overall

14817

Females

4547

F50-54

4547

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15315

Females

4812

F50-54

4812

Half→25K

13.1 - 15.5 mi

Top 60%
×4story building
+66ft-88ft

Overall

17154

Females

5951

F50-54

5951

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

19274

Females

7270

F50-54

7270

30K→20M

18.6 - 20.0 mi

Top 82%
×5story building
+64ft-50ft

Overall

23268

Females

9563

F50-54

9563

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

24386

Females

10226

F50-54

10226

21M→35K

21.0 - 21.8 mi

Top 59%
×7story building
+17ft-86ft

Overall

16810

Females

6234

F50-54

6234

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

19883

Females

7987

F50-54

7987

23M→24M

23.0 - 24.0 mi

Top 85%
×6story building
+12ft-82ft

Overall

24264

Females

10249

F50-54

10249

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

22255

Females

9336

F50-54

9336

40K→25.2M

24.9 - 25.2 mi

Top 64%
×1story
+13ft-16ft

Overall

18135

Females

7210

F50-54

7210

25.2M→Finish

25.2 - 26.2 mi

Top 71%
×2story building
+22ft-21ft

Overall

20071

Females

8186

F50-54

8186

Passing Analysis

Category:
Athletes Passed
2089
Passed By
4307
Net Change
-2218
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16641
5K → 10K77678+698#16641#15943
10K → 15K52332+491#15943#15452
15K → 20K29695+201#15452#15251
20K → Half3836+2#15251#15249
Half → 25K87437-350#15249#15599
25K → 30K70861-791#15599#16390
30K → 20M16792-776#16390#17166
20M → 21M13861-848#17166#18014
21M → 35K8326+57#18014#17957
35K → 23M65211-146#17957#18103
23M → 24M17509-492#18103#18595
24M → 40K25250-225#18595#18820
40K → 25.2M3124+7#18820#18813
25.2M → Finish4995-46#18813#18859
TOTALS20894307-2218
📊

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