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BOSTON MARATHON 2025

Caitlin Brincklow

Bib: 28011•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
10:13/mi
31:43
↑ 97↓ 3451.5%
10K· 6.21 mi
10:03/mi
1:02:57
↑ 79↓ 1380.4%
15K· 9.32 mi
9:54/mi
1:33:44
↑ 67↓ 78
20K· 12.43 mi
10:36/mi
2:06:41
↑ 106↓ 860.1%
Half· 13.11 mi
10:33/mi
2:13:53
↑ 19↓ 370.5%
25K· 15.53 mi
11:36/mi
2:42:01
↑ 66↓ 880.2%
30K· 18.64 mi
11:18/mi
3:17:06
↑ 181↓ 1480.2%
20M
12:14/mi
3:33:44
↑ 64↓ 500.2%
21M
12:02/mi
3:45:46
↑ 106↓ 241.6%
35K· 21.75 mi
12:18/mi
3:54:58
↑ 17↓ 861.7%
23M
11:20/mi
4:09:09
↑ 23↓ 630.6%
24M
11:08/mi
4:20:17
↓ 821.3%
40K· 24.85 mi
11:48/mi
4:30:22
↓ 200.3%
25.2M
13:00/mi
4:34:51
↑ 13↓ 160.2%
Finish· 26.22 mi
10:16/mi
4:45:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:13:53
Pace10:13 /mi
2nd Half
Distance13.11 mi
Time2:31:26
Pace11:33 /mi
📊Positive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:4631:4310:1331:43
10:13
-
10K
6.21 mi12:24:001:02:5710:0831:14
10:03
-0:10
15K
9.32 mi12:54:471:33:4410:0330:47
9:54
-0:09
20K
12.43 mi13:27:442:06:4110:1232:57
10:36
+0:42
Half
13.11 mi13:34:562:13:5310:137:12
10:33
-0:03
25K
15.53 mi14:03:042:42:0110:2628:08
11:36
+1:03
30K
18.64 mi14:38:093:17:0610:3435:05
11:18
-0:18
20M
20.00 mi14:54:473:33:4410:4116:38
12:14
+0:56
21M
21.00 mi15:06:493:45:4610:4512:02
12:02
-0:12
35K
21.75 mi15:16:013:54:5810:489:12
12:18
+0:16
23M
23.00 mi15:30:124:09:0910:5014:11
11:20
-0:58
24M
24.00 mi15:41:204:20:1710:5111:08
11:08
-0:12
40K
24.85 mi15:51:254:30:2210:5310:05
11:48
+0:40
25.2M
25.20 mi15:55:544:34:5110:544:29
13:00
+1:12
Finish
26.22 mi16:06:224:45:1910:5310:28
10:16
-2:44

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

9:54 /mi

Average Pace

10:53 /mi

Slowest Pace

13:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:24:21

51% of race

Time at Steady Pace

1:28:32

31% of race

Time at Slower Pace

52:26

18% of race

Average Pace: 10:53 /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 mi11:52:4631:4310:1331:43
10:13
#26069
10K
6.21 mi12:24:001:02:5710:0831:14
10:03
#25718
15K
9.32 mi12:54:471:33:4410:0330:47
9:54
#25432
20K
12.43 mi13:27:442:06:4110:1232:57
10:36
#25422
Half
13.11 mi13:34:562:13:5310:137:12
10:33
#25434
25K
15.53 mi14:03:042:42:0110:2628:08
11:36
#25574
30K
18.64 mi14:38:093:17:0610:3435:05
11:18
#25365
20M
20.00 mi14:54:473:33:4410:4116:38
12:14
#25396
21M
21.00 mi15:06:493:45:4610:4512:02
12:02
#25310
35K
21.75 mi15:16:013:54:5810:489:12
12:18
#25343
23M
23.00 mi15:30:124:09:0910:5014:11
11:20
#25286
24M
24.00 mi15:41:204:20:1710:5111:08
11:08
#25239
40K
24.85 mi15:51:254:30:2210:5310:05
11:48
#25233
25.2M
25.20 mi15:55:544:34:5110:544:29
13:00
#25233
Finish
26.22 mi16:06:224:45:1910:5310:28
10:16
#25205
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi26069107981079824798(Top 87%)10108(Top 83%)10108(Top 185%)
10K6.21 mi3.10 mi25718+35110611+18710611+18725418(Top 89%)10471(Top 86%)10471(Top 191%)
15K9.32 mi3.11 mi25432+28610459+15210459+15224798(Top 87%)10108(Top 83%)10108(Top 185%)
20K12.43 mi3.11 mi25422+1010470-1110470-1125364(Top 89%)10460(Top 86%)10460(Top 191%)
Half13.11 mi0.68 mi25434-1210475-510475-525856(Top 91%)10744(Top 88%)10744(Top 196%)
25K15.53 mi2.42 mi25574-14010557-8210557-8225972(Top 91%)10849(Top 89%)10849(Top 198%)
30K18.64 mi3.11 mi25365+20910484+7310484+7324532(Top 86%)10148(Top 83%)10148(Top 186%)
20M20.00 mi1.36 mi25396-3110513-2910513-2925579(Top 90%)10791(Top 88%)10791(Top 197%)
21M21.00 mi1.00 mi25310+8610476+3710476+3723638(Top 83%)9837(Top 80%)9837(Top 180%)
35K21.75 mi0.75 mi25343-3310513-3710513-3726231(Top 92%)11206(Top 92%)11206(Top 205%)
23M23.00 mi1.25 mi25286+5710485+2810485+2823925(Top 84%)10068(Top 82%)10068(Top 184%)
24M24.00 mi1.00 mi25239+4710472+1310472+1324240(Top 85%)10243(Top 84%)10243(Top 187%)
40K24.85 mi0.85 mi25233+610476-410476-424613(Top 87%)10485(Top 86%)10485(Top 192%)
25.2M25.20 mi0.35 mi2523310479-310479-324999(Top 88%)10685(Top 87%)10685(Top 195%)
Finish26.22 mi1.02 mi25205+2810473+610473+623701(Top 83%)10028(Top 82%)10028(Top 183%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21story building
+97ft-345ft

Overall

24798

Females

10108

F18-39

10108

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

25418

Females

10471

F18-39

10471

10K→15K

6.2 - 9.3 mi

Top 87%
×3story building
+67ft-78ft

Overall

24798

Females

10108

F18-39

10108

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

25364

Females

10460

F18-39

10460

20K→Half

12.4 - 13.1 mi

Top 91%
×2story building
+19ft-37ft

Overall

25856

Females

10744

F18-39

10744

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

25972

Females

10849

F18-39

10849

25K→30K

15.5 - 18.6 mi

Top 86%
×9story building
+181ft-148ft

Overall

24532

Females

10148

F18-39

10148

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25579

Females

10791

F18-39

10791

20M→21M

20.0 - 21.0 mi

Top 83%
×8story building
+106ft-24ft

Overall

23638

Females

9837

F18-39

9837

21M→35K

21.0 - 21.8 mi

Top 92%
×7story building
+17ft-86ft

Overall

26231

Females

11206

F18-39

11206

35K→23M

21.8 - 23.0 mi

Top 84%
×5story building
+23ft-63ft

Overall

23925

Females

10068

F18-39

10068

23M→24M

23.0 - 24.0 mi

Top 85%
×6story building
+12ft-82ft

Overall

24240

Females

10243

F18-39

10243

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

24613

Females

10485

F18-39

10485

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

24999

Females

10685

F18-39

10685

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

23701

Females

10028

F18-39

10028

Passing Analysis

Category:
Athletes Passed
1543
Passed By
679
Net Change
+864
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#26069
5K → 10K40958+351#26069#25718
10K → 15K30721+286#25718#25432
15K → 20K133123+10#25432#25422
20K → Half2133-12#25422#25434
Half → 25K55195-140#25434#25574
25K → 30K23829+209#25574#25365
30K → 20M4374-31#25365#25396
20M → 21M9711+86#25396#25310
21M → 35K1851-33#25310#25343
35K → 23M7114+57#25343#25286
23M → 24M6619+47#25286#25239
24M → 40K2822+6#25239#25233
40K → 25.2M13130#25233#25233
25.2M → Finish4416+28#25233#25205
TOTALS1543679+864
📊

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