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BOSTON MARATHON 2025

Kaitlin Casey

Bib: 18852•F

NY

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
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
7:37/mi
23:40
↑ 97↓ 3451.5%
10K· 6.21 mi
7:53/mi
48:10
↑ 79↓ 1380.4%
15K· 9.32 mi
7:54/mi
1:12:44
↑ 67↓ 78
20K· 12.43 mi
8:01/mi
1:37:38
↑ 106↓ 860.1%
Half· 13.11 mi
7:50/mi
1:42:59
↑ 19↓ 370.5%
25K· 15.53 mi
8:12/mi
2:02:51
↑ 66↓ 880.2%
30K· 18.64 mi
8:41/mi
2:29:50
↑ 181↓ 1480.2%
20M
8:39/mi
2:41:35
↑ 64↓ 500.2%
21M
9:13/mi
2:50:48
↑ 106↓ 241.6%
35K· 21.75 mi
8:21/mi
2:57:03
↑ 17↓ 861.7%
23M
8:22/mi
3:07:31
↑ 23↓ 630.6%
24M
8:21/mi
3:15:52
↓ 821.3%
40K· 24.85 mi
8:28/mi
3:23:06
↓ 200.3%
25.2M
9:25/mi
3:26:21
↑ 13↓ 160.2%
Finish· 26.22 mi
7:47/mi
3:34:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:59
Pace7:51 /mi
2nd Half
Distance13.11 mi
Time1:51:18
Pace8:29 /mi
📊Positive Split: 8.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:3323:407:3723:40
7:37
-
10K
6.21 mi11:42:0348:107:4524:30
7:53
+0:16
15K
9.32 mi12:06:371:12:447:4824:34
7:54
+0:01
20K
12.43 mi12:31:311:37:387:5124:54
8:01
+0:07
Half
13.11 mi12:36:521:42:597:515:21
7:50
-0:11
25K
15.53 mi12:56:442:02:517:5419:52
8:12
+0:22
30K
18.64 mi13:23:432:29:508:0226:59
8:41
+0:29
20M
20.00 mi13:35:282:41:358:0511:45
8:39
-0:02
21M
21.00 mi13:44:412:50:488:089:13
9:13
+0:34
35K
21.75 mi13:50:562:57:038:086:15
8:21
-0:52
23M
23.00 mi14:01:243:07:318:0910:28
8:22
+0:01
24M
24.00 mi14:09:453:15:528:108:21
8:21
-0:01
40K
24.85 mi14:16:593:23:068:107:14
8:28
+0:07
25.2M
25.20 mi14:20:143:26:218:113:15
9:25
+0:57
Finish
26.22 mi14:28:103:34:178:117:56
7:47
-1:38

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

8:11 /mi

Slowest Pace

9:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:55

52% of race

Time at Steady Pace

52:10

24% of race

Time at Slower Pace

51:12

24% of race

Average Pace: 8:10 /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 mi11:17:3323:407:3723:40
7:37
#13291
10K
6.21 mi11:42:0348:107:4524:30
7:53
#14343
15K
9.32 mi12:06:371:12:447:4824:34
7:54
#14655
20K
12.43 mi12:31:311:37:387:5124:54
8:01
#14721
Half
13.11 mi12:36:521:42:597:515:21
7:50
#14720
25K
15.53 mi12:56:442:02:517:5419:52
8:12
#14797
30K
18.64 mi13:23:432:29:508:0226:59
8:41
#15030
20M
20.00 mi13:35:282:41:358:0511:45
8:39
#14976
21M
21.00 mi13:44:412:50:488:089:13
9:13
#14903
35K
21.75 mi13:50:562:57:038:086:15
8:21
#14877
23M
23.00 mi14:01:243:07:318:0910:28
8:22
#14687
24M
24.00 mi14:09:453:15:528:108:21
8:21
#14619
40K
24.85 mi14:16:593:23:068:107:14
8:28
#14539
25.2M
25.20 mi14:20:143:26:218:113:15
9:25
#14522
Finish
26.22 mi14:28:103:34:178:117:56
7:47
#14365
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi132913492349215311(Top 54%)4755(Top 39%)4755(Top 87%)
10K6.21 mi3.10 mi14343-10524147-6554147-65515576(Top 55%)4875(Top 40%)4875(Top 89%)
15K9.32 mi3.11 mi14655-3124344-1974344-19715311(Top 54%)4755(Top 39%)4755(Top 87%)
20K12.43 mi3.11 mi14721-664421-774421-7715055(Top 53%)4670(Top 38%)4670(Top 85%)
Half13.11 mi0.68 mi14720+14424-34424-314671(Top 52%)4438(Top 36%)4438(Top 81%)
25K15.53 mi2.42 mi14797-774503-794503-7915287(Top 54%)4889(Top 40%)4889(Top 89%)
30K18.64 mi3.11 mi15030-2334683-1804683-18015905(Top 56%)5406(Top 44%)5406(Top 99%)
20M20.00 mi1.36 mi14976+544685-24685-214712(Top 52%)4887(Top 40%)4887(Top 89%)
21M21.00 mi1.00 mi14903+734666+194666+1914727(Top 52%)5014(Top 41%)5014(Top 92%)
35K21.75 mi0.75 mi14877+264666466614626(Top 51%)5029(Top 41%)5029(Top 92%)
23M23.00 mi1.25 mi14687+1904596+704596+7012450(Top 44%)3980(Top 33%)3980(Top 73%)
24M24.00 mi1.00 mi14619+684582+144582+1413586(Top 48%)4609(Top 38%)4609(Top 84%)
40K24.85 mi0.85 mi14539+804571+114571+1113210(Top 47%)4555(Top 37%)4555(Top 83%)
25.2M25.20 mi0.35 mi14522+174573-24573-214198(Top 50%)5118(Top 42%)5118(Top 94%)
Finish26.22 mi1.02 mi14365+1574515+584515+5811367(Top 40%)3653(Top 30%)3653(Top 67%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15311

Females

4755

F18-39

4755

5K→10K

3.1 - 6.2 mi

Top 55%
×5story building
+79ft-138ft

Overall

15576

Females

4875

F18-39

4875

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15311

Females

4755

F18-39

4755

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

15055

Females

4670

F18-39

4670

20K→Half

12.4 - 13.1 mi

Top 52%
×2story building
+19ft-37ft

Overall

14671

Females

4438

F18-39

4438

Half→25K

13.1 - 15.5 mi

Top 54%
×4story building
+66ft-88ft

Overall

15287

Females

4889

F18-39

4889

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

15905

Females

5406

F18-39

5406

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

14712

Females

4887

F18-39

4887

20M→21M

20.0 - 21.0 mi

Top 52%
×8story building
+106ft-24ft

Overall

14727

Females

5014

F18-39

5014

21M→35K

21.0 - 21.8 mi

Top 51%
×7story building
+17ft-86ft

Overall

14626

Females

5029

F18-39

5029

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

12450

Females

3980

F18-39

3980

23M→24M

23.0 - 24.0 mi

Top 48%
×6story building
+12ft-82ft

Overall

13586

Females

4609

F18-39

4609

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

13210

Females

4555

F18-39

4555

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14198

Females

5118

F18-39

5118

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2story building
+22ft-21ft

Overall

11367

Females

3653

F18-39

3653

Passing Analysis

Category:
Athletes Passed
1744
Passed By
2818
Net Change
-1074
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13291
5K → 10K621114-1052#13291#14343
10K → 15K109421-312#14343#14655
15K → 20K192258-66#14655#14721
20K → Half3231+1#14721#14720
Half → 25K155232-77#14720#14797
25K → 30K183416-233#14797#15030
30K → 20M154100+54#15030#14976
20M → 21M14572+73#14976#14903
21M → 35K7044+26#14903#14877
35K → 23M21424+190#14877#14687
23M → 24M10638+68#14687#14619
24M → 40K11535+80#14619#14539
40K → 25.2M3922+17#14539#14522
25.2M → Finish16811+157#14522#14365
TOTALS17442818-1074
📊

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