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BOSTON MARATHON 2025

Casey Flavin

Bib: 29087•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

Start
0:00:00
Race begins
5K· 3.11 mi
33:06
Rank: #27054
Start → 5K
33:06 | 10:39/mi
10K· 6.21 mi
1:07:00
Rank: #26994 (+60)
5K → 10K
33:54 | 10:55/mi
15K· 9.32 mi
1:41:44
Rank: #26956 (+38)
10K → 15K
34:44 | 11:11/mi
20K· 12.43 mi
2:18:20
Rank: #26965 (-9)
15K → 20K
36:36 | 11:47/mi
Half· 13.11 mi
2:26:25
Rank: #26988 (-23)
20K → Half
8:05 | 11:51/mi
25K· 15.53 mi
2:57:36
Rank: #27046 (-58)
Half → 25K
31:11 | 12:52/mi
30K· 18.64 mi
3:36:21
Rank: #26916 (+130)
25K → 30K
38:45 | 12:28/mi
20M
3:52:44
Rank: #26818 (+98)
30K → 20M
16:23 | 12:03/mi
21M
4:05:28
Rank: #26734 (+84)
20M → 21M
12:44 | 12:44/mi
35K· 21.75 mi
4:14:09
Rank: #26683 (+51)
21M → 35K
8:41 | 11:36/mi
23M
4:30:42
Rank: #26688 (-5)
35K → 23M
16:33 | 13:13/mi
24M
4:41:49
Rank: #26621 (+67)
23M → 24M
11:07 | 11:07/mi
40K· 24.85 mi
4:51:25
Rank: #26553 (+68)
24M → 40K
9:36 | 11:14/mi
25.2M
4:55:51
Rank: #26533 (+20)
40K → 25.2M
4:26 | 12:51/mi
Finish· 26.22 mi
5:07:16
Rank: #26515 (+18)
25.2M → Finish
11:25 | 11:12/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:26:25
Pace11:10 /mi
2nd Half
Distance13.11 mi
Time2:40:51
Pace12:16 /mi
📊Positive Split: 9.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:0833:0610:3933:06
10:39
-
10K
6.21 mi12:26:021:07:0010:4733:54
10:55
+0:16
15K
9.32 mi13:00:461:41:4410:5534:44
11:11
+0:16
20K
12.43 mi13:37:222:18:2011:0836:36
11:47
+0:36
Half
13.11 mi13:45:272:26:2511:108:05
11:51
+0:04
25K
15.53 mi14:16:382:57:3611:2631:11
12:52
+1:01
30K
18.64 mi14:55:233:36:2111:3638:45
12:28
-0:24
20M
20.00 mi15:11:463:52:4411:3816:23
12:03
-0:25
21M
21.00 mi15:24:304:05:2811:4112:44
12:44
+0:41
35K
21.75 mi15:33:114:14:0911:418:41
11:36
-1:08
23M
23.00 mi15:49:444:30:4211:4616:33
13:13
+1:37
24M
24.00 mi16:00:514:41:4911:4511:07
11:07
-2:06
40K
24.85 mi16:10:274:51:2511:439:36
11:14
+0:07
25.2M
25.20 mi16:14:534:55:5111:444:26
12:51
+1:37
Finish
26.22 mi16:26:185:07:1611:4411:25
11:12
-1:39

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

10:39 /mi

Average Pace

11:44 /mi

Slowest Pace

13:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:13:52

44% of race

Time at Steady Pace

1:09:45

23% of race

Time at Slower Pace

1:43:39

34% of race

Average Pace: 11:43 /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 mi11:52:0833:0610:3933:06
10:39
#27054
10K
6.21 mi12:26:021:07:0010:4733:54
10:55
#26994
15K
9.32 mi13:00:461:41:4410:5534:44
11:11
#26956
20K
12.43 mi13:37:222:18:2011:0836:36
11:47
#26965
Half
13.11 mi13:45:272:26:2511:108:05
11:51
#26988
25K
15.53 mi14:16:382:57:3611:2631:11
12:52
#27046
30K
18.64 mi14:55:233:36:2111:3638:45
12:28
#26916
20M
20.00 mi15:11:463:52:4411:3816:23
12:03
#26818
21M
21.00 mi15:24:304:05:2811:4112:44
12:44
#26734
35K
21.75 mi15:33:114:14:0911:418:41
11:36
#26683
23M
23.00 mi15:49:444:30:4211:4616:33
13:13
#26688
24M
24.00 mi16:00:514:41:4911:4511:07
11:07
#26621
40K
24.85 mi16:10:274:51:2511:439:36
11:14
#26553
25.2M
25.20 mi16:14:534:55:5111:444:26
12:51
#26533
Finish
26.22 mi16:26:185:07:1611:4411:25
11:12
#26515
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27054113571135726896(Top 95%)11316(Top 93%)11316(Top 207%)
10K6.21 mi3.10 mi26994+6011340+1711340+1726936(Top 95%)11328(Top 93%)11328(Top 207%)
15K9.32 mi3.11 mi26956+3811330+1011330+1026896(Top 95%)11316(Top 93%)11316(Top 207%)
20K12.43 mi3.11 mi26965-911349-1911349-1926912(Top 95%)11339(Top 93%)11339(Top 207%)
Half13.11 mi0.68 mi26988-2311366-1711366-1727329(Top 96%)11603(Top 95%)11603(Top 212%)
25K15.53 mi2.42 mi27046-5811410-4411410-4427199(Top 96%)11543(Top 94%)11543(Top 211%)
30K18.64 mi3.11 mi26916+13011349+6111349+6126137(Top 92%)11018(Top 90%)11018(Top 201%)
20M20.00 mi1.36 mi26818+9811301+4811301+4825334(Top 89%)10662(Top 87%)10662(Top 195%)
21M21.00 mi1.00 mi26734+8411261+4011261+4024706(Top 87%)10408(Top 85%)10408(Top 190%)
35K21.75 mi0.75 mi26683+5111243+1811243+1825259(Top 89%)10725(Top 88%)10725(Top 196%)
23M23.00 mi1.25 mi26688-511259-1611259-1626626(Top 94%)11413(Top 93%)11413(Top 209%)
24M24.00 mi1.00 mi26621+6711228+3111228+3124208(Top 85%)10229(Top 84%)10229(Top 187%)
40K24.85 mi0.85 mi26553+6811189+3911189+3923603(Top 83%)9994(Top 82%)9994(Top 183%)
25.2M25.20 mi0.35 mi26533+2011176+1311176+1324797(Top 87%)10582(Top 87%)10582(Top 193%)
Finish26.22 mi1.02 mi26515+1811172+411172+425694(Top 90%)10998(Top 90%)10998(Top 201%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21stories
+97ft-345ft

Overall

26896

Females

11316

F18-39

11316

5K→10K

3.1 - 6.2 mi

Top 95%
×5stories
+79ft-138ft

Overall

26936

Females

11328

F18-39

11328

10K→15K

6.2 - 9.3 mi

Top 95%
×3stories
+67ft-78ft

Overall

26896

Females

11316

F18-39

11316

15K→20K

9.3 - 12.4 mi

Top 95%
×5stories
+106ft-86ft

Overall

26912

Females

11339

F18-39

11339

20K→Half

12.4 - 13.1 mi

Top 96%
×2stories
+19ft-37ft

Overall

27329

Females

11603

F18-39

11603

Half→25K

13.1 - 15.5 mi

Top 96%
×4stories
+66ft-88ft

Overall

27199

Females

11543

F18-39

11543

25K→30K

15.5 - 18.6 mi

Top 92%
×9stories
+181ft-148ft

Overall

26137

Females

11018

F18-39

11018

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

25334

Females

10662

F18-39

10662

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

24706

Females

10408

F18-39

10408

21M→35K

21.0 - 21.8 mi

Top 89%
×7stories
+17ft-86ft

Overall

25259

Females

10725

F18-39

10725

35K→23M

21.8 - 23.0 mi

Top 94%
×5stories
+23ft-63ft

Overall

26626

Females

11413

F18-39

11413

23M→24M

23.0 - 24.0 mi

Top 85%
×6stories
+12ft-82ft

Overall

24208

Females

10229

F18-39

10229

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

23603

Females

9994

F18-39

9994

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1story
+13ft-16ft

Overall

24797

Females

10582

F18-39

10582

25.2M→Finish

25.2 - 26.2 mi

Top 90%
×2stories
+22ft-21ft

Overall

25694

Females

10998

F18-39

10998

Passing Analysis

Category:
Athletes Passed
1104
Passed By
565
Net Change
+539
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27054
5K → 10K170110+60#27054#26994
10K → 15K12890+38#26994#26956
15K → 20K105114-9#26956#26965
20K → Half1740-23#26965#26988
Half → 25K4199-58#26988#27046
25K → 30K15626+130#27046#26916
30K → 20M1024+98#26916#26818
20M → 21M917+84#26818#26734
21M → 35K543+51#26734#26683
35K → 23M4247-5#26683#26688
23M → 24M703+67#26688#26621
24M → 40K713+68#26621#26553
40K → 25.2M211+20#26553#26533
25.2M → Finish3618+18#26533#26515
TOTALS1104565+539
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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