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BOSTON MARATHON 2025

Caitlin O'Callaghan

Bib: 31289•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F40-44)
#0 / 1718
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
10:44/mi
33:22
↑ 97↓ 3451.5%
10K· 6.21 mi
10:18/mi
1:05:22
↑ 79↓ 1380.4%
15K· 9.32 mi
10:31/mi
1:38:02
↑ 67↓ 78
20K· 12.43 mi
11:22/mi
2:13:22
↑ 106↓ 860.1%
Half· 13.11 mi
10:54/mi
2:20:48
↑ 19↓ 370.5%
25K· 15.53 mi
12:03/mi
2:50:02
↑ 66↓ 880.2%
30K· 18.64 mi
12:33/mi
3:29:01
↑ 181↓ 1480.2%
20M
12:14/mi
3:45:39
↑ 64↓ 500.2%
21M
13:18/mi
3:58:57
↑ 106↓ 241.6%
35K· 21.75 mi
11:50/mi
4:07:48
↑ 17↓ 861.7%
23M
12:12/mi
4:23:04
↑ 23↓ 630.6%
24M
11:27/mi
4:34:31
↓ 821.3%
40K· 24.85 mi
11:52/mi
4:44:40
↓ 200.3%
25.2M
12:34/mi
4:49:00
↑ 13↓ 160.2%
Finish· 26.22 mi
10:55/mi
5:00:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:48
Pace10:44 /mi
2nd Half
Distance13.11 mi
Time2:39:19
Pace12:09 /mi
📊Positive Split: 13.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:55:4533:2210:4433:22
10:44
-
10K
6.21 mi12:27:451:05:2210:3132:00
10:18
-0:26
15K
9.32 mi13:00:251:38:0210:3132:40
10:31
+0:13
20K
12.43 mi13:35:452:13:2210:4435:20
11:22
+0:51
Half
13.11 mi13:43:112:20:4810:447:26
10:54
-0:28
25K
15.53 mi14:12:252:50:0210:5729:14
12:03
+1:09
30K
18.64 mi14:51:243:29:0111:1338:59
12:33
+0:30
20M
20.00 mi15:08:023:45:3911:1716:38
12:14
-0:19
21M
21.00 mi15:21:203:58:5711:2313:18
13:18
+1:04
35K
21.75 mi15:30:114:07:4811:248:51
11:50
-1:28
23M
23.00 mi15:45:274:23:0411:2615:16
12:12
+0:22
24M
24.00 mi15:56:544:34:3111:2611:27
11:27
-0:45
40K
24.85 mi16:07:034:44:4011:2710:09
11:52
+0:25
25.2M
25.20 mi16:11:234:49:0011:284:20
12:34
+0:42
Finish
26.22 mi16:22:305:00:0711:2711:07
10:55
-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

10:18 /mi

Average Pace

11:27 /mi

Slowest Pace

13:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:55

51% of race

Time at Steady Pace

1:31:35

31% of race

Time at Slower Pace

56:37

19% of race

Average Pace: 11:27 /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 mi11:55:4533:2210:4433:22
10:44
#27182
10K
6.21 mi12:27:451:05:2210:3132:00
10:18
#26520
15K
9.32 mi13:00:251:38:0210:3132:40
10:31
#26314
20K
12.43 mi13:35:452:13:2210:4435:20
11:22
#26373
Half
13.11 mi13:43:112:20:4810:447:26
10:54
#26380
25K
15.53 mi14:12:252:50:0210:5729:14
12:03
#26415
30K
18.64 mi14:51:243:29:0111:1338:59
12:33
#26405
20M
20.00 mi15:08:023:45:3911:1716:38
12:14
#26347
21M
21.00 mi15:21:203:58:5711:2313:18
13:18
#26314
35K
21.75 mi15:30:114:07:4811:248:51
11:50
#26295
23M
23.00 mi15:45:274:23:0411:2615:16
12:12
#26245
24M
24.00 mi15:56:544:34:3111:2611:27
11:27
#26202
40K
24.85 mi16:07:034:44:4011:2710:09
11:52
#26163
25.2M
25.20 mi16:11:234:49:0011:284:20
12:34
#26150
Finish
26.22 mi16:22:305:00:0711:2711:07
10:55
#26142
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi27182114361143625966(Top 91%)10773(Top 88%)10773(Top 627%)
10K6.21 mi3.10 mi26520+66211061+37511061+37525909(Top 91%)10737(Top 88%)10737(Top 625%)
15K9.32 mi3.11 mi26314+20610958+10310958+10325966(Top 91%)10773(Top 88%)10773(Top 627%)
20K12.43 mi3.11 mi26373-5910991-3310991-3326467(Top 93%)11079(Top 91%)11079(Top 645%)
Half13.11 mi0.68 mi26380-710996-510996-526358(Top 93%)11034(Top 90%)11034(Top 642%)
25K15.53 mi2.42 mi26415-3511025-2911025-2926486(Top 93%)11130(Top 91%)11130(Top 648%)
30K18.64 mi3.11 mi26405+1011044-1911044-1926223(Top 92%)11075(Top 91%)11075(Top 645%)
20M20.00 mi1.36 mi26347+5811035+911035+925584(Top 90%)10796(Top 88%)10796(Top 628%)
21M21.00 mi1.00 mi26314+3311027+811027+825427(Top 90%)10777(Top 88%)10777(Top 627%)
35K21.75 mi0.75 mi26295+19110271102725596(Top 90%)10901(Top 89%)10901(Top 635%)
23M23.00 mi1.25 mi26245+5011006+2111006+2125375(Top 89%)10793(Top 88%)10793(Top 628%)
24M24.00 mi1.00 mi26202+4310993+1310993+1324803(Top 87%)10542(Top 86%)10542(Top 614%)
40K24.85 mi0.85 mi26163+3910977+1610977+1624703(Top 87%)10533(Top 86%)10533(Top 613%)
25.2M25.20 mi0.35 mi26150+1310972+510972+524286(Top 86%)10314(Top 84%)10314(Top 600%)
Finish26.22 mi1.02 mi26142+810968+410968+425177(Top 89%)10738(Top 88%)10738(Top 625%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 91%
×21story building
+97ft-345ft

Overall

25966

Females

10773

F40-44

10773

5K→10K

3.1 - 6.2 mi

Top 91%
×5story building
+79ft-138ft

Overall

25909

Females

10737

F40-44

10737

10K→15K

6.2 - 9.3 mi

Top 91%
×3story building
+67ft-78ft

Overall

25966

Females

10773

F40-44

10773

15K→20K

9.3 - 12.4 mi

Top 93%
×5story building
+106ft-86ft

Overall

26467

Females

11079

F40-44

11079

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

26358

Females

11034

F40-44

11034

Half→25K

13.1 - 15.5 mi

Top 93%
×4story building
+66ft-88ft

Overall

26486

Females

11130

F40-44

11130

25K→30K

15.5 - 18.6 mi

Top 92%
×9story building
+181ft-148ft

Overall

26223

Females

11075

F40-44

11075

30K→20M

18.6 - 20.0 mi

Top 90%
×5story building
+64ft-50ft

Overall

25584

Females

10796

F40-44

10796

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

25427

Females

10777

F40-44

10777

21M→35K

21.0 - 21.8 mi

Top 90%
×7story building
+17ft-86ft

Overall

25596

Females

10901

F40-44

10901

35K→23M

21.8 - 23.0 mi

Top 89%
×5story building
+23ft-63ft

Overall

25375

Females

10793

F40-44

10793

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

24803

Females

10542

F40-44

10542

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

24703

Females

10533

F40-44

10533

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

24286

Females

10314

F40-44

10314

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

25177

Females

10738

F40-44

10738

Passing Analysis

Category:
Athletes Passed
1589
Passed By
549
Net Change
+1040
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27182
5K → 10K67210+662#27182#26520
10K → 15K24135+206#26520#26314
15K → 20K102161-59#26314#26373
20K → Half1522-7#26373#26380
Half → 25K82117-35#26380#26415
25K → 30K10494+10#26415#26405
30K → 20M7719+58#26405#26347
20M → 21M5724+33#26347#26314
21M → 35K3112+19#26314#26295
35K → 23M6212+50#26295#26245
23M → 24M5310+43#26245#26202
24M → 40K467+39#26202#26163
40K → 25.2M185+13#26163#26150
25.2M → Finish2921+8#26150#26142
TOTALS1589549+1040
📊

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