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BOSTON MARATHON 2025

Cailin Mcadams

Bib: 29652•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
28:41
Rank: #23342
Start → 5K
28:41 | 9:14/mi
10K· 6.21 mi
57:12
Rank: #23224 (+118)
5K → 10K
28:31 | 9:11/mi
15K· 9.32 mi
1:26:11
Rank: #23262 (-38)
10K → 15K
28:59 | 9:20/mi
20K· 12.43 mi
1:56:15
Rank: #23297 (-35)
15K → 20K
30:04 | 9:41/mi
Half· 13.11 mi
2:02:32
Rank: #23275 (+22)
20K → Half
6:17 | 9:13/mi
25K· 15.53 mi
2:25:31
Rank: #23011 (+264)
Half → 25K
22:59 | 9:29/mi
30K· 18.64 mi
2:57:06
Rank: #22803 (+208)
25K → 30K
31:35 | 10:10/mi
20M
3:11:04
Rank: #22726 (+77)
30K → 20M
13:58 | 10:17/mi
21M
3:22:00
Rank: #22623 (+103)
20M → 21M
10:56 | 10:56/mi
35K· 21.75 mi
3:29:38
Rank: #22592 (+31)
21M → 35K
7:38 | 10:12/mi
23M
3:42:45
Rank: #22554 (+38)
35K → 23M
13:07 | 10:29/mi
24M
3:52:54
Rank: #22506 (+48)
23M → 24M
10:09 | 10:09/mi
40K· 24.85 mi
4:01:26
Rank: #22412 (+94)
24M → 40K
8:32 | 9:59/mi
25.2M
4:05:12
Rank: #22378 (+34)
40K → 25.2M
3:46 | 10:55/mi
Finish· 26.22 mi
4:14:48
Rank: #22333 (+45)
25.2M → Finish
9:36 | 9:25/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:02:32
Pace9:21 /mi
2nd Half
Distance13.11 mi
Time2:12:16
Pace10:05 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:5328:419:1428:41
9:14
-
10K
6.21 mi12:13:2457:129:1228:31
9:11
-0:03
15K
9.32 mi12:42:231:26:119:1528:59
9:20
+0:09
20K
12.43 mi13:12:271:56:159:2130:04
9:41
+0:21
Half
13.11 mi13:18:442:02:329:216:17
9:13
-0:28
25K
15.53 mi13:41:432:25:319:2222:59
9:29
+0:16
30K
18.64 mi14:13:182:57:069:3031:35
10:10
+0:41
20M
20.00 mi14:27:163:11:049:3313:58
10:17
+0:07
21M
21.00 mi14:38:123:22:009:3710:56
10:56
+0:39
35K
21.75 mi14:45:503:29:389:387:38
10:12
-0:44
23M
23.00 mi14:58:573:42:459:4113:07
10:29
+0:17
24M
24.00 mi15:09:063:52:549:4210:09
10:09
-0:20
40K
24.85 mi15:17:384:01:269:438:32
9:59
-0:10
25.2M
25.20 mi15:21:244:05:129:443:46
10:55
+0:56
Finish
26.22 mi15:31:004:14:489:449:36
9:25
-1:30

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

9:11 /mi

Average Pace

9:44 /mi

Slowest Pace

10:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:39

64% of race

Time at Steady Pace

1:16:27

30% of race

Time at Slower Pace

14:42

6% of race

Average Pace: 9:43 /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 mi11:44:5328:419:1428:41
9:14
#23342
10K
6.21 mi12:13:2457:129:1228:31
9:11
#23224
15K
9.32 mi12:42:231:26:119:1528:59
9:20
#23262
20K
12.43 mi13:12:271:56:159:2130:04
9:41
#23297
Half
13.11 mi13:18:442:02:329:216:17
9:13
#23275
25K
15.53 mi13:41:432:25:319:2222:59
9:29
#23011
30K
18.64 mi14:13:182:57:069:3031:35
10:10
#22803
20M
20.00 mi14:27:163:11:049:3313:58
10:17
#22726
21M
21.00 mi14:38:123:22:009:3710:56
10:56
#22623
35K
21.75 mi14:45:503:29:389:387:38
10:12
#22592
23M
23.00 mi14:58:573:42:459:4113:07
10:29
#22554
24M
24.00 mi15:09:063:52:549:4210:09
10:09
#22506
40K
24.85 mi15:17:384:01:269:438:32
9:59
#22412
25.2M
25.20 mi15:21:244:05:129:443:46
10:55
#22378
Finish
26.22 mi15:31:004:14:489:449:36
9:25
#22333
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi233429353935323299(Top 82%)9262(Top 76%)9262(Top 169%)
10K6.21 mi3.10 mi23224+1189271+829271+8223122(Top 81%)9201(Top 75%)9201(Top 168%)
15K9.32 mi3.11 mi23262-389271927123299(Top 82%)9262(Top 76%)9262(Top 169%)
20K12.43 mi3.11 mi23297-359285-149285-1423424(Top 82%)9378(Top 77%)9378(Top 171%)
Half13.11 mi0.68 mi23275+229273+129273+1222663(Top 80%)8967(Top 73%)8967(Top 164%)
25K15.53 mi2.42 mi23011+2649152+1219152+12121795(Top 77%)8542(Top 70%)8542(Top 156%)
30K18.64 mi3.11 mi22803+2089071+819071+8122104(Top 78%)8820(Top 72%)8820(Top 161%)
20M20.00 mi1.36 mi22726+779060+119060+1121810(Top 77%)8795(Top 72%)8795(Top 161%)
21M21.00 mi1.00 mi22623+1039016+449016+4421224(Top 75%)8573(Top 70%)8573(Top 157%)
35K21.75 mi0.75 mi22592+319014+29014+222455(Top 79%)9265(Top 76%)9265(Top 169%)
23M23.00 mi1.25 mi22554+389015-19015-121965(Top 77%)9049(Top 74%)9049(Top 165%)
24M24.00 mi1.00 mi22506+489017-29017-221808(Top 77%)9040(Top 74%)9040(Top 165%)
40K24.85 mi0.85 mi22412+948985+328985+3220424(Top 72%)8372(Top 68%)8372(Top 153%)
25.2M25.20 mi0.35 mi22378+348976+98976+920442(Top 72%)8390(Top 69%)8390(Top 153%)
Finish26.22 mi1.02 mi22333+458965+118965+1120914(Top 74%)8617(Top 70%)8617(Top 158%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

23299

Females

9262

F18-39

9262

5K→10K

3.1 - 6.2 mi

Top 81%
×5stories
+79ft-138ft

Overall

23122

Females

9201

F18-39

9201

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

23299

Females

9262

F18-39

9262

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

23424

Females

9378

F18-39

9378

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

22663

Females

8967

F18-39

8967

Half→25K

13.1 - 15.5 mi

Top 77%
×4stories
+66ft-88ft

Overall

21795

Females

8542

F18-39

8542

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

22104

Females

8820

F18-39

8820

30K→20M

18.6 - 20.0 mi

Top 77%
×5stories
+64ft-50ft

Overall

21810

Females

8795

F18-39

8795

20M→21M

20.0 - 21.0 mi

Top 75%
×8stories
+106ft-24ft

Overall

21224

Females

8573

F18-39

8573

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

22455

Females

9265

F18-39

9265

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

21965

Females

9049

F18-39

9049

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

21808

Females

9040

F18-39

9040

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20424

Females

8372

F18-39

8372

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20442

Females

8390

F18-39

8390

25.2M→Finish

25.2 - 26.2 mi

Top 74%
×2stories
+22ft-21ft

Overall

20914

Females

8617

F18-39

8617

Passing Analysis

Category:
Athletes Passed
1873
Passed By
864
Net Change
+1009
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23342
5K → 10K289171+118#23342#23224
10K → 15K170208-38#23224#23262
15K → 20K143178-35#23262#23297
20K → Half4321+22#23297#23275
Half → 25K28723+264#23275#23011
25K → 30K26961+208#23011#22803
30K → 20M11639+77#22803#22726
20M → 21M12926+103#22726#22623
21M → 35K5827+31#22623#22592
35K → 23M8850+38#22592#22554
23M → 24M7426+48#22554#22506
24M → 40K1006+94#22506#22412
40K → 25.2M417+34#22412#22378
25.2M → Finish6621+45#22378#22333
TOTALS1873864+1009
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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