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BOSTON MARATHON 2025

Carissa Childs

Bib: 22561•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 49%
Masters (Masters Women)
#0 / 6759
Top 38%
Division (F45-49)
#0 / 1813
Top 48%
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
8:12/mi
25:28
↑ 97↓ 3451.5%
10K· 6.21 mi
8:13/mi
51:00
↑ 79↓ 1380.4%
15K· 9.32 mi
8:14/mi
1:16:35
↑ 67↓ 78
20K· 12.43 mi
8:22/mi
1:42:35
↑ 106↓ 860.1%
Half· 13.11 mi
8:21/mi
1:48:17
↑ 19↓ 370.5%
25K· 15.53 mi
8:35/mi
2:09:05
↑ 66↓ 880.2%
30K· 18.64 mi
8:51/mi
2:36:34
↑ 181↓ 1480.2%
20M
8:53/mi
2:48:38
↑ 64↓ 500.2%
21M
9:29/mi
2:58:07
↑ 106↓ 241.6%
35K· 21.75 mi
8:48/mi
3:04:42
↑ 17↓ 861.7%
23M
9:05/mi
3:16:05
↑ 23↓ 630.6%
24M
8:51/mi
3:24:56
↓ 821.3%
40K· 24.85 mi
9:03/mi
3:32:40
↓ 200.3%
25.2M
9:49/mi
3:36:03
↑ 13↓ 160.2%
Finish· 26.22 mi
8:21/mi
3:44:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:17
Pace8:16 /mi
2nd Half
Distance13.11 mi
Time1:56:17
Pace8:52 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:1125:288:1225:28
8:12
-
10K
6.21 mi11:48:4351:008:1225:32
8:13
+0:01
15K
9.32 mi12:14:181:16:358:1325:35
8:14
+0:01
20K
12.43 mi12:40:181:42:358:1526:00
8:22
+0:08
Half
13.11 mi12:46:001:48:178:165:42
8:21
-0:01
25K
15.53 mi13:06:482:09:058:1920:48
8:35
+0:14
30K
18.64 mi13:34:172:36:348:2427:29
8:51
+0:16
20M
20.00 mi13:46:212:48:388:2612:04
8:53
+0:02
21M
21.00 mi13:55:502:58:078:299:29
9:29
+0:36
35K
21.75 mi14:02:253:04:428:306:35
8:48
-0:41
23M
23.00 mi14:13:483:16:058:3211:23
9:05
+0:17
24M
24.00 mi14:22:393:24:568:328:51
8:51
-0:14
40K
24.85 mi14:30:233:32:408:337:44
9:03
+0:12
25.2M
25.20 mi14:33:463:36:038:343:23
9:49
+0:46
Finish
26.22 mi14:42:173:44:348:348:31
8:21
-1:28

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

8:12 /mi

Average Pace

8:34 /mi

Slowest Pace

9:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:12:35

86% of race

Time at Steady Pace

28:36

13% of race

Time at Slower Pace

3:23

2% of race

Average Pace: 8:34 /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 mi11:23:1125:288:1225:28
8:12
#18087
10K
6.21 mi11:48:4351:008:1225:32
8:13
#18037
15K
9.32 mi12:14:181:16:358:1325:35
8:14
#17868
20K
12.43 mi12:40:181:42:358:1526:00
8:22
#17721
Half
13.11 mi12:46:001:48:178:165:42
8:21
#17735
25K
15.53 mi13:06:482:09:058:1920:48
8:35
#17640
30K
18.64 mi13:34:172:36:348:2427:29
8:51
#17459
20M
20.00 mi13:46:212:48:388:2612:04
8:53
#17342
21M
21.00 mi13:55:502:58:078:299:29
9:29
#17241
35K
21.75 mi14:02:253:04:428:306:35
8:48
#17224
23M
23.00 mi14:13:483:16:058:3211:23
9:05
#17191
24M
24.00 mi14:22:393:24:568:328:51
8:51
#17155
40K
24.85 mi14:30:233:32:408:337:44
9:03
#17124
25.2M
25.20 mi14:33:463:36:038:343:23
9:49
#17103
Finish
26.22 mi14:42:173:44:348:348:31
8:21
#17027
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi180876397639717615(Top 62%)6087(Top 50%)6087(Top 336%)
10K6.21 mi3.10 mi18037+506352+456352+4518029(Top 63%)6311(Top 52%)6311(Top 348%)
15K9.32 mi3.11 mi17868+1696246+1066246+10617615(Top 62%)6087(Top 50%)6087(Top 336%)
20K12.43 mi3.11 mi17721+1476171+756171+7517366(Top 61%)5988(Top 49%)5988(Top 330%)
Half13.11 mi0.68 mi17735-146184-136184-1318327(Top 65%)6504(Top 53%)6504(Top 359%)
25K15.53 mi2.42 mi17640+956143+416143+4117686(Top 62%)6242(Top 51%)6242(Top 344%)
30K18.64 mi3.11 mi17459+1816094+496094+4916877(Top 59%)5969(Top 49%)5969(Top 329%)
20M20.00 mi1.36 mi17342+1176050+446050+4416131(Top 57%)5673(Top 46%)5673(Top 313%)
21M21.00 mi1.00 mi17241+1016016+346016+3416021(Top 56%)5717(Top 47%)5717(Top 315%)
35K21.75 mi0.75 mi17224+176035-196035-1917264(Top 61%)6499(Top 53%)6499(Top 358%)
23M23.00 mi1.25 mi17191+336047-126047-1216787(Top 59%)6326(Top 52%)6326(Top 349%)
24M24.00 mi1.00 mi17155+366047604716609(Top 58%)6271(Top 51%)6271(Top 346%)
40K24.85 mi0.85 mi17124+316056-96056-916594(Top 58%)6364(Top 52%)6364(Top 351%)
25.2M25.20 mi0.35 mi17103+216061-56061-516203(Top 57%)6188(Top 51%)6188(Top 341%)
Finish26.22 mi1.02 mi17027+766036+256036+2515324(Top 54%)5657(Top 46%)5657(Top 312%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21story building
+97ft-345ft

Overall

17615

Females

6087

F45-49

6087

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

18029

Females

6311

F45-49

6311

10K→15K

6.2 - 9.3 mi

Top 62%
×3story building
+67ft-78ft

Overall

17615

Females

6087

F45-49

6087

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17366

Females

5988

F45-49

5988

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18327

Females

6504

F45-49

6504

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

17686

Females

6242

F45-49

6242

25K→30K

15.5 - 18.6 mi

Top 59%
×9story building
+181ft-148ft

Overall

16877

Females

5969

F45-49

5969

30K→20M

18.6 - 20.0 mi

Top 57%
×5story building
+64ft-50ft

Overall

16131

Females

5673

F45-49

5673

20M→21M

20.0 - 21.0 mi

Top 56%
×8story building
+106ft-24ft

Overall

16021

Females

5717

F45-49

5717

21M→35K

21.0 - 21.8 mi

Top 61%
×7story building
+17ft-86ft

Overall

17264

Females

6499

F45-49

6499

35K→23M

21.8 - 23.0 mi

Top 59%
×5story building
+23ft-63ft

Overall

16787

Females

6326

F45-49

6326

23M→24M

23.0 - 24.0 mi

Top 58%
×6story building
+12ft-82ft

Overall

16609

Females

6271

F45-49

6271

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16594

Females

6364

F45-49

6364

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16203

Females

6188

F45-49

6188

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

15324

Females

5657

F45-49

5657

Passing Analysis

Category:
Athletes Passed
2226
Passed By
1166
Net Change
+1060
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18087
5K → 10K308258+50#18087#18037
10K → 15K286117+169#18037#17868
15K → 20K261114+147#17868#17721
20K → Half2943-14#17721#17735
Half → 25K207112+95#17735#17640
25K → 30K301120+181#17640#17459
30K → 20M16750+117#17459#17342
20M → 21M15655+101#17342#17241
21M → 35K7558+17#17241#17224
35K → 23M11986+33#17224#17191
23M → 24M9458+36#17191#17155
24M → 40K7645+31#17155#17124
40K → 25.2M4625+21#17124#17103
25.2M → Finish10125+76#17103#17027
TOTALS22261166+1060
📊

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