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BOSTON MARATHON 2025

Katie Cronin

Bib: 10485•F

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 37%
Gender (Female)
#0 / 12228
Top 20%
Division (F18-39)
#0 / 5469
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:06
Rank: #8785
Start → 5K
22:06 | 7:07/mi
10K· 6.21 mi
43:58
Rank: #8481 (+304)
5K → 10K
21:52 | 7:02/mi
15K· 9.32 mi
1:05:53
Rank: #8272 (+209)
10K → 15K
21:55 | 7:03/mi
20K· 12.43 mi
1:27:53
Rank: #7978 (+294)
15K → 20K
22:00 | 7:05/mi
Half· 13.11 mi
1:32:41
Rank: #7963 (+15)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:50:05
Rank: #7836 (+127)
Half → 25K
17:24 | 7:11/mi
30K· 18.64 mi
2:14:16
Rank: #8042 (-206)
25K → 30K
24:11 | 7:47/mi
20M
2:31:59
Rank: #11078 (-3036)
30K → 20M
17:43 | 13:02/mi
21M
2:40:02
Rank: #10844 (+234)
20M → 21M
8:03 | 8:03/mi
35K· 21.75 mi
2:45:51
Rank: #10818 (+26)
21M → 35K
5:49 | 7:46/mi
23M
2:55:50
Rank: #10703 (+115)
35K → 23M
9:59 | 7:58/mi
24M
3:03:38
Rank: #10636 (+67)
23M → 24M
7:48 | 7:48/mi
40K· 24.85 mi
3:10:29
Rank: #10586 (+50)
24M → 40K
6:51 | 8:01/mi
25.2M
3:13:28
Rank: #10543 (+43)
40K → 25.2M
2:59 | 8:39/mi
Finish· 26.22 mi
3:21:04
Rank: #10457 (+86)
25.2M → Finish
7:36 | 7:27/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:41
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:48:23
Pace8:16 /mi
📊Positive Split: 16.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:0622:067:0722:06
7:07
-
10K
6.21 mi11:10:5843:587:0521:52
7:02
-0:05
15K
9.32 mi11:32:531:05:537:0421:55
7:03
+0:01
20K
12.43 mi11:54:531:27:537:0422:00
7:05
+0:02
Half
13.11 mi11:59:411:32:417:044:48
7:02
-0:03
25K
15.53 mi12:17:051:50:057:0517:24
7:11
+0:09
30K
18.64 mi12:41:162:14:167:1224:11
7:47
+0:36
20M
20.00 mi12:58:592:31:597:3617:43
13:02
+5:15
21M
21.00 mi13:07:022:40:027:378:03
8:03
-4:59
35K
21.75 mi13:12:512:45:517:385:49
7:46
-0:17
23M
23.00 mi13:22:502:55:507:399:59
7:58
+0:12
24M
24.00 mi13:30:383:03:387:397:48
7:48
-0:10
40K
24.85 mi13:37:293:10:297:406:51
8:01
+0:13
25.2M
25.20 mi13:40:283:13:287:412:59
8:39
+0:38
Finish
26.22 mi13:48:043:21:047:407:36
7:27
-1:12

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

7:02 /mi

Average Pace

7:40 /mi

Slowest Pace

13:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

26:40

13% of race

Time at Steady Pace

2:33:42

76% of race

Time at Slower Pace

20:42

10% of race

Average Pace: 7:40 /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 mi10:49:0622:067:0722:06
7:07
#8785
10K
6.21 mi11:10:5843:587:0521:52
7:02
#8481
15K
9.32 mi11:32:531:05:537:0421:55
7:03
#8272
20K
12.43 mi11:54:531:27:537:0422:00
7:05
#7978
Half
13.11 mi11:59:411:32:417:044:48
7:02
#7963
25K
15.53 mi12:17:051:50:057:0517:24
7:11
#7836
30K
18.64 mi12:41:162:14:167:1224:11
7:47
#8042
20M
20.00 mi12:58:592:31:597:3617:43
13:02
#11078
21M
21.00 mi13:07:022:40:027:378:03
8:03
#10844
35K
21.75 mi13:12:512:45:517:385:49
7:46
#10818
23M
23.00 mi13:22:502:55:507:399:59
7:58
#10703
24M
24.00 mi13:30:383:03:387:397:48
7:48
#10636
40K
24.85 mi13:37:293:10:297:406:51
8:01
#10586
25.2M
25.20 mi13:40:283:13:287:412:59
8:39
#10543
Finish
26.22 mi13:48:043:21:047:407:36
7:27
#10457
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8785128312838009(Top 28%)1046(Top 9%)1046(Top 19%)
10K6.21 mi3.10 mi8481+3041175+1081175+1088225(Top 29%)1086(Top 9%)1086(Top 20%)
15K9.32 mi3.11 mi8272+2091111+641111+648009(Top 28%)1046(Top 9%)1046(Top 19%)
20K12.43 mi3.11 mi7978+2941019+921019+927424(Top 26%)904(Top 7%)904(Top 17%)
Half13.11 mi0.68 mi7963+151015+41015+47918(Top 28%)1077(Top 9%)1077(Top 20%)
25K15.53 mi2.42 mi7836+127987+28987+287451(Top 26%)1023(Top 8%)1023(Top 19%)
30K18.64 mi3.11 mi8042-2061130-1431130-1439831(Top 35%)2212(Top 18%)2212(Top 40%)
20M20.00 mi1.36 mi11078-30362541-14112541-141126483(Top 93%)11274(Top 92%)11274(Top 206%)
21M21.00 mi1.00 mi10844+2342470+712470+717682(Top 27%)1591(Top 13%)1591(Top 29%)
35K21.75 mi0.75 mi10818+262484-142484-1410647(Top 37%)2918(Top 24%)2918(Top 53%)
23M23.00 mi1.25 mi10703+1152462+222462+229869(Top 35%)2673(Top 22%)2673(Top 49%)
24M24.00 mi1.00 mi10636+672461+12461+19829(Top 35%)2717(Top 22%)2717(Top 50%)
40K24.85 mi0.85 mi10586+502462-12462-110315(Top 36%)3079(Top 25%)3079(Top 56%)
25.2M25.20 mi0.35 mi10543+432452+102452+109764(Top 34%)2890(Top 24%)2890(Top 53%)
Finish26.22 mi1.02 mi10457+862447+52447+58924(Top 31%)2498(Top 20%)2498(Top 46%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 28%
×21stories
+97ft-345ft

Overall

8009

Females

1046

F18-39

1046

5K→10K

3.1 - 6.2 mi

Top 29%
×5stories
+79ft-138ft

Overall

8225

Females

1086

F18-39

1086

10K→15K

6.2 - 9.3 mi

Top 28%
×3stories
+67ft-78ft

Overall

8009

Females

1046

F18-39

1046

15K→20K

9.3 - 12.4 mi

Top 26%
×5stories
+106ft-86ft

Overall

7424

Females

904

F18-39

904

20K→Half

12.4 - 13.1 mi

Top 28%
×2stories
+19ft-37ft

Overall

7918

Females

1077

F18-39

1077

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

7451

Females

1023

F18-39

1023

25K→30K

15.5 - 18.6 mi

Top 35%
×9stories
+181ft-148ft

Overall

9831

Females

2212

F18-39

2212

30K→20M

18.6 - 20.0 mi

Top 93%
×5stories
+64ft-50ft

Overall

26483

Females

11274

F18-39

11274

20M→21M

20.0 - 21.0 mi

Top 27%
×8stories
+106ft-24ft

Overall

7682

Females

1591

F18-39

1591

21M→35K

21.0 - 21.8 mi

Top 37%
×7stories
+17ft-86ft

Overall

10647

Females

2918

F18-39

2918

35K→23M

21.8 - 23.0 mi

Top 35%
×5stories
+23ft-63ft

Overall

9869

Females

2673

F18-39

2673

23M→24M

23.0 - 24.0 mi

Top 35%
×6stories
+12ft-82ft

Overall

9829

Females

2717

F18-39

2717

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

10315

Females

3079

F18-39

3079

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9764

Females

2890

F18-39

2890

25.2M→Finish

25.2 - 26.2 mi

Top 31%
×2stories
+22ft-21ft

Overall

8924

Females

2498

F18-39

2498

Passing Analysis

Category:
Athletes Passed
2180
Passed By
3850
Net Change
-1672
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8785
5K → 10K39288+304#8785#8481
10K → 15K27061+209#8481#8272
15K → 20K31622+294#8272#7978
20K → Half3419+15#7978#7963
Half → 25K18558+127#7963#7836
25K → 30K128334-206#7836#8042
30K → 20M33037-3036#8042#11078
20M → 21M24612+234#11078#10844
21M → 35K7044+26#10844#10818
35K → 23M16247+115#10818#10703
23M → 24M10235+67#10703#10636
24M → 40K8636+50#10636#10586
40K → 25.2M6320+43#10586#10543
25.2M → Finish12337+86#10543#10457
TOTALS21803850-1672
📊

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