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BOSTON MARATHON 2025

Arianna Cozza

Bib: 30028•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 37%
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
27:35
Rank: #21892
Start → 5K
27:35 | 8:53/mi
10K· 6.21 mi
52:56
Rank: #19952 (+1940)
5K → 10K
25:21 | 8:10/mi
15K· 9.32 mi
1:17:45
Rank: #18669 (+1283)
10K → 15K
24:49 | 7:59/mi
20K· 12.43 mi
1:42:31
Rank: #17678 (+991)
15K → 20K
24:46 | 7:58/mi
Half· 13.11 mi
1:47:55
Rank: #17550 (+128)
20K → Half
5:24 | 7:55/mi
25K· 15.53 mi
2:07:23
Rank: #16961 (+589)
Half → 25K
19:28 | 8:02/mi
30K· 18.64 mi
2:32:41
Rank: #16157 (+804)
25K → 30K
25:18 | 8:09/mi
20M
2:43:47
Rank: #15778 (+379)
30K → 20M
11:06 | 8:10/mi
21M
2:52:13
Rank: #15400 (+378)
20M → 21M
8:26 | 8:26/mi
35K· 21.75 mi
2:58:08
Rank: #15226 (+174)
21M → 35K
5:55 | 7:55/mi
23M
3:08:26
Rank: #14969 (+257)
35K → 23M
10:18 | 8:14/mi
24M
3:16:38
Rank: #14833 (+136)
23M → 24M
8:12 | 8:12/mi
40K· 24.85 mi
3:23:40
Rank: #14701 (+132)
24M → 40K
7:02 | 8:14/mi
25.2M
3:26:42
Rank: #14611 (+90)
40K → 25.2M
3:02 | 8:48/mi
Finish· 26.22 mi
3:34:30
Rank: #14422 (+189)
25.2M → Finish
7:48 | 7:39/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:47:55
Pace8:14 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:46:35
Pace8:08 /mi
📊Negative Split: 1.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:48:5527:358:5327:35
8:53
-
10K
6.21 mi12:14:1652:568:3125:21
8:10
-0:43
15K
9.32 mi12:39:051:17:458:2124:49
7:59
-0:11
20K
12.43 mi13:03:511:42:318:1524:46
7:58
-0:01
Half
13.11 mi13:09:151:47:558:145:24
7:55
-0:03
25K
15.53 mi13:28:432:07:238:1219:28
8:02
+0:07
30K
18.64 mi13:54:012:32:418:1125:18
8:09
+0:07
20M
20.00 mi14:05:072:43:478:1111:06
8:10
+0:01
21M
21.00 mi14:13:332:52:138:128:26
8:26
+0:16
35K
21.75 mi14:19:282:58:088:115:55
7:55
-0:31
23M
23.00 mi14:29:463:08:268:1210:18
8:14
+0:19
24M
24.00 mi14:37:583:16:388:128:12
8:12
-0:02
40K
24.85 mi14:45:003:23:408:127:02
8:14
+0:02
25.2M
25.20 mi14:48:023:26:428:123:02
8:48
+0:34
Finish
26.22 mi14:55:503:34:308:117:48
7:39
-1:09

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

7:39 /mi

Average Pace

8:11 /mi

Slowest Pace

8:53 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:55:27

82% of race

Time at Steady Pace

39:03

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:11 /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 mi11:48:5527:358:5327:35
8:53
#21892
10K
6.21 mi12:14:1652:568:3125:21
8:10
#19952
15K
9.32 mi12:39:051:17:458:2124:49
7:59
#18669
20K
12.43 mi13:03:511:42:318:1524:46
7:58
#17678
Half
13.11 mi13:09:151:47:558:145:24
7:55
#17550
25K
15.53 mi13:28:432:07:238:1219:28
8:02
#16961
30K
18.64 mi13:54:012:32:418:1125:18
8:09
#16157
20M
20.00 mi14:05:072:43:478:1111:06
8:10
#15778
21M
21.00 mi14:13:332:52:138:128:26
8:26
#15400
35K
21.75 mi14:19:282:58:088:115:55
7:55
#15226
23M
23.00 mi14:29:463:08:268:1210:18
8:14
#14969
24M
24.00 mi14:37:583:16:388:128:12
8:12
#14833
40K
24.85 mi14:45:003:23:408:127:02
8:14
#14701
25.2M
25.20 mi14:48:023:26:428:123:02
8:48
#14611
Finish
26.22 mi14:55:503:34:308:117:48
7:39
#14422
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi218928564856415965(Top 56%)5120(Top 42%)5120(Top 94%)
10K6.21 mi3.10 mi19952+19407440+11247440+112417618(Top 62%)6066(Top 50%)6066(Top 111%)
15K9.32 mi3.11 mi18669+12836712+7286712+72815965(Top 56%)5120(Top 42%)5120(Top 94%)
20K12.43 mi3.11 mi17678+9916145+5676145+56714727(Top 52%)4499(Top 37%)4499(Top 82%)
Half13.11 mi0.68 mi17550+1286060+856060+8515269(Top 54%)4766(Top 39%)4766(Top 87%)
25K15.53 mi2.42 mi16961+5895738+3225738+32214145(Top 50%)4279(Top 35%)4279(Top 78%)
30K18.64 mi3.11 mi16157+8045315+4235315+42312410(Top 44%)3512(Top 29%)3512(Top 64%)
20M20.00 mi1.36 mi15778+3795139+1765139+17611654(Top 41%)3276(Top 27%)3276(Top 60%)
21M21.00 mi1.00 mi15400+3784950+1894950+18910108(Top 36%)2674(Top 22%)2674(Top 49%)
35K21.75 mi0.75 mi15226+1744865+854865+8511707(Top 41%)3509(Top 29%)3509(Top 64%)
23M23.00 mi1.25 mi14969+2574750+1154750+11511572(Top 41%)3527(Top 29%)3527(Top 64%)
24M24.00 mi1.00 mi14833+1364705+454705+4512605(Top 44%)4116(Top 34%)4116(Top 75%)
40K24.85 mi0.85 mi14701+1324663+424663+4211758(Top 41%)3793(Top 31%)3793(Top 69%)
25.2M25.20 mi0.35 mi14611+904621+424621+4210723(Top 38%)3379(Top 28%)3379(Top 62%)
Finish26.22 mi1.02 mi14422+1894549+724549+7210402(Top 37%)3188(Top 26%)3188(Top 58%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 56%
×21stories
+97ft-345ft

Overall

15965

Females

5120

F18-39

5120

5K→10K

3.1 - 6.2 mi

Top 62%
×5stories
+79ft-138ft

Overall

17618

Females

6066

F18-39

6066

10K→15K

6.2 - 9.3 mi

Top 56%
×3stories
+67ft-78ft

Overall

15965

Females

5120

F18-39

5120

15K→20K

9.3 - 12.4 mi

Top 52%
×5stories
+106ft-86ft

Overall

14727

Females

4499

F18-39

4499

20K→Half

12.4 - 13.1 mi

Top 54%
×2stories
+19ft-37ft

Overall

15269

Females

4766

F18-39

4766

Half→25K

13.1 - 15.5 mi

Top 50%
×4stories
+66ft-88ft

Overall

14145

Females

4279

F18-39

4279

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

12410

Females

3512

F18-39

3512

30K→20M

18.6 - 20.0 mi

Top 41%
×5stories
+64ft-50ft

Overall

11654

Females

3276

F18-39

3276

20M→21M

20.0 - 21.0 mi

Top 36%
×8stories
+106ft-24ft

Overall

10108

Females

2674

F18-39

2674

21M→35K

21.0 - 21.8 mi

Top 41%
×7stories
+17ft-86ft

Overall

11707

Females

3509

F18-39

3509

35K→23M

21.8 - 23.0 mi

Top 41%
×5stories
+23ft-63ft

Overall

11572

Females

3527

F18-39

3527

23M→24M

23.0 - 24.0 mi

Top 44%
×6stories
+12ft-82ft

Overall

12605

Females

4116

F18-39

4116

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

11758

Females

3793

F18-39

3793

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10723

Females

3379

F18-39

3379

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

10402

Females

3188

F18-39

3188

Passing Analysis

Category:
Athletes Passed
7546
Passed By
76
Net Change
+7470
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21892
5K → 10K19444+1940#21892#19952
10K → 15K12852+1283#19952#18669
15K → 20K9910+991#18669#17678
20K → Half1313+128#17678#17550
Half → 25K5934+589#17550#16961
25K → 30K8095+804#16961#16157
30K → 20M3834+379#16157#15778
20M → 21M3802+378#15778#15400
21M → 35K1784+174#15400#15226
35K → 23M2658+257#15226#14969
23M → 24M15317+136#14969#14833
24M → 40K14513+132#14833#14701
40K → 25.2M933+90#14701#14611
25.2M → Finish1967+189#14611#14422
TOTALS754676+7470
📊

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