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BOSTON MARATHON 2025

Costanza Landini

Bib: 16097•F

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 33%
Gender (Female)
#0 / 12228
Top 16%
Division (F18-39)
#0 / 5469
Top 29%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:03
Rank: #11527
Start → 5K
23:03 | 7:25/mi
10K· 6.21 mi
46:26
Rank: #11890 (-363)
5K → 10K
23:23 | 7:32/mi
15K· 9.32 mi
1:09:50
Rank: #11918 (-28)
10K → 15K
23:24 | 7:32/mi
20K· 12.43 mi
1:33:17
Rank: #11680 (+238)
15K → 20K
23:27 | 7:33/mi
Half· 13.11 mi
1:38:20
Rank: #11649 (+31)
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:56:26
Rank: #11291 (+358)
Half → 25K
18:06 | 7:28/mi
30K· 18.64 mi
2:20:06
Rank: #10723 (+568)
25K → 30K
23:40 | 7:37/mi
20M
2:30:21
Rank: #10405 (+318)
30K → 20M
10:15 | 7:33/mi
21M
2:38:28
Rank: #10216 (+189)
20M → 21M
8:07 | 8:07/mi
35K· 21.75 mi
2:43:55
Rank: #10061 (+155)
21M → 35K
5:27 | 7:17/mi
23M
2:53:24
Rank: #9837 (+224)
35K → 23M
9:29 | 7:34/mi
24M
3:00:59
Rank: #9737 (+100)
23M → 24M
7:35 | 7:35/mi
40K· 24.85 mi
3:07:33
Rank: #9621 (+116)
24M → 40K
6:34 | 7:41/mi
25.2M
3:10:24
Rank: #9563 (+58)
40K → 25.2M
2:51 | 8:16/mi
Finish· 26.22 mi
3:17:47
Rank: #9446 (+117)
25.2M → Finish
7:23 | 7:15/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:20
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:39:27
Pace7:35 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:56:4023:037:2523:03
7:25
-
10K
6.21 mi11:20:0346:267:2823:23
7:32
+0:07
15K
9.32 mi11:43:271:09:507:3023:24
7:32
0:00
20K
12.43 mi12:06:541:33:177:3023:27
7:33
+0:01
Half
13.11 mi12:11:571:38:207:305:03
7:24
-0:09
25K
15.53 mi12:30:031:56:267:3018:06
7:28
+0:04
30K
18.64 mi12:53:432:20:067:3123:40
7:37
+0:09
20M
20.00 mi13:03:582:30:217:3110:15
7:33
-0:04
21M
21.00 mi13:12:052:38:287:338:07
8:07
+0:34
35K
21.75 mi13:17:322:43:557:325:27
7:17
-0:50
23M
23.00 mi13:27:012:53:247:329:29
7:34
+0:17
24M
24.00 mi13:34:363:00:597:327:35
7:35
+0:01
40K
24.85 mi13:41:103:07:337:336:34
7:41
+0:06
25.2M
25.20 mi13:44:013:10:247:332:51
8:16
+0:35
Finish
26.22 mi13:51:243:17:477:337:23
7:15
-1:01

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

7:15 /mi

Average Pace

7:33 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:49

94% of race

Time at Steady Pace

10:58

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:33 /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 mi10:56:4023:037:2523:03
7:25
#11527
10K
6.21 mi11:20:0346:267:2823:23
7:32
#11890
15K
9.32 mi11:43:271:09:507:3023:24
7:32
#11918
20K
12.43 mi12:06:541:33:177:3023:27
7:33
#11680
Half
13.11 mi12:11:571:38:207:305:03
7:24
#11649
25K
15.53 mi12:30:031:56:267:3018:06
7:28
#11291
30K
18.64 mi12:53:432:20:067:3123:40
7:37
#10723
20M
20.00 mi13:03:582:30:217:3110:15
7:33
#10405
21M
21.00 mi13:12:052:38:287:338:07
8:07
#10216
35K
21.75 mi13:17:322:43:557:325:27
7:17
#10061
23M
23.00 mi13:27:012:53:247:329:29
7:34
#9837
24M
24.00 mi13:34:363:00:597:327:35
7:35
#9737
40K
24.85 mi13:41:103:07:337:336:34
7:41
#9621
25.2M
25.20 mi13:44:013:10:247:332:51
8:16
#9563
Finish
26.22 mi13:51:243:17:477:337:23
7:15
#9446
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi115272537253712054(Top 42%)2930(Top 24%)2930(Top 54%)
10K6.21 mi3.10 mi11890-3632748-2112748-21112340(Top 43%)2992(Top 24%)2992(Top 55%)
15K9.32 mi3.11 mi11918-282779-312779-3112054(Top 42%)2930(Top 24%)2930(Top 54%)
20K12.43 mi3.11 mi11680+2382702+772702+7711150(Top 39%)2551(Top 21%)2551(Top 47%)
Half13.11 mi0.68 mi11649+312683+192683+1910930(Top 38%)2372(Top 19%)2372(Top 43%)
25K15.53 mi2.42 mi11291+3582533+1502533+1509695(Top 34%)1972(Top 16%)1972(Top 36%)
30K18.64 mi3.11 mi10723+5682321+2122321+2128599(Top 30%)1645(Top 13%)1645(Top 30%)
20M20.00 mi1.36 mi10405+3182200+1212200+1217347(Top 26%)1293(Top 11%)1293(Top 24%)
21M21.00 mi1.00 mi10216+1892149+512149+518083(Top 28%)1765(Top 14%)1765(Top 32%)
35K21.75 mi0.75 mi10061+1552097+522097+527205(Top 25%)1382(Top 11%)1382(Top 25%)
23M23.00 mi1.25 mi9837+2242028+692028+697107(Top 25%)1451(Top 12%)1451(Top 27%)
24M24.00 mi1.00 mi9737+1002014+142014+148327(Top 29%)2019(Top 17%)2019(Top 37%)
40K24.85 mi0.85 mi9621+1161990+241990+247993(Top 28%)1985(Top 16%)1985(Top 36%)
25.2M25.20 mi0.35 mi9563+581979+111979+117527(Top 26%)1867(Top 15%)1867(Top 34%)
Finish26.22 mi1.02 mi9446+1171966+131966+137401(Top 26%)1821(Top 15%)1821(Top 33%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

12054

Females

2930

F18-39

2930

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

12340

Females

2992

F18-39

2992

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

12054

Females

2930

F18-39

2930

15K→20K

9.3 - 12.4 mi

Top 39%
×5stories
+106ft-86ft

Overall

11150

Females

2551

F18-39

2551

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

10930

Females

2372

F18-39

2372

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9695

Females

1972

F18-39

1972

25K→30K

15.5 - 18.6 mi

Top 30%
×9stories
+181ft-148ft

Overall

8599

Females

1645

F18-39

1645

30K→20M

18.6 - 20.0 mi

Top 26%
×5stories
+64ft-50ft

Overall

7347

Females

1293

F18-39

1293

20M→21M

20.0 - 21.0 mi

Top 28%
×8stories
+106ft-24ft

Overall

8083

Females

1765

F18-39

1765

21M→35K

21.0 - 21.8 mi

Top 25%
×7stories
+17ft-86ft

Overall

7205

Females

1382

F18-39

1382

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

7107

Females

1451

F18-39

1451

23M→24M

23.0 - 24.0 mi

Top 29%
×6stories
+12ft-82ft

Overall

8327

Females

2019

F18-39

2019

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7993

Females

1985

F18-39

1985

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7527

Females

1867

F18-39

1867

25.2M→Finish

25.2 - 26.2 mi

Top 26%
×2stories
+22ft-21ft

Overall

7401

Females

1821

F18-39

1821

Passing Analysis

Category:
Athletes Passed
3021*
Passed By
940
Net Change
+2081
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11527
5K → 10K119482-363#11527#11890
10K → 15K165193-28#11890#11918
15K → 20K31678+238#11918#11680
20K → Half4918+31#11680#11649
Half → 25K37012+358#11649#11291
25K → 30K59123+568#11291#10723
30K → 20M3235+318#10723#10405
20M → 21M20920+189#10405#10216
21M → 35K1627+155#10216#10061
35K → 23M242*18+224#10061#9837
23M → 24M13131+100#9837#9737
24M → 40K13418+116#9737#9621
40K → 25.2M635+58#9621#9563
25.2M → Finish14730+117#9563#9446
TOTALS3021*940+2081

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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