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BOSTON MARATHON 2025

Sabrina Casu

Bib: 13770•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 36%
Gender (Female)
#0 / 12228
Top 20%
Masters (Masters Women)
#0 / 6759
Top 8%
Division (F40-44)
#0 / 1718
Top 18%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:34
Rank: #9993
Start → 5K
22:34 | 7:16/mi
10K· 6.21 mi
45:02
Rank: #9848 (+145)
5K → 10K
22:28 | 7:14/mi
15K· 9.32 mi
1:07:36
Rank: #9764 (+84)
10K → 15K
22:34 | 7:16/mi
20K· 12.43 mi
1:30:27
Rank: #9671 (+93)
15K → 20K
22:51 | 7:21/mi
Half· 13.11 mi
1:35:29
Rank: #9723 (-52)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:53:46
Rank: #9756 (-33)
Half → 25K
18:17 | 7:32/mi
30K· 18.64 mi
2:18:30
Rank: #9948 (-192)
25K → 30K
24:44 | 7:58/mi
20M
2:29:28
Rank: #9982 (-34)
30K → 20M
10:58 | 8:04/mi
21M
2:38:17
Rank: #10139 (-157)
20M → 21M
8:49 | 8:49/mi
35K· 21.75 mi
2:44:08
Rank: #10151 (-12)
21M → 35K
5:51 | 7:49/mi
23M
2:54:21
Rank: #10191 (-40)
35K → 23M
10:13 | 8:10/mi
24M
3:02:18
Rank: #10185 (+6)
23M → 24M
7:57 | 7:57/mi
40K· 24.85 mi
3:09:18
Rank: #10200 (-15)
24M → 40K
7:00 | 8:11/mi
25.2M
3:12:31
Rank: #10261 (-61)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:20:45
Rank: #10358 (-97)
25.2M → Finish
8:14 | 8:05/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:29
Pace7:17 /mi
2nd Half
Distance13.11 mi
Time1:45:16
Pace8:02 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3522:347:1622:34
7:16
-
10K
6.21 mi11:14:0345:027:1522:28
7:14
-0:02
15K
9.32 mi11:36:371:07:367:1522:34
7:16
+0:02
20K
12.43 mi11:59:281:30:277:1722:51
7:21
+0:05
Half
13.11 mi12:04:301:35:297:175:02
7:23
+0:02
25K
15.53 mi12:22:471:53:467:1918:17
7:32
+0:09
30K
18.64 mi12:47:312:18:307:2624:44
7:58
+0:26
20M
20.00 mi12:58:292:29:287:2810:58
8:04
+0:06
21M
21.00 mi13:07:182:38:177:328:49
8:49
+0:45
35K
21.75 mi13:13:092:44:087:335:51
7:49
-1:00
23M
23.00 mi13:23:222:54:217:3510:13
8:10
+0:21
24M
24.00 mi13:31:193:02:187:367:57
7:57
-0:13
40K
24.85 mi13:38:193:09:187:377:00
8:11
+0:14
25.2M
25.20 mi13:41:323:12:317:383:13
9:20
+1:09
Finish
26.22 mi13:49:463:20:457:408:14
8:05
-1:15

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

7:14 /mi

Average Pace

7:40 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:46

57% of race

Time at Steady Pace

1:14:57

37% of race

Time at Slower Pace

12:02

6% of race

Average Pace: 7:39 /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 mi10:51:3522:347:1622:34
7:16
#9993
10K
6.21 mi11:14:0345:027:1522:28
7:14
#9848
15K
9.32 mi11:36:371:07:367:1522:34
7:16
#9764
20K
12.43 mi11:59:281:30:277:1722:51
7:21
#9671
Half
13.11 mi12:04:301:35:297:175:02
7:23
#9723
25K
15.53 mi12:22:471:53:467:1918:17
7:32
#9756
30K
18.64 mi12:47:312:18:307:2624:44
7:58
#9948
20M
20.00 mi12:58:292:29:287:2810:58
8:04
#9982
21M
21.00 mi13:07:182:38:177:328:49
8:49
#10139
35K
21.75 mi13:13:092:44:087:335:51
7:49
#10151
23M
23.00 mi13:23:222:54:217:3510:13
8:10
#10191
24M
24.00 mi13:31:193:02:187:367:57
7:57
#10185
40K
24.85 mi13:38:193:09:187:377:00
8:11
#10200
25.2M
25.20 mi13:41:323:12:317:383:13
9:20
#10261
Finish
26.22 mi13:49:463:20:457:408:14
8:05
#10358
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi9993180918099655(Top 34%)1736(Top 14%)1736(Top 101%)
10K6.21 mi3.10 mi9848+1451734+751734+759728(Top 34%)1702(Top 14%)1702(Top 99%)
15K9.32 mi3.11 mi9764+841726+81726+89655(Top 34%)1736(Top 14%)1736(Top 101%)
20K12.43 mi3.11 mi9671+931725+11725+19479(Top 33%)1732(Top 14%)1732(Top 101%)
Half13.11 mi0.68 mi9723-521746-211746-2110581(Top 37%)2246(Top 18%)2246(Top 131%)
25K15.53 mi2.42 mi9756-331794-481794-4810275(Top 36%)2230(Top 18%)2230(Top 130%)
30K18.64 mi3.11 mi9948-1921935-1411935-14111084(Top 39%)2835(Top 23%)2835(Top 165%)
20M20.00 mi1.36 mi9982-341979-441979-4410863(Top 38%)2879(Top 24%)2879(Top 168%)
21M21.00 mi1.00 mi10139-1572108-1292108-12912342(Top 43%)3793(Top 31%)3793(Top 221%)
35K21.75 mi0.75 mi10151-122139-312139-3110905(Top 38%)3087(Top 25%)3087(Top 180%)
23M23.00 mi1.25 mi10191-402206-672206-6711077(Top 39%)3279(Top 27%)3279(Top 191%)
24M24.00 mi1.00 mi10185+62235-292235-2910835(Top 38%)3234(Top 26%)3234(Top 188%)
40K24.85 mi0.85 mi10200-152279-442279-4411425(Top 40%)3634(Top 30%)3634(Top 212%)
25.2M25.20 mi0.35 mi10261-612321-422321-4213481(Top 47%)4790(Top 39%)4790(Top 279%)
Finish26.22 mi1.02 mi10358-972399-782399-7813377(Top 47%)4656(Top 38%)4656(Top 271%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9655

Females

1736

F40-44

1736

5K→10K

3.1 - 6.2 mi

Top 34%
×5stories
+79ft-138ft

Overall

9728

Females

1702

F40-44

1702

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9655

Females

1736

F40-44

1736

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

9479

Females

1732

F40-44

1732

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

10581

Females

2246

F40-44

2246

Half→25K

13.1 - 15.5 mi

Top 36%
×4stories
+66ft-88ft

Overall

10275

Females

2230

F40-44

2230

25K→30K

15.5 - 18.6 mi

Top 39%
×9stories
+181ft-148ft

Overall

11084

Females

2835

F40-44

2835

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10863

Females

2879

F40-44

2879

20M→21M

20.0 - 21.0 mi

Top 43%
×8stories
+106ft-24ft

Overall

12342

Females

3793

F40-44

3793

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10905

Females

3087

F40-44

3087

35K→23M

21.8 - 23.0 mi

Top 39%
×5stories
+23ft-63ft

Overall

11077

Females

3279

F40-44

3279

23M→24M

23.0 - 24.0 mi

Top 38%
×6stories
+12ft-82ft

Overall

10835

Females

3234

F40-44

3234

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11425

Females

3634

F40-44

3634

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13481

Females

4790

F40-44

4790

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

13377

Females

4656

F40-44

4656

Passing Analysis

Category:
Athletes Passed
1618
Passed By
1978
Net Change
-365
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9993
5K → 10K309163+145#9993#9848
10K → 15K214129+84#9848#9764
15K → 20K224131+93#9764#9671
20K → Half1769-52#9671#9723
Half → 25K144177-33#9723#9756
25K → 30K165357-192#9756#9948
30K → 20M111144-34#9948#9982
20M → 21M59214-157#9982#10139
21M → 35K5971-12#10139#10151
35K → 23M88128-40#10151#10191
23M → 24M8680+6#10191#10185
24M → 40K7287-15#10185#10200
40K → 25.2M2182-61#10200#10261
25.2M → Finish49146-97#10261#10358
TOTALS16181978-365
📊

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