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BOSTON MARATHON 2025

Cassandra Barrett

Bib: 17143•F

AZ

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

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
7:29/mi
23:15
↑ 97↓ 3451.5%
10K· 6.21 mi
7:29/mi
46:30
↑ 79↓ 1380.4%
15K· 9.32 mi
7:31/mi
1:09:52
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:33:21
↑ 106↓ 860.1%
Half· 13.11 mi
7:23/mi
1:38:23
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:56:26
↑ 66↓ 880.2%
30K· 18.64 mi
7:44/mi
2:20:28
↑ 181↓ 1480.2%
20M
7:56/mi
2:31:15
↑ 64↓ 500.2%
21M
8:44/mi
2:39:59
↑ 106↓ 241.6%
35K· 21.75 mi
7:38/mi
2:45:42
↑ 17↓ 861.7%
23M
8:07/mi
2:55:52
↑ 23↓ 630.6%
24M
7:44/mi
3:03:36
↓ 821.3%
40K· 24.85 mi
7:45/mi
3:10:14
↓ 200.3%
25.2M
8:33/mi
3:13:11
↑ 13↓ 160.2%
Finish· 26.22 mi
7:45/mi
3:21:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:23
Pace7:30 /mi
2nd Half
Distance13.11 mi
Time1:42:42
Pace7:50 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:4423:157:2923:15
7:29
-
10K
6.21 mi11:36:5946:307:2923:15
7:29
0:00
15K
9.32 mi12:00:211:09:527:3023:22
7:31
+0:02
20K
12.43 mi12:23:501:33:217:3123:29
7:34
+0:03
Half
13.11 mi12:28:521:38:237:305:02
7:23
-0:11
25K
15.53 mi12:46:551:56:267:3018:03
7:27
+0:04
30K
18.64 mi13:10:572:20:287:3224:02
7:44
+0:17
20M
20.00 mi13:21:442:31:157:3410:47
7:56
+0:12
21M
21.00 mi13:30:282:39:597:378:44
8:44
+0:48
35K
21.75 mi13:36:112:45:427:375:43
7:38
-1:06
23M
23.00 mi13:46:212:55:527:3910:10
8:07
+0:29
24M
24.00 mi13:54:053:03:367:397:44
7:44
-0:23
40K
24.85 mi14:00:433:10:147:396:38
7:45
+0:01
25.2M
25.20 mi14:03:403:13:117:402:57
8:33
+0:48
Finish
26.22 mi14:11:343:21:057:407:54
7:45
-0:48

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

7:23 /mi

Average Pace

7:40 /mi

Slowest Pace

8:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:09:24

94% of race

Time at Steady Pace

2:57

1% of race

Time at Slower Pace

8:44

4% 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 mi11:13:4423:157:2923:15
7:29
#12098
10K
6.21 mi11:36:5946:307:2923:15
7:29
#11992
15K
9.32 mi12:00:211:09:527:3023:22
7:31
#11950
20K
12.43 mi12:23:501:33:217:3123:29
7:34
#11736
Half
13.11 mi12:28:521:38:237:305:02
7:23
#11685
25K
15.53 mi12:46:551:56:267:3018:03
7:27
#11292
30K
18.64 mi13:10:572:20:287:3224:02
7:44
#10917
20M
20.00 mi13:21:442:31:157:3410:47
7:56
#10794
21M
21.00 mi13:30:282:39:597:378:44
8:44
#10822
35K
21.75 mi13:36:112:45:427:375:43
7:38
#10765
23M
23.00 mi13:46:212:55:527:3910:10
8:07
#10713
24M
24.00 mi13:54:053:03:367:397:44
7:44
#10626
40K
24.85 mi14:00:433:10:147:396:38
7:45
#10519
25.2M
25.20 mi14:03:403:13:117:402:57
8:33
#10470
Finish
26.22 mi14:11:343:21:057:407:54
7:45
#10462
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi120982847284711954(Top 42%)2872(Top 23%)2872(Top 53%)
10K6.21 mi3.10 mi11992+1062808+392808+3911970(Top 42%)2802(Top 23%)2802(Top 51%)
15K9.32 mi3.11 mi11950+422802+62802+611954(Top 42%)2872(Top 23%)2872(Top 53%)
20K12.43 mi3.11 mi11736+2142734+682734+6811241(Top 40%)2599(Top 21%)2599(Top 48%)
Half13.11 mi0.68 mi11685+512706+282706+2810753(Top 38%)2318(Top 19%)2318(Top 42%)
25K15.53 mi2.42 mi11292+3932534+1722534+1729525(Top 34%)1892(Top 15%)1892(Top 35%)
30K18.64 mi3.11 mi10917+3752422+1122422+1129459(Top 33%)2031(Top 17%)2031(Top 37%)
20M20.00 mi1.36 mi10794+1232406+162406+1610031(Top 35%)2447(Top 20%)2447(Top 45%)
21M21.00 mi1.00 mi10822-282459-532459-5311891(Top 42%)3528(Top 29%)3528(Top 65%)
35K21.75 mi0.75 mi10765+572448+112448+119671(Top 34%)2446(Top 20%)2446(Top 45%)
23M23.00 mi1.25 mi10713+522468-202468-2010879(Top 38%)3166(Top 26%)3166(Top 58%)
24M24.00 mi1.00 mi10626+872453+152453+159368(Top 33%)2501(Top 20%)2501(Top 46%)
40K24.85 mi0.85 mi10519+1072422+312422+318518(Top 30%)2233(Top 18%)2233(Top 41%)
25.2M25.20 mi0.35 mi10470+492420+22420+29169(Top 32%)2606(Top 21%)2606(Top 48%)
Finish26.22 mi1.02 mi10462+82450-302450-3011106(Top 39%)3504(Top 29%)3504(Top 64%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21story building
+97ft-345ft

Overall

11954

Females

2872

F18-39

2872

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11970

Females

2802

F18-39

2802

10K→15K

6.2 - 9.3 mi

Top 42%
×3story building
+67ft-78ft

Overall

11954

Females

2872

F18-39

2872

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11241

Females

2599

F18-39

2599

20K→Half

12.4 - 13.1 mi

Top 38%
×2story building
+19ft-37ft

Overall

10753

Females

2318

F18-39

2318

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9525

Females

1892

F18-39

1892

25K→30K

15.5 - 18.6 mi

Top 33%
×9story building
+181ft-148ft

Overall

9459

Females

2031

F18-39

2031

30K→20M

18.6 - 20.0 mi

Top 35%
×5story building
+64ft-50ft

Overall

10031

Females

2447

F18-39

2447

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

11891

Females

3528

F18-39

3528

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

9671

Females

2446

F18-39

2446

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

10879

Females

3166

F18-39

3166

23M→24M

23.0 - 24.0 mi

Top 33%
×6story building
+12ft-82ft

Overall

9368

Females

2501

F18-39

2501

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8518

Females

2233

F18-39

2233

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

9169

Females

2606

F18-39

2606

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2story building
+22ft-21ft

Overall

11106

Females

3504

F18-39

3504

Passing Analysis

Category:
Athletes Passed
2568
Passed By
932
Net Change
+1636
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12098
5K → 10K306200+106#12098#11992
10K → 15K203161+42#11992#11950
15K → 20K29884+214#11950#11736
20K → Half6211+51#11736#11685
Half → 25K4007+393#11685#11292
25K → 30K43257+375#11292#10917
30K → 20M17855+123#10917#10794
20M → 21M87115-28#10794#10822
21M → 35K8629+57#10822#10765
35K → 23M13280+52#10765#10713
23M → 24M11427+87#10713#10626
24M → 40K12720+107#10626#10519
40K → 25.2M6516+49#10519#10470
25.2M → Finish7870+8#10470#10462
TOTALS2568932+1636
📊

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