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BOSTON MARATHON 2025

Bernell Anstey

Bib: 20884•F

SK

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Masters (Masters Women)
#0 / 6759
Division (F50-54)
#0 / 1303
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
8:36/mi
26:43
↑ 97↓ 3451.5%
10K· 6.21 mi
8:37/mi
53:28
↑ 79↓ 1380.4%
15K· 9.32 mi
8:30/mi
1:19:53
↑ 67↓ 78
20K· 12.43 mi
8:35/mi
1:46:34
↑ 106↓ 860.1%
Half· 13.11 mi
8:23/mi
1:52:17
↑ 19↓ 370.5%
25K· 15.53 mi
8:35/mi
2:13:06
↑ 66↓ 880.2%
30K· 18.64 mi
9:05/mi
2:41:19
↑ 181↓ 1480.2%
20M
9:48/mi
2:54:38
↑ 64↓ 500.2%
21M
11:13/mi
3:05:51
↑ 106↓ 241.6%
35K· 21.75 mi
9:57/mi
3:13:18
↑ 17↓ 861.7%
23M
9:58/mi
3:25:47
↑ 23↓ 630.6%
24M
9:10/mi
3:34:57
↓ 821.3%
40K· 24.85 mi
8:58/mi
3:42:37
↓ 200.3%
25.2M
9:43/mi
3:45:58
↑ 13↓ 160.2%
Finish· 26.22 mi
8:21/mi
3:54:29
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:17
Pace8:34 /mi
2nd Half
Distance13.11 mi
Time2:02:12
Pace9:19 /mi
📊Positive Split: 8.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:3826:438:3626:43
8:36
-
10K
6.21 mi11:46:2353:288:3626:45
8:37
+0:01
15K
9.32 mi12:12:481:19:538:3426:25
8:30
-0:07
20K
12.43 mi12:39:291:46:348:3526:41
8:35
+0:05
Half
13.11 mi12:45:121:52:178:345:43
8:23
-0:12
25K
15.53 mi13:06:012:13:068:3420:49
8:35
+0:12
30K
18.64 mi13:34:142:41:198:3928:13
9:05
+0:30
20M
20.00 mi13:47:332:54:388:4413:19
9:48
+0:43
21M
21.00 mi13:58:463:05:518:5111:13
11:13
+1:25
35K
21.75 mi14:06:133:13:188:537:27
9:57
-1:16
23M
23.00 mi14:18:423:25:478:5712:29
9:58
+0:01
24M
24.00 mi14:27:523:34:578:579:10
9:10
-0:48
40K
24.85 mi14:35:323:42:378:577:40
8:58
-0:12
25.2M
25.20 mi14:38:533:45:588:583:21
9:43
+0:45
Finish
26.22 mi14:47:243:54:298:578:31
8:21
-1:22

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

8:21 /mi

Average Pace

8:57 /mi

Slowest Pace

11:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

40:39

17% of race

Time at Steady Pace

2:26:01

62% of race

Time at Slower Pace

47:49

20% of race

Average Pace: 8:57 /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 mi11:19:3826:438:3626:43
8:36
#20463
10K
6.21 mi11:46:2353:288:3626:45
8:37
#20419
15K
9.32 mi12:12:481:19:538:3426:25
8:30
#20084
20K
12.43 mi12:39:291:46:348:3526:41
8:35
#19743
Half
13.11 mi12:45:121:52:178:345:43
8:23
#19675
25K
15.53 mi13:06:012:13:068:3420:49
8:35
#19321
30K
18.64 mi13:34:142:41:198:3928:13
9:05
#19070
20M
20.00 mi13:47:332:54:388:4413:19
9:48
#19186
21M
21.00 mi13:58:463:05:518:5111:13
11:13
#19435
35K
21.75 mi14:06:133:13:188:537:27
9:57
#19574
23M
23.00 mi14:18:423:25:478:5712:29
9:58
#19642
24M
24.00 mi14:27:523:34:578:579:10
9:10
#19582
40K
24.85 mi14:35:323:42:378:577:40
8:58
#19453
25.2M
25.20 mi14:38:533:45:588:583:21
9:43
#19383
Finish
26.22 mi14:47:243:54:298:578:31
8:21
#19243
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi204637780778019349(Top 68%)7093(Top 58%)7093(Top 544%)
10K6.21 mi3.10 mi20419+447725+557725+5520409(Top 72%)7691(Top 63%)7691(Top 590%)
15K9.32 mi3.11 mi20084+3357518+2077518+20719349(Top 68%)7093(Top 58%)7093(Top 544%)
20K12.43 mi3.11 mi19743+3417330+1887330+18818790(Top 66%)6796(Top 56%)6796(Top 522%)
Half13.11 mi0.68 mi19675+687294+367294+3618546(Top 65%)6660(Top 54%)6660(Top 511%)
25K15.53 mi2.42 mi19321+3547101+1937101+19317744(Top 62%)6280(Top 51%)6280(Top 482%)
30K18.64 mi3.11 mi19070+2516998+1036998+10318114(Top 64%)6645(Top 54%)6645(Top 510%)
20M20.00 mi1.36 mi19186-1167085-877085-8720306(Top 71%)7964(Top 65%)7964(Top 611%)
21M21.00 mi1.00 mi19435-2497253-1687253-16821957(Top 77%)8943(Top 73%)8943(Top 686%)
35K21.75 mi0.75 mi19574-1397350-977350-9721790(Top 77%)8924(Top 73%)8924(Top 685%)
23M23.00 mi1.25 mi19642-687421-717421-7120393(Top 72%)8239(Top 67%)8239(Top 632%)
24M24.00 mi1.00 mi19582+607412+97412+918211(Top 64%)7150(Top 58%)7150(Top 549%)
40K24.85 mi0.85 mi19453+1297351+617351+6116159(Top 57%)6140(Top 50%)6140(Top 471%)
25.2M25.20 mi0.35 mi19383+707322+297322+2915788(Top 56%)5999(Top 49%)5999(Top 460%)
Finish26.22 mi1.02 mi19243+1407270+527270+5215335(Top 54%)5668(Top 46%)5668(Top 435%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

19349

Females

7093

F50-54

7093

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20409

Females

7691

F50-54

7691

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

19349

Females

7093

F50-54

7093

15K→20K

9.3 - 12.4 mi

Top 66%
×5story building
+106ft-86ft

Overall

18790

Females

6796

F50-54

6796

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

18546

Females

6660

F50-54

6660

Half→25K

13.1 - 15.5 mi

Top 62%
×4story building
+66ft-88ft

Overall

17744

Females

6280

F50-54

6280

25K→30K

15.5 - 18.6 mi

Top 64%
×9story building
+181ft-148ft

Overall

18114

Females

6645

F50-54

6645

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

20306

Females

7964

F50-54

7964

20M→21M

20.0 - 21.0 mi

Top 77%
×8story building
+106ft-24ft

Overall

21957

Females

8943

F50-54

8943

21M→35K

21.0 - 21.8 mi

Top 77%
×7story building
+17ft-86ft

Overall

21790

Females

8924

F50-54

8924

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

20393

Females

8239

F50-54

8239

23M→24M

23.0 - 24.0 mi

Top 64%
×6story building
+12ft-82ft

Overall

18211

Females

7150

F50-54

7150

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

16159

Females

6140

F50-54

6140

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

15788

Females

5999

F50-54

5999

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

15335

Females

5668

F50-54

5668

Passing Analysis

Category:
Athletes Passed
2543
Passed By
1323
Net Change
+1220
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20463
5K → 10K311267+44#20463#20419
10K → 15K38752+335#20419#20084
15K → 20K38544+341#20084#19743
20K → Half779+68#19743#19675
Half → 25K37622+354#19675#19321
25K → 30K355104+251#19321#19070
30K → 20M69185-116#19070#19186
20M → 21M40289-249#19186#19435
21M → 35K21160-139#19435#19574
35K → 23M67135-68#19574#19642
23M → 24M9939+60#19642#19582
24M → 40K1334+129#19582#19453
40K → 25.2M755+70#19453#19383
25.2M → Finish1488+140#19383#19243
TOTALS25431323+1220
📊

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