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BOSTON MARATHON 2025

Brianne Mansfield

Bib: 28019•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Top 48%
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
27:59
Rank: #22433
Start → 5K
27:59 | 9:00/mi
10K· 6.21 mi
54:35
Rank: #21373 (+1060)
5K → 10K
26:36 | 8:34/mi
15K· 9.32 mi
1:20:41
Rank: #20515 (+858)
10K → 15K
26:06 | 8:24/mi
20K· 12.43 mi
1:46:46
Rank: #19833 (+682)
15K → 20K
26:05 | 8:24/mi
Half· 13.11 mi
1:52:27
Rank: #19744 (+89)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:12:43
Rank: #19175 (+569)
Half → 25K
20:16 | 8:22/mi
30K· 18.64 mi
2:39:45
Rank: #18569 (+606)
25K → 30K
27:02 | 8:42/mi
20M
2:51:35
Rank: #18294 (+275)
30K → 20M
11:50 | 8:42/mi
21M
3:00:29
Rank: #17987 (+307)
20M → 21M
8:54 | 8:54/mi
35K· 21.75 mi
3:06:36
Rank: #17803 (+184)
21M → 35K
6:07 | 8:11/mi
23M
3:17:07
Rank: #17475 (+328)
35K → 23M
10:31 | 8:24/mi
24M
3:25:15
Rank: #17233 (+242)
23M → 24M
8:08 | 8:08/mi
40K· 24.85 mi
3:32:20
Rank: #17044 (+189)
24M → 40K
7:05 | 8:17/mi
25.2M
3:35:23
Rank: #16931 (+113)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:43:17
Rank: #16698 (+233)
25.2M → Finish
7:54 | 7:45/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:52:27
Pace8:35 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:50:50
Pace8:27 /mi
📊Negative Split: 1.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:1627:599:0027:59
9:00
-
10K
6.21 mi12:11:5254:358:4726:36
8:34
-0:26
15K
9.32 mi12:37:581:20:418:3926:06
8:24
-0:10
20K
12.43 mi13:04:031:46:468:3526:05
8:24
0:00
Half
13.11 mi13:09:441:52:278:355:41
8:20
-0:04
25K
15.53 mi13:30:002:12:438:3320:16
8:22
+0:02
30K
18.64 mi13:57:022:39:458:3427:02
8:42
+0:20
20M
20.00 mi14:08:522:51:358:3511:50
8:42
0:00
21M
21.00 mi14:17:463:00:298:368:54
8:54
+0:12
35K
21.75 mi14:23:533:06:368:356:07
8:11
-0:43
23M
23.00 mi14:34:243:17:078:3410:31
8:24
+0:13
24M
24.00 mi14:42:323:25:158:338:08
8:08
-0:16
40K
24.85 mi14:49:373:32:208:337:05
8:17
+0:09
25.2M
25.20 mi14:52:403:35:238:333:03
8:51
+0:34
Finish
26.22 mi15:00:343:43:178:317:54
7:45
-1:06

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

7:45 /mi

Average Pace

8:31 /mi

Slowest Pace

9:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:57:53

53% of race

Time at Steady Pace

1:45:24

47% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:31 /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 mi11:45:1627:599:0027:59
9:00
#22433
10K
6.21 mi12:11:5254:358:4726:36
8:34
#21373
15K
9.32 mi12:37:581:20:418:3926:06
8:24
#20515
20K
12.43 mi13:04:031:46:468:3526:05
8:24
#19833
Half
13.11 mi13:09:441:52:278:355:41
8:20
#19744
25K
15.53 mi13:30:002:12:438:3320:16
8:22
#19175
30K
18.64 mi13:57:022:39:458:3427:02
8:42
#18569
20M
20.00 mi14:08:522:51:358:3511:50
8:42
#18294
21M
21.00 mi14:17:463:00:298:368:54
8:54
#17987
35K
21.75 mi14:23:533:06:368:356:07
8:11
#17803
23M
23.00 mi14:34:243:17:078:3410:31
8:24
#17475
24M
24.00 mi14:42:323:25:158:338:08
8:08
#17233
40K
24.85 mi14:49:373:32:208:337:05
8:17
#17044
25.2M
25.20 mi14:52:403:35:238:333:03
8:51
#16931
Finish
26.22 mi15:00:343:43:178:317:54
7:45
#16698
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi224338868886818715(Top 66%)6728(Top 55%)6728(Top 123%)
10K6.21 mi3.10 mi21373+10608256+6128256+61220156(Top 71%)7548(Top 62%)7548(Top 138%)
15K9.32 mi3.11 mi20515+8587759+4977759+49718715(Top 66%)6728(Top 55%)6728(Top 123%)
20K12.43 mi3.11 mi19833+6827381+3787381+37817532(Top 62%)6068(Top 50%)6068(Top 111%)
Half13.11 mi0.68 mi19744+897329+527329+5218134(Top 64%)6384(Top 52%)6384(Top 117%)
25K15.53 mi2.42 mi19175+5697013+3167013+31616303(Top 57%)5487(Top 45%)5487(Top 100%)
30K18.64 mi3.11 mi18569+6066695+3186695+31816021(Top 56%)5474(Top 45%)5474(Top 100%)
20M20.00 mi1.36 mi18294+2756579+1166579+11615150(Top 53%)5130(Top 42%)5130(Top 94%)
21M21.00 mi1.00 mi17987+3076423+1566423+15612976(Top 46%)4119(Top 34%)4119(Top 75%)
35K21.75 mi0.75 mi17803+1846333+906333+9013532(Top 48%)4463(Top 36%)4463(Top 82%)
23M23.00 mi1.25 mi17475+3286210+1236210+12312736(Top 45%)4134(Top 34%)4134(Top 76%)
24M24.00 mi1.00 mi17233+2426100+1106100+11012188(Top 43%)3904(Top 32%)3904(Top 71%)
40K24.85 mi0.85 mi17044+1896009+916009+9112112(Top 43%)3985(Top 33%)3985(Top 73%)
25.2M25.20 mi0.35 mi16931+1135960+495960+4911054(Top 39%)3548(Top 29%)3548(Top 65%)
Finish26.22 mi1.02 mi16698+2335847+1135847+11311148(Top 39%)3546(Top 29%)3546(Top 65%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 66%
×21stories
+97ft-345ft

Overall

18715

Females

6728

F18-39

6728

5K→10K

3.1 - 6.2 mi

Top 71%
×5stories
+79ft-138ft

Overall

20156

Females

7548

F18-39

7548

10K→15K

6.2 - 9.3 mi

Top 66%
×3stories
+67ft-78ft

Overall

18715

Females

6728

F18-39

6728

15K→20K

9.3 - 12.4 mi

Top 62%
×5stories
+106ft-86ft

Overall

17532

Females

6068

F18-39

6068

20K→Half

12.4 - 13.1 mi

Top 64%
×2stories
+19ft-37ft

Overall

18134

Females

6384

F18-39

6384

Half→25K

13.1 - 15.5 mi

Top 57%
×4stories
+66ft-88ft

Overall

16303

Females

5487

F18-39

5487

25K→30K

15.5 - 18.6 mi

Top 56%
×9stories
+181ft-148ft

Overall

16021

Females

5474

F18-39

5474

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

15150

Females

5130

F18-39

5130

20M→21M

20.0 - 21.0 mi

Top 46%
×8stories
+106ft-24ft

Overall

12976

Females

4119

F18-39

4119

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

13532

Females

4463

F18-39

4463

35K→23M

21.8 - 23.0 mi

Top 45%
×5stories
+23ft-63ft

Overall

12736

Females

4134

F18-39

4134

23M→24M

23.0 - 24.0 mi

Top 43%
×6stories
+12ft-82ft

Overall

12188

Females

3904

F18-39

3904

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

12112

Females

3985

F18-39

3985

40K→25.2M

24.9 - 25.2 mi

Top 39%
×1story
+13ft-16ft

Overall

11054

Females

3548

F18-39

3548

25.2M→Finish

25.2 - 26.2 mi

Top 39%
×2stories
+22ft-21ft

Overall

11148

Females

3546

F18-39

3546

Passing Analysis

Category:
Athletes Passed
5850
Passed By
115
Net Change
+5735
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22433
5K → 10K108323+1060#22433#21373
10K → 15K87416+858#21373#20515
15K → 20K6897+682#20515#19833
20K → Half978+89#19833#19744
Half → 25K5745+569#19744#19175
25K → 30K62216+606#19175#18569
30K → 20M28510+275#18569#18294
20M → 21M3125+307#18294#17987
21M → 35K1862+184#17987#17803
35K → 23M3324+328#17803#17475
23M → 24M2486+242#17475#17233
24M → 40K1956+189#17233#17044
40K → 25.2M1130+113#17044#16931
25.2M → Finish2407+233#16931#16698
TOTALS5850115+5735
📊

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