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BOSTON MARATHON 2025

Arielle Knutson

Bib: 20880•F

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 46%
Gender (Female)
#0 / 12228
Top 32%
Masters (Masters Women)
#0 / 6759
Top 17%
Division (F40-44)
#0 / 1718
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:17
Rank: #14965
Start → 5K
7:49/mi
24:17 split
10K· 6.21 mi
48:31
Rank: #14862 (+103)
5K → 10K
7:48/mi
24:14 split
15K· 9.32 mi
1:12:53
Rank: #14806 (+56)
10K → 15K
7:51/mi
24:22 split
20K· 12.43 mi
1:37:21
Rank: #14519 (+287)
15K → 20K
7:53/mi
24:28 split
Half· 13.11 mi
1:42:38
Rank: #14471 (+48)
20K → Half
7:45/mi
5:17 split
25K· 15.53 mi
2:01:47
Rank: #14219 (+252)
Half → 25K
7:54/mi
19:09 split
30K· 18.64 mi
2:27:19
Rank: #13904 (+315)
25K → 30K
8:13/mi
25:32 split
20M
2:38:31
Rank: #13723 (+181)
30K → 20M
8:15/mi
11:12 split
21M
2:47:18
Rank: #13603 (+120)
20M → 21M
8:47/mi
8:47 split
35K· 21.75 mi
2:53:15
Rank: #13526 (+77)
21M → 35K
7:57/mi
5:57 split
23M
3:03:27
Rank: #13343 (+183)
35K → 23M
8:09/mi
10:12 split
24M
3:11:37
Rank: #13279 (+64)
23M → 24M
8:10/mi
8:10 split
40K· 24.85 mi
3:18:40
Rank: #13215 (+64)
24M → 40K
8:15/mi
7:03 split
25.2M
3:21:29
Rank: #13106 (+109)
40K → 25.2M
8:11/mi
2:49 split
Finish· 26.22 mi
3:29:50
Rank: #13168 (-62)
25.2M → Finish
8:11/mi
8:21 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:38
Pace7:50 /mi
2nd Half
Distance13.11 mi
Time1:47:12
Pace8:11 /mi
📊Positive Split: 4.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:1024:177:4924:17
7:49
-
10K
6.21 mi11:41:2448:317:4824:14
7:48
-0:01
15K
9.32 mi12:05:461:12:537:4924:22
7:51
+0:03
20K
12.43 mi12:30:141:37:217:5024:28
7:53
+0:02
Half
13.11 mi12:35:311:42:387:505:17
7:45
-0:08
25K
15.53 mi12:54:402:01:477:5019:09
7:54
+0:09
30K
18.64 mi13:20:122:27:197:5425:32
8:13
+0:19
20M
20.00 mi13:31:242:38:317:5611:12
8:15
+0:02
21M
21.00 mi13:40:112:47:187:588:47
8:47
+0:32
35K
21.75 mi13:46:082:53:157:585:57
7:57
-0:50
23M
23.00 mi13:56:203:03:277:5910:12
8:09
+0:12
24M
24.00 mi14:04:303:11:377:598:10
8:10
+0:01
40K
24.85 mi14:11:333:18:408:007:03
8:15
+0:05
25.2M
25.20 mi14:14:223:21:298:002:49
8:11
-0:04
Finish
26.22 mi14:22:433:29:508:018:21
8:11
0:00

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

8:01 /mi

Slowest Pace

8:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:03

96% of race

Time at Steady Pace

8:47

4% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:00 /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 mi11:17:1024:177:4924:17
7:49
#14965
10K
6.21 mi11:41:2448:317:4824:14
7:48
#14862
15K
9.32 mi12:05:461:12:537:4924:22
7:51
#14806
20K
12.43 mi12:30:141:37:217:5024:28
7:53
#14519
Half
13.11 mi12:35:311:42:387:505:17
7:45
#14471
25K
15.53 mi12:54:402:01:477:5019:09
7:54
#14219
30K
18.64 mi13:20:122:27:197:5425:32
8:13
#13904
20M
20.00 mi13:31:242:38:317:5611:12
8:15
#13723
21M
21.00 mi13:40:112:47:187:588:47
8:47
#13603
35K
21.75 mi13:46:082:53:157:585:57
7:57
#13526
23M
23.00 mi13:56:203:03:277:5910:12
8:09
#13343
24M
24.00 mi14:04:303:11:377:598:10
8:10
#13279
40K
24.85 mi14:11:333:18:408:007:03
8:15
#13215
25.2M
25.20 mi14:14:223:21:298:002:49
8:11
#13106
Finish
26.22 mi14:22:433:29:508:018:21
8:11
#13168
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi149654506450614753(Top 52%)4445(Top 36%)4445(Top 259%)
10K6.21 mi3.10 mi14862+1034469+374469+3714816(Top 52%)4435(Top 36%)4435(Top 258%)
15K9.32 mi3.11 mi14806+564437+324437+3214753(Top 52%)4445(Top 36%)4445(Top 259%)
20K12.43 mi3.11 mi14519+2874300+1374300+13713894(Top 49%)4031(Top 33%)4031(Top 235%)
Half13.11 mi0.68 mi14471+484281+194281+1913830(Top 49%)3969(Top 32%)3969(Top 231%)
25K15.53 mi2.42 mi14219+2524168+1134168+11313095(Top 46%)3724(Top 30%)3724(Top 217%)
30K18.64 mi3.11 mi13904+3154050+1184050+11812966(Top 46%)3810(Top 31%)3810(Top 222%)
20M20.00 mi1.36 mi13723+1813978+723978+7212104(Top 43%)3508(Top 29%)3508(Top 204%)
21M21.00 mi1.00 mi13603+1203951+273951+2712223(Top 43%)3720(Top 30%)3720(Top 217%)
35K21.75 mi0.75 mi13526+773926+253926+2511987(Top 42%)3644(Top 30%)3644(Top 212%)
23M23.00 mi1.25 mi13343+1833863+633863+6311061(Top 39%)3263(Top 27%)3263(Top 190%)
24M24.00 mi1.00 mi13279+643851+123851+1212378(Top 44%)3984(Top 33%)3984(Top 232%)
40K24.85 mi0.85 mi13215+643849+23849+211866(Top 42%)3853(Top 32%)3853(Top 224%)
25.2M25.20 mi0.35 mi13106+1093801+483801+487013(Top 25%)1684(Top 14%)1684(Top 98%)
Finish26.22 mi1.02 mi13168-623855-543855-5414175(Top 50%)5050(Top 41%)5050(Top 294%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

14753

Females

4445

F40-44

4445

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

14816

Females

4435

F40-44

4435

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

14753

Females

4445

F40-44

4445

15K→20K

9.3 - 12.4 mi

Top 49%
×5story building
+106ft-86ft

Overall

13894

Females

4031

F40-44

4031

20K→Half

12.4 - 13.1 mi

Top 49%
×2story building
+19ft-37ft

Overall

13830

Females

3969

F40-44

3969

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

13095

Females

3724

F40-44

3724

25K→30K

15.5 - 18.6 mi

Top 46%
×9story building
+181ft-148ft

Overall

12966

Females

3810

F40-44

3810

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

12104

Females

3508

F40-44

3508

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

12223

Females

3720

F40-44

3720

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11987

Females

3644

F40-44

3644

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

11061

Females

3263

F40-44

3263

23M→24M

23.0 - 24.0 mi

Top 44%
×6story building
+12ft-82ft

Overall

12378

Females

3984

F40-44

3984

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11866

Females

3853

F40-44

3853

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7013

Females

1684

F40-44

1684

25.2M→Finish

25.2 - 26.2 mi

Top 50%
×2story building
+22ft-21ft

Overall

14175

Females

5050

F40-44

5050

Passing Analysis

Category:
Athletes Passed
2720
Passed By
923
Net Change
+1797
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14965
5K → 10K334231+103#14965#14862
10K → 15K224168+56#14862#14806
15K → 20K35366+287#14806#14519
20K → Half6618+48#14519#14471
Half → 25K29947+252#14471#14219
25K → 30K41297+315#14219#13904
30K → 20M21231+181#13904#13723
20M → 21M16141+120#13723#13603
21M → 35K9316+77#13603#13526
35K → 23M20522+183#13526#13343
23M → 24M10339+64#13343#13279
24M → 40K10541+64#13279#13215
40K → 25.2M1112+109#13215#13106
25.2M → Finish42104-62#13106#13168
TOTALS2720923+1797
📊

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