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BOSTON MARATHON 2025

Amanda Shadduck

Bib: 18394•F

MN

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
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
25:58
Rank: #19059
Start → 5K
25:58 | 8:21/mi
10K· 6.21 mi
51:59
Rank: #19040 (+19)
5K → 10K
26:01 | 8:22/mi
15K· 9.32 mi
1:18:11
Rank: #18960 (+80)
10K → 15K
26:12 | 8:26/mi
20K· 12.43 mi
1:44:39
Rank: #18783 (+177)
15K → 20K
26:28 | 8:31/mi
Half· 13.11 mi
1:50:23
Rank: #18772 (+11)
20K → Half
5:44 | 8:24/mi
25K· 15.53 mi
2:11:12
Rank: #18563 (+209)
Half → 25K
20:49 | 8:35/mi
30K· 18.64 mi
2:38:54
Rank: #18291 (+272)
25K → 30K
27:42 | 8:55/mi
20M
2:51:13
Rank: #18163 (+128)
30K → 20M
12:19 | 9:04/mi
21M
3:00:48
Rank: #18067 (+96)
20M → 21M
9:35 | 9:35/mi
35K· 21.75 mi
3:07:23
Rank: #18022 (+45)
21M → 35K
6:35 | 8:48/mi
23M
3:18:39
Rank: #17897 (+125)
35K → 23M
11:16 | 9:00/mi
24M
3:27:20
Rank: #17760 (+137)
23M → 24M
8:41 | 8:41/mi
40K· 24.85 mi
3:34:47
Rank: #17646 (+114)
24M → 40K
7:27 | 8:43/mi
25.2M
3:37:59
Rank: #17573 (+73)
40K → 25.2M
3:12 | 9:17/mi
Finish· 26.22 mi
3:46:11
Rank: #17421 (+152)
25.2M → Finish
8:12 | 8:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:23
Pace8:25 /mi
2nd Half
Distance13.11 mi
Time1:55:48
Pace8:50 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:18:0125:588:2125:58
8:21
-
10K
6.21 mi11:44:0251:598:2226:01
8:22
+0:01
15K
9.32 mi12:10:141:18:118:2326:12
8:26
+0:04
20K
12.43 mi12:36:421:44:398:2526:28
8:31
+0:05
Half
13.11 mi12:42:261:50:238:255:44
8:24
-0:07
25K
15.53 mi13:03:152:11:128:2720:49
8:35
+0:11
30K
18.64 mi13:30:572:38:548:3127:42
8:55
+0:20
20M
20.00 mi13:43:162:51:138:3412:19
9:04
+0:09
21M
21.00 mi13:52:513:00:488:379:35
9:35
+0:31
35K
21.75 mi13:59:263:07:238:376:35
8:48
-0:47
23M
23.00 mi14:10:423:18:398:3811:16
9:00
+0:12
24M
24.00 mi14:19:233:27:208:388:41
8:41
-0:19
40K
24.85 mi14:26:503:34:478:387:27
8:43
+0:02
25.2M
25.20 mi14:30:023:37:598:393:12
9:17
+0:34
Finish
26.22 mi14:38:143:46:118:388:12
8:03
-1:14

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

8:03 /mi

Average Pace

8:38 /mi

Slowest Pace

9:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:07

72% of race

Time at Steady Pace

54:29

24% of race

Time at Slower Pace

9:35

4% of race

Average Pace: 8:38 /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 mi11:18:0125:588:2125:58
8:21
#19059
10K
6.21 mi11:44:0251:598:2226:01
8:22
#19040
15K
9.32 mi12:10:141:18:118:2326:12
8:26
#18960
20K
12.43 mi12:36:421:44:398:2526:28
8:31
#18783
Half
13.11 mi12:42:261:50:238:255:44
8:24
#18772
25K
15.53 mi13:03:152:11:128:2720:49
8:35
#18563
30K
18.64 mi13:30:572:38:548:3127:42
8:55
#18291
20M
20.00 mi13:43:162:51:138:3412:19
9:04
#18163
21M
21.00 mi13:52:513:00:488:379:35
9:35
#18067
35K
21.75 mi13:59:263:07:238:376:35
8:48
#18022
23M
23.00 mi14:10:423:18:398:3811:16
9:00
#17897
24M
24.00 mi14:19:233:27:208:388:41
8:41
#17760
40K
24.85 mi14:26:503:34:478:387:27
8:43
#17646
25.2M
25.20 mi14:30:023:37:598:393:12
9:17
#17573
Finish
26.22 mi14:38:143:46:118:388:12
8:03
#17421
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi190596941694118918(Top 67%)6850(Top 56%)6850(Top 125%)
10K6.21 mi3.10 mi19040+196928+136928+1319040(Top 67%)6906(Top 56%)6906(Top 126%)
15K9.32 mi3.11 mi18960+806884+446884+4418918(Top 67%)6850(Top 56%)6850(Top 125%)
20K12.43 mi3.11 mi18783+1776780+1046780+10418373(Top 65%)6547(Top 54%)6547(Top 120%)
Half13.11 mi0.68 mi18772+116774+66774+618637(Top 66%)6696(Top 55%)6696(Top 122%)
25K15.53 mi2.42 mi18563+2096676+986676+9817730(Top 62%)6266(Top 51%)6266(Top 115%)
30K18.64 mi3.11 mi18291+2726557+1196557+11917248(Top 61%)6160(Top 50%)6160(Top 113%)
20M20.00 mi1.36 mi18163+1286511+466511+4617155(Top 60%)6226(Top 51%)6226(Top 114%)
21M21.00 mi1.00 mi18067+966470+416470+4116483(Top 58%)5971(Top 49%)5971(Top 109%)
35K21.75 mi0.75 mi18022+456459+116459+1117269(Top 61%)6504(Top 53%)6504(Top 119%)
23M23.00 mi1.25 mi17897+1256438+216438+2116269(Top 57%)6043(Top 49%)6043(Top 110%)
24M24.00 mi1.00 mi17760+1376401+376401+3715665(Top 55%)5731(Top 47%)5731(Top 105%)
40K24.85 mi0.85 mi17646+1146359+426359+4214734(Top 52%)5388(Top 44%)5388(Top 99%)
25.2M25.20 mi0.35 mi17573+736333+266333+2613459(Top 47%)4768(Top 39%)4768(Top 87%)
Finish26.22 mi1.02 mi17421+1526268+656268+6513247(Top 47%)4587(Top 38%)4587(Top 84%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21stories
+97ft-345ft

Overall

18918

Females

6850

F18-39

6850

5K→10K

3.1 - 6.2 mi

Top 67%
×5stories
+79ft-138ft

Overall

19040

Females

6906

F18-39

6906

10K→15K

6.2 - 9.3 mi

Top 67%
×3stories
+67ft-78ft

Overall

18918

Females

6850

F18-39

6850

15K→20K

9.3 - 12.4 mi

Top 65%
×5stories
+106ft-86ft

Overall

18373

Females

6547

F18-39

6547

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

18637

Females

6696

F18-39

6696

Half→25K

13.1 - 15.5 mi

Top 62%
×4stories
+66ft-88ft

Overall

17730

Females

6266

F18-39

6266

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

17248

Females

6160

F18-39

6160

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

17155

Females

6226

F18-39

6226

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

16483

Females

5971

F18-39

5971

21M→35K

21.0 - 21.8 mi

Top 61%
×7stories
+17ft-86ft

Overall

17269

Females

6504

F18-39

6504

35K→23M

21.8 - 23.0 mi

Top 57%
×5stories
+23ft-63ft

Overall

16269

Females

6043

F18-39

6043

23M→24M

23.0 - 24.0 mi

Top 55%
×6stories
+12ft-82ft

Overall

15665

Females

5731

F18-39

5731

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

14734

Females

5388

F18-39

5388

40K→25.2M

24.9 - 25.2 mi

Top 47%
×1story
+13ft-16ft

Overall

13459

Females

4768

F18-39

4768

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

13247

Females

4587

F18-39

4587

Passing Analysis

Category:
Athletes Passed
2550
Passed By
912
Net Change
+1638
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19059
5K → 10K270251+19#19059#19040
10K → 15K234154+80#19040#18960
15K → 20K278101+177#18960#18783
20K → Half3928+11#18783#18772
Half → 25K26354+209#18772#18563
25K → 30K374102+272#18563#18291
30K → 20M18658+128#18291#18163
20M → 21M14347+96#18163#18067
21M → 35K7429+45#18067#18022
35K → 23M17146+125#18022#17897
23M → 24M15417+137#17897#17760
24M → 40K13016+114#17760#17646
40K → 25.2M752+73#17646#17573
25.2M → Finish1597+152#17573#17421
TOTALS2550912+1638
📊

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