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BOSTON MARATHON 2025

Margaret Shilling

Bib: 26605•F

MA

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

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
10:46/mi
33:26
↑ 97↓ 3451.5%
10K· 6.21 mi
10:42/mi
1:06:40
↑ 79↓ 1380.4%
15K· 9.32 mi
10:38/mi
1:39:43
↑ 67↓ 78
20K· 12.43 mi
10:52/mi
2:13:29
↑ 106↓ 860.1%
Half· 13.11 mi
10:49/mi
2:20:52
↑ 19↓ 370.5%
25K· 15.53 mi
11:13/mi
2:48:03
↑ 66↓ 880.2%
30K· 18.64 mi
12:13/mi
3:26:01
↑ 181↓ 1480.2%
20M
11:54/mi
3:42:11
↑ 64↓ 500.2%
21M
12:14/mi
3:54:25
↑ 106↓ 241.6%
35K· 21.75 mi
11:24/mi
4:02:57
↑ 17↓ 861.7%
23M
11:27/mi
4:17:17
↑ 23↓ 630.6%
24M
11:11/mi
4:28:28
↓ 821.3%
40K· 24.85 mi
11:22/mi
4:38:11
↓ 200.3%
25.2M
12:05/mi
4:42:21
↑ 13↓ 160.2%
Finish· 26.22 mi
10:16/mi
4:52:49
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:20:52
Pace10:45 /mi
2nd Half
Distance13.11 mi
Time2:31:57
Pace11:35 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:59:1433:2610:4633:26
10:46
-
10K
6.21 mi12:32:281:06:4010:4433:14
10:42
-0:04
15K
9.32 mi13:05:311:39:4310:4233:03
10:38
-0:04
20K
12.43 mi13:39:172:13:2910:4433:46
10:52
+0:14
Half
13.11 mi13:46:402:20:5210:457:23
10:49
-0:03
25K
15.53 mi14:13:512:48:0310:4927:11
11:13
+0:24
30K
18.64 mi14:51:493:26:0111:0337:58
12:13
+1:00
20M
20.00 mi15:07:593:42:1111:0716:10
11:54
-0:19
21M
21.00 mi15:20:133:54:2511:1012:14
12:14
+0:20
35K
21.75 mi15:28:454:02:5711:108:32
11:24
-0:50
23M
23.00 mi15:43:054:17:1711:1114:20
11:27
+0:03
24M
24.00 mi15:54:164:28:2811:1111:11
11:11
-0:16
40K
24.85 mi16:03:594:38:1111:129:43
11:22
+0:11
25.2M
25.20 mi16:08:094:42:2111:124:10
12:05
+0:43
Finish
26.22 mi16:18:374:52:4911:1110:28
10:16
-1:49

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

10:16 /mi

Average Pace

11:11 /mi

Slowest Pace

12:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:09:42

65% of race

Time at Steady Pace

52:55

18% of race

Time at Slower Pace

50:12

17% of race

Average Pace: 11:10 /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 mi11:59:1433:2610:4633:26
10:46
#27223
10K
6.21 mi12:32:281:06:4010:4433:14
10:42
#26890
15K
9.32 mi13:05:311:39:4310:4233:03
10:38
#26629
20K
12.43 mi13:39:172:13:2910:4433:46
10:52
#26397
Half
13.11 mi13:46:402:20:5210:457:23
10:49
#26395
25K
15.53 mi14:13:512:48:0310:4927:11
11:13
#26221
30K
18.64 mi14:51:493:26:0111:0337:58
12:13
#26155
20M
20.00 mi15:07:593:42:1111:0716:10
11:54
#26086
21M
21.00 mi15:20:133:54:2511:1012:14
12:14
#25982
35K
21.75 mi15:28:454:02:5711:108:32
11:24
#25949
23M
23.00 mi15:43:054:17:1711:1114:20
11:27
#25874
24M
24.00 mi15:54:164:28:2811:1111:11
11:11
#25827
40K
24.85 mi16:03:594:38:1111:129:43
11:22
#25775
25.2M
25.20 mi16:08:094:42:2111:124:10
12:05
#25756
Finish
26.22 mi16:18:374:52:4911:1110:28
10:16
#25714
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi27223114601146026157(Top 92%)10873(Top 89%)10873(Top 199%)
10K6.21 mi3.10 mi26890+33311275+18511275+18526589(Top 94%)11115(Top 91%)11115(Top 203%)
15K9.32 mi3.11 mi26629+26111129+14611129+14626157(Top 92%)10873(Top 89%)10873(Top 199%)
20K12.43 mi3.11 mi26397+23211008+12111008+12125802(Top 91%)10704(Top 88%)10704(Top 196%)
Half13.11 mi0.68 mi26395+211003+511003+526275(Top 93%)10981(Top 90%)10981(Top 201%)
25K15.53 mi2.42 mi26221+17410905+9810905+9825488(Top 90%)10562(Top 86%)10562(Top 193%)
30K18.64 mi3.11 mi26155+6610908-310908-325842(Top 91%)10860(Top 89%)10860(Top 199%)
20M20.00 mi1.36 mi26086+6910882+2610882+2625107(Top 88%)10538(Top 86%)10538(Top 193%)
21M21.00 mi1.00 mi25982+10410838+4410838+4423978(Top 84%)10026(Top 82%)10026(Top 183%)
35K21.75 mi0.75 mi25949+3310821+1710821+1724929(Top 88%)10551(Top 86%)10551(Top 193%)
23M23.00 mi1.25 mi25874+7510794+2710794+2724146(Top 85%)10174(Top 83%)10174(Top 186%)
24M24.00 mi1.00 mi25827+4710784+1010784+1024344(Top 86%)10297(Top 84%)10297(Top 188%)
40K24.85 mi0.85 mi25775+5210773+1110773+1123865(Top 84%)10109(Top 83%)10109(Top 185%)
25.2M25.20 mi0.35 mi25756+1910768+510768+523353(Top 82%)9850(Top 81%)9850(Top 180%)
Finish26.22 mi1.02 mi25714+4210753+1510753+1523702(Top 83%)10029(Top 82%)10029(Top 183%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 92%
×21story building
+97ft-345ft

Overall

26157

Females

10873

F18-39

10873

5K→10K

3.1 - 6.2 mi

Top 94%
×5story building
+79ft-138ft

Overall

26589

Females

11115

F18-39

11115

10K→15K

6.2 - 9.3 mi

Top 92%
×3story building
+67ft-78ft

Overall

26157

Females

10873

F18-39

10873

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

25802

Females

10704

F18-39

10704

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

26275

Females

10981

F18-39

10981

Half→25K

13.1 - 15.5 mi

Top 90%
×4story building
+66ft-88ft

Overall

25488

Females

10562

F18-39

10562

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

25842

Females

10860

F18-39

10860

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

25107

Females

10538

F18-39

10538

20M→21M

20.0 - 21.0 mi

Top 84%
×8story building
+106ft-24ft

Overall

23978

Females

10026

F18-39

10026

21M→35K

21.0 - 21.8 mi

Top 88%
×7story building
+17ft-86ft

Overall

24929

Females

10551

F18-39

10551

35K→23M

21.8 - 23.0 mi

Top 85%
×5story building
+23ft-63ft

Overall

24146

Females

10174

F18-39

10174

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

24344

Females

10297

F18-39

10297

24M→40K

24.0 - 24.9 mi

Top 84%
×1story
+6ft-20ft

Overall

23865

Females

10109

F18-39

10109

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

23353

Females

9850

F18-39

9850

25.2M→Finish

25.2 - 26.2 mi

Top 83%
×2story building
+22ft-21ft

Overall

23702

Females

10029

F18-39

10029

Passing Analysis

Category:
Athletes Passed
1758
Passed By
249
Net Change
+1509
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#27223
5K → 10K36633+333#27223#26890
10K → 15K27312+261#26890#26629
15K → 20K24917+232#26629#26397
20K → Half2321+2#26397#26395
Half → 25K19622+174#26395#26221
25K → 30K13872+66#26221#26155
30K → 20M8415+69#26155#26086
20M → 21M1084+104#26086#25982
21M → 35K429+33#25982#25949
35K → 23M8914+75#25949#25874
23M → 24M5710+47#25874#25827
24M → 40K619+52#25827#25775
40K → 25.2M223+19#25775#25756
25.2M → Finish508+42#25756#25714
TOTALS1758249+1509
📊

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