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BOSTON MARATHON 2023

Samantha Simpson

Bib: 17211•F

AK

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:14
Rank: #20824
Start → 5K
28:14 | 9:05/mi
10K· 6.21 mi
56:56
Rank: #21291 (-467)
5K → 10K
28:42 | 9:14/mi
15K· 9.32 mi
1:25:07
Rank: #21149 (+142)
10K → 15K
28:11 | 9:04/mi
20K· 12.43 mi
1:54:56
Rank: #21349 (-200)
15K → 20K
29:49 | 9:36/mi
Half· 13.11 mi
2:01:13
Rank: #21327 (+22)
20K → Half
6:17 | 9:13/mi
25K· 15.53 mi
2:23:42
Rank: #21125 (+202)
Half → 25K
22:29 | 9:16/mi
30K· 18.64 mi
2:53:23
Rank: #20827 (+298)
25K → 30K
29:41 | 9:33/mi
20M
3:06:15
Rank: #20646 (+181)
30K → 20M
12:52 | 9:28/mi
21M
3:16:08
Rank: #20475 (+171)
20M → 21M
9:53 | 9:53/mi
35K· 21.75 mi
3:23:20
Rank: #20451 (+24)
21M → 35K
7:12 | 9:37/mi
23M
3:35:16
Rank: #20327 (+124)
35K → 23M
11:56 | 9:32/mi
24M
3:44:34
Rank: #20264 (+63)
23M → 24M
9:18 | 9:18/mi
40K· 24.85 mi
3:53:41
Rank: #20304 (-40)
24M → 40K
9:07 | 10:40/mi
25.2M
3:57:03
Rank: #20245 (+59)
40K → 25.2M
3:22 | 9:46/mi
Finish· 26.22 mi
4:06:00
Rank: #20157 (+88)
25.2M → Finish
8:57 | 8:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:13
Pace9:15 /mi
2nd Half
Distance13.11 mi
Time2:04:47
Pace9:31 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:22:4628:149:0528:14
9:05
-
10K
6.21 mi11:51:2856:569:1028:42
9:14
+0:09
15K
9.32 mi12:19:391:25:079:0828:11
9:04
-0:10
20K
12.43 mi12:49:281:54:569:1529:49
9:36
+0:32
Half
13.11 mi12:55:452:01:139:156:17
9:13
-0:23
25K
15.53 mi13:18:142:23:429:1522:29
9:16
+0:03
30K
18.64 mi13:47:552:53:239:1829:41
9:33
+0:17
20M
20.00 mi14:00:473:06:159:1912:52
9:28
-0:05
21M
21.00 mi14:10:403:16:089:209:53
9:53
+0:25
35K
21.75 mi14:17:523:23:209:217:12
9:37
-0:16
23M
23.00 mi14:29:483:35:169:2211:56
9:32
-0:05
24M
24.00 mi14:39:063:44:349:219:18
9:18
-0:14
40K
24.85 mi14:48:133:53:419:249:07
10:40
+1:22
25.2M
25.20 mi14:51:353:57:039:243:22
9:46
-0:54
Finish
26.22 mi15:00:324:06:009:238:57
8:47
-0:59

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

8:47 /mi

Average Pace

9:23 /mi

Slowest Pace

10:40 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:21

41% of race

Time at Steady Pace

2:03:17

50% of race

Time at Slower Pace

22:22

9% of race

Average Pace: 9:23 /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 mi11:22:4628:149:0528:14
9:05
#20824
10K
6.21 mi11:51:2856:569:1028:42
9:14
#21291
15K
9.32 mi12:19:391:25:079:0828:11
9:04
#21149
20K
12.43 mi12:49:281:54:569:1529:49
9:36
#21349
Half
13.11 mi12:55:452:01:139:156:17
9:13
#21327
25K
15.53 mi13:18:142:23:429:1522:29
9:16
#21125
30K
18.64 mi13:47:552:53:239:1829:41
9:33
#20827
20M
20.00 mi14:00:473:06:159:1912:52
9:28
#20646
21M
21.00 mi14:10:403:16:089:209:53
9:53
#20475
35K
21.75 mi14:17:523:23:209:217:12
9:37
#20451
23M
23.00 mi14:29:483:35:169:2211:56
9:32
#20327
24M
24.00 mi14:39:063:44:349:219:18
9:18
#20264
40K
24.85 mi14:48:133:53:419:249:07
10:40
#20304
25.2M
25.20 mi14:51:353:57:039:243:22
9:46
#20245
Finish
26.22 mi15:00:324:06:009:238:57
8:47
#20157
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi208248282828220830(Top 78%)8139(Top 71%)8139(Top 167%)
10K6.21 mi3.10 mi21291-4678473-1918473-19121735(Top 82%)8679(Top 76%)8679(Top 178%)
15K9.32 mi3.11 mi21149+1428358+1158358+11520830(Top 78%)8139(Top 71%)8139(Top 167%)
20K12.43 mi3.11 mi21349-2008461-1038461-10321846(Top 82%)8705(Top 76%)8705(Top 178%)
Half13.11 mi0.68 mi21327+228447+148447+1421211(Top 80%)8359(Top 73%)8359(Top 171%)
25K15.53 mi2.42 mi21125+2028341+1068341+10620117(Top 76%)7763(Top 68%)7763(Top 159%)
30K18.64 mi3.11 mi20827+2988176+1658176+16519646(Top 74%)7561(Top 66%)7561(Top 155%)
20M20.00 mi1.36 mi20646+1818102+748102+7418771(Top 71%)7175(Top 63%)7175(Top 147%)
21M21.00 mi1.00 mi20475+1718014+888014+8817621(Top 66%)6544(Top 57%)6544(Top 134%)
35K21.75 mi0.75 mi20451+248014801420236(Top 76%)8074(Top 71%)8074(Top 165%)
23M23.00 mi1.25 mi20327+1247953+617953+6118466(Top 69%)7118(Top 62%)7118(Top 146%)
24M24.00 mi1.00 mi20264+637927+267927+2618483(Top 69%)7160(Top 63%)7160(Top 147%)
40K24.85 mi0.85 mi20304-407959-327959-3221627(Top 81%)8950(Top 78%)8950(Top 183%)
25.2M25.20 mi0.35 mi20245+597932+277932+2716462(Top 62%)6156(Top 54%)6156(Top 126%)
Finish26.22 mi1.02 mi20157+887895+377895+3716990(Top 64%)6377(Top 56%)6377(Top 131%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

20830

Females

8139

F18-39

8139

5K→10K

3.1 - 6.2 mi

Top 82%
×5stories
+79ft-138ft

Overall

21735

Females

8679

F18-39

8679

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

20830

Females

8139

F18-39

8139

15K→20K

9.3 - 12.4 mi

Top 82%
×5stories
+106ft-86ft

Overall

21846

Females

8705

F18-39

8705

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

21211

Females

8359

F18-39

8359

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

20117

Females

7763

F18-39

7763

25K→30K

15.5 - 18.6 mi

Top 74%
×9stories
+181ft-148ft

Overall

19646

Females

7561

F18-39

7561

30K→20M

18.6 - 20.0 mi

Top 71%
×5stories
+64ft-50ft

Overall

18771

Females

7175

F18-39

7175

20M→21M

20.0 - 21.0 mi

Top 66%
×8stories
+106ft-24ft

Overall

17621

Females

6544

F18-39

6544

21M→35K

21.0 - 21.8 mi

Top 76%
×7stories
+17ft-86ft

Overall

20236

Females

8074

F18-39

8074

35K→23M

21.8 - 23.0 mi

Top 69%
×5stories
+23ft-63ft

Overall

18466

Females

7118

F18-39

7118

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

18483

Females

7160

F18-39

7160

24M→40K

24.0 - 24.9 mi

Top 81%
×1story
+6ft-20ft

Overall

21627

Females

8950

F18-39

8950

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16462

Females

6156

F18-39

6156

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2stories
+22ft-21ft

Overall

16990

Females

6377

F18-39

6377

Passing Analysis

Category:
Athletes Passed
1832
Passed By
1165
Net Change
+667
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20824
5K → 10K116583-467#20824#21291
10K → 15K23896+142#21291#21149
15K → 20K77277-200#21149#21349
20K → Half3715+22#21349#21327
Half → 25K22422+202#21327#21125
25K → 30K32628+298#21125#20827
30K → 20M1865+181#20827#20646
20M → 21M1776+171#20646#20475
21M → 35K5430+24#20475#20451
35K → 23M14117+124#20451#20327
23M → 24M7714+63#20327#20264
24M → 40K2464-40#20264#20304
40K → 25.2M601+59#20304#20245
25.2M → Finish957+88#20245#20157
TOTALS18321165+667
📊

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