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BOSTON MARATHON 2023

Elizabeth Samuelson

Bib: 21829•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Top 43%
Division (F50-54)
#0 / 1207
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:28
Rank: #17694
Start → 5K
26:28 | 8:31/mi
10K· 6.21 mi
52:34
Rank: #17638 (+56)
5K → 10K
26:06 | 8:24/mi
15K· 9.32 mi
1:18:36
Rank: #17417 (+221)
10K → 15K
26:02 | 8:23/mi
20K· 12.43 mi
1:45:07
Rank: #17309 (+108)
15K → 20K
26:31 | 8:32/mi
Half· 13.11 mi
1:50:54
Rank: #17325 (-16)
20K → Half
5:47 | 8:29/mi
25K· 15.53 mi
2:11:30
Rank: #17121 (+204)
Half → 25K
20:36 | 8:30/mi
30K· 18.64 mi
2:39:02
Rank: #16957 (+164)
25K → 30K
27:32 | 8:52/mi
20M
2:51:05
Rank: #16872 (+85)
30K → 20M
12:03 | 8:52/mi
21M
3:00:35
Rank: #16792 (+80)
20M → 21M
9:30 | 9:30/mi
35K· 21.75 mi
3:07:07
Rank: #16774 (+18)
21M → 35K
6:32 | 8:44/mi
23M
3:18:24
Rank: #16741 (+33)
35K → 23M
11:17 | 9:01/mi
24M
3:27:21
Rank: #16744 (-3)
23M → 24M
8:57 | 8:57/mi
40K· 24.85 mi
3:35:20
Rank: #16788 (-44)
24M → 40K
7:59 | 9:20/mi
25.2M
3:38:42
Rank: #16769 (+19)
40K → 25.2M
3:22 | 9:46/mi
Finish· 26.22 mi
3:47:38
Rank: #16782 (-13)
25.2M → Finish
8:56 | 8:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:50:54
Pace8:28 /mi
2nd Half
Distance13.11 mi
Time1:56:44
Pace8:54 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:19:1926:288:3126:28
8:31
-
10K
6.21 mi11:45:2552:348:2826:06
8:24
-0:07
15K
9.32 mi12:11:271:18:368:2626:02
8:23
-0:01
20K
12.43 mi12:37:581:45:078:2826:31
8:32
+0:09
Half
13.11 mi12:43:451:50:548:285:47
8:29
-0:03
25K
15.53 mi13:04:212:11:308:2820:36
8:30
+0:01
30K
18.64 mi13:31:532:39:028:3227:32
8:52
+0:22
20M
20.00 mi13:43:562:51:058:3312:03
8:52
0:00
21M
21.00 mi13:53:263:00:358:369:30
9:30
+0:38
35K
21.75 mi13:59:583:07:078:366:32
8:44
-0:46
23M
23.00 mi14:11:153:18:248:3811:17
9:01
+0:17
24M
24.00 mi14:20:123:27:218:388:57
8:57
-0:04
40K
24.85 mi14:28:113:35:208:407:59
9:20
+0:23
25.2M
25.20 mi14:31:333:38:428:413:22
9:46
+0:26
Finish
26.22 mi14:40:293:47:388:418:56
8:46
-1:00

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

8:23 /mi

Average Pace

8:41 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:26:47

91% of race

Time at Steady Pace

20:51

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:41 /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 mi11:19:1926:288:3126:28
8:31
#17694
10K
6.21 mi11:45:2552:348:2826:06
8:24
#17638
15K
9.32 mi12:11:271:18:368:2626:02
8:23
#17417
20K
12.43 mi12:37:581:45:078:2826:31
8:32
#17309
Half
13.11 mi12:43:451:50:548:285:47
8:29
#17325
25K
15.53 mi13:04:212:11:308:2820:36
8:30
#17121
30K
18.64 mi13:31:532:39:028:3227:32
8:52
#16957
20M
20.00 mi13:43:562:51:058:3312:03
8:52
#16872
21M
21.00 mi13:53:263:00:358:369:30
9:30
#16792
35K
21.75 mi13:59:583:07:078:366:32
8:44
#16774
23M
23.00 mi14:11:153:18:248:3811:17
9:01
#16741
24M
24.00 mi14:20:123:27:218:388:57
8:57
#16744
40K
24.85 mi14:28:113:35:208:407:59
9:20
#16788
25.2M
25.20 mi14:31:333:38:428:413:22
9:46
#16769
Finish
26.22 mi14:40:293:47:388:418:56
8:46
#16782
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi176946370637017037(Top 64%)5941(Top 52%)5941(Top 492%)
10K6.21 mi3.10 mi17638+566307+636307+6317595(Top 66%)6239(Top 55%)6239(Top 517%)
15K9.32 mi3.11 mi17417+2216167+1406167+14017037(Top 64%)5941(Top 52%)5941(Top 492%)
20K12.43 mi3.11 mi17309+1086113+546113+5417088(Top 64%)5977(Top 52%)5977(Top 495%)
Half13.11 mi0.68 mi17325-166117-46117-417609(Top 66%)6246(Top 55%)6246(Top 517%)
25K15.53 mi2.42 mi17121+2046016+1016016+10116192(Top 61%)5558(Top 49%)5558(Top 460%)
30K18.64 mi3.11 mi16957+1645936+805936+8016447(Top 62%)5753(Top 50%)5753(Top 477%)
20M20.00 mi1.36 mi16872+855898+385898+3815846(Top 60%)5482(Top 48%)5482(Top 454%)
21M21.00 mi1.00 mi16792+805864+345864+3415980(Top 60%)5624(Top 49%)5624(Top 466%)
35K21.75 mi0.75 mi16774+185865-15865-116616(Top 62%)6056(Top 53%)6056(Top 502%)
23M23.00 mi1.25 mi16741+335870-55870-516141(Top 61%)5821(Top 51%)5821(Top 482%)
24M24.00 mi1.00 mi16744-35890-205890-2017009(Top 64%)6359(Top 56%)6359(Top 527%)
40K24.85 mi0.85 mi16788-445934-445934-4417697(Top 66%)6783(Top 59%)6783(Top 562%)
25.2M25.20 mi0.35 mi16769+195934593416418(Top 62%)6112(Top 54%)6112(Top 506%)
Finish26.22 mi1.02 mi16782-135951-175951-1716866(Top 63%)6298(Top 55%)6298(Top 522%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21stories
+97ft-345ft

Overall

17037

Females

5941

F50-54

5941

5K→10K

3.1 - 6.2 mi

Top 66%
×5stories
+79ft-138ft

Overall

17595

Females

6239

F50-54

6239

10K→15K

6.2 - 9.3 mi

Top 64%
×3stories
+67ft-78ft

Overall

17037

Females

5941

F50-54

5941

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

17088

Females

5977

F50-54

5977

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

17609

Females

6246

F50-54

6246

Half→25K

13.1 - 15.5 mi

Top 61%
×4stories
+66ft-88ft

Overall

16192

Females

5558

F50-54

5558

25K→30K

15.5 - 18.6 mi

Top 62%
×9stories
+181ft-148ft

Overall

16447

Females

5753

F50-54

5753

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

15846

Females

5482

F50-54

5482

20M→21M

20.0 - 21.0 mi

Top 60%
×8stories
+106ft-24ft

Overall

15980

Females

5624

F50-54

5624

21M→35K

21.0 - 21.8 mi

Top 62%
×7stories
+17ft-86ft

Overall

16616

Females

6056

F50-54

6056

35K→23M

21.8 - 23.0 mi

Top 61%
×5stories
+23ft-63ft

Overall

16141

Females

5821

F50-54

5821

23M→24M

23.0 - 24.0 mi

Top 64%
×6stories
+12ft-82ft

Overall

17009

Females

6359

F50-54

6359

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

17697

Females

6783

F50-54

6783

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16418

Females

6112

F50-54

6112

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

16866

Females

6298

F50-54

6298

Passing Analysis

Category:
Athletes Passed
1988
Passed By
1076
Net Change
+912
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17694
5K → 10K334278+56#17694#17638
10K → 15K327106+221#17638#17417
15K → 20K217109+108#17417#17309
20K → Half2339-16#17309#17325
Half → 25K23632+204#17325#17121
25K → 30K25490+164#17121#16957
30K → 20M12136+85#16957#16872
20M → 21M11535+80#16872#16792
21M → 35K5537+18#16792#16774
35K → 23M10067+33#16774#16741
23M → 24M6669-3#16741#16744
24M → 40K4286-44#16744#16788
40K → 25.2M3415+19#16788#16769
25.2M → Finish6477-13#16769#16782
TOTALS19881076+912
📊

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