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BOSTON MARATHON 2023

Samantha Esmer

Bib: 31942•F

OR

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
10:22/mi
32:14
↑ 97↓ 3451.5%
10K· 6.21 mi
10:09/mi
1:03:45
↑ 79↓ 1380.4%
15K· 9.32 mi
9:59/mi
1:34:45
↑ 67↓ 78
20K· 12.43 mi
9:59/mi
2:05:46
↑ 106↓ 860.1%
Half· 13.11 mi
9:57/mi
2:12:33
↑ 19↓ 370.5%
25K· 15.53 mi
10:12/mi
2:37:18
↑ 66↓ 880.2%
30K· 18.64 mi
10:42/mi
3:10:34
↑ 181↓ 1480.2%
20M
11:07/mi
3:25:41
↑ 64↓ 500.2%
21M
12:08/mi
3:37:49
↑ 106↓ 241.6%
35K· 21.75 mi
9:47/mi
3:45:08
↑ 17↓ 861.7%
23M
10:42/mi
3:58:32
↑ 23↓ 630.6%
24M
10:18/mi
4:08:50
↓ 821.3%
40K· 24.85 mi
10:54/mi
4:18:09
↓ 200.3%
25.2M
11:21/mi
4:22:04
↑ 13↓ 160.2%
Finish· 26.22 mi
10:04/mi
4:32:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:12:33
Pace10:07 /mi
2nd Half
Distance13.11 mi
Time2:19:46
Pace10:40 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:4332:1410:2232:14
10:22
-
10K
6.21 mi12:25:141:03:4510:1631:31
10:09
-0:13
15K
9.32 mi12:56:141:34:4510:1031:00
9:59
-0:10
20K
12.43 mi13:27:152:05:4610:0731:01
9:59
0:00
Half
13.11 mi13:34:022:12:3310:076:47
9:57
-0:02
25K
15.53 mi13:58:472:37:1810:0824:45
10:12
+0:15
30K
18.64 mi14:32:033:10:3410:1333:16
10:42
+0:30
20M
20.00 mi14:47:103:25:4110:1715:07
11:07
+0:25
21M
21.00 mi14:59:183:37:4910:2212:08
12:08
+1:01
35K
21.75 mi15:06:373:45:0810:217:19
9:47
-2:21
23M
23.00 mi15:20:013:58:3210:2213:24
10:42
+0:55
24M
24.00 mi15:30:194:08:5010:2210:18
10:18
-0:24
40K
24.85 mi15:39:384:18:0910:239:19
10:54
+0:36
25.2M
25.20 mi15:43:334:22:0410:243:55
11:21
+0:27
Finish
26.22 mi15:53:484:32:1910:2410:15
10:04
-1:17

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

9:47 /mi

Average Pace

10:24 /mi

Slowest Pace

12:08 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:16:07

28% of race

Time at Steady Pace

1:49:03

40% of race

Time at Slower Pace

1:27:09

32% of race

Average Pace: 10:23 /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 mi11:53:4332:1410:2232:14
10:22
#24421
10K
6.21 mi12:25:141:03:4510:1631:31
10:09
#24179
15K
9.32 mi12:56:141:34:4510:1031:00
9:59
#23933
20K
12.43 mi13:27:152:05:4610:0731:01
9:59
#23688
Half
13.11 mi13:34:022:12:3310:076:47
9:57
#23655
25K
15.53 mi13:58:472:37:1810:0824:45
10:12
#23465
30K
18.64 mi14:32:033:10:3410:1333:16
10:42
#23283
20M
20.00 mi14:47:103:25:4110:1715:07
11:07
#23255
21M
21.00 mi14:59:183:37:4910:2212:08
12:08
#23243
35K
21.75 mi15:06:373:45:0810:217:19
9:47
#23153
23M
23.00 mi15:20:013:58:3210:2213:24
10:42
#23076
24M
24.00 mi15:30:194:08:5010:2210:18
10:18
#23000
40K
24.85 mi15:39:384:18:0910:239:19
10:54
#22954
25.2M
25.20 mi15:43:334:22:0410:243:55
11:21
#22926
Finish
26.22 mi15:53:484:32:1910:2410:15
10:04
#22903
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi24421101101011023466(Top 88%)9591(Top 84%)9591(Top 528%)
10K6.21 mi3.10 mi24179+2429984+1269984+12624004(Top 90%)9887(Top 87%)9887(Top 544%)
15K9.32 mi3.11 mi23933+2469854+1309854+13023466(Top 88%)9591(Top 84%)9591(Top 528%)
20K12.43 mi3.11 mi23688+2459717+1379717+13722871(Top 86%)9291(Top 81%)9291(Top 511%)
Half13.11 mi0.68 mi23655+339698+199698+1923174(Top 87%)9453(Top 83%)9453(Top 520%)
25K15.53 mi2.42 mi23465+1909603+959603+9522637(Top 85%)9189(Top 80%)9189(Top 506%)
30K18.64 mi3.11 mi23283+1829528+759528+7522629(Top 85%)9260(Top 81%)9260(Top 510%)
20M20.00 mi1.36 mi23255+289530-29530-222914(Top 86%)9463(Top 83%)9463(Top 521%)
21M21.00 mi1.00 mi23243+129530953022953(Top 86%)9524(Top 83%)9524(Top 524%)
35K21.75 mi0.75 mi23153+909499+319499+3120730(Top 78%)8361(Top 73%)8361(Top 460%)
23M23.00 mi1.25 mi23076+779463+369463+3621778(Top 82%)8955(Top 78%)8955(Top 493%)
24M24.00 mi1.00 mi23000+769436+279436+2721579(Top 81%)8889(Top 78%)8889(Top 489%)
40K24.85 mi0.85 mi22954+469419+179419+1722149(Top 83%)9218(Top 81%)9218(Top 507%)
25.2M25.20 mi0.35 mi22926+289403+169403+1621294(Top 80%)8757(Top 77%)8757(Top 482%)
Finish26.22 mi1.02 mi22903+239399+49399+421940(Top 82%)9091(Top 80%)9091(Top 500%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21story building
+97ft-345ft

Overall

23466

Females

9591

F45-49

9591

5K→10K

3.1 - 6.2 mi

Top 90%
×5story building
+79ft-138ft

Overall

24004

Females

9887

F45-49

9887

10K→15K

6.2 - 9.3 mi

Top 88%
×3story building
+67ft-78ft

Overall

23466

Females

9591

F45-49

9591

15K→20K

9.3 - 12.4 mi

Top 86%
×5story building
+106ft-86ft

Overall

22871

Females

9291

F45-49

9291

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

23174

Females

9453

F45-49

9453

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

22637

Females

9189

F45-49

9189

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

22629

Females

9260

F45-49

9260

30K→20M

18.6 - 20.0 mi

Top 86%
×5story building
+64ft-50ft

Overall

22914

Females

9463

F45-49

9463

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

22953

Females

9524

F45-49

9524

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20730

Females

8361

F45-49

8361

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

21778

Females

8955

F45-49

8955

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

21579

Females

8889

F45-49

8889

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

22149

Females

9218

F45-49

9218

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21294

Females

8757

F45-49

8757

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

21940

Females

9091

F45-49

9091

Passing Analysis

Category:
Athletes Passed
1844
Passed By
326
Net Change
+1518
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24421
5K → 10K32785+242#24421#24179
10K → 15K28539+246#24179#23933
15K → 20K26318+245#23933#23688
20K → Half429+33#23688#23655
Half → 25K20616+190#23655#23465
25K → 30K20826+182#23465#23283
30K → 20M7244+28#23283#23255
20M → 21M4028+12#23255#23243
21M → 35K911+90#23243#23153
35K → 23M9619+77#23153#23076
23M → 24M826+76#23076#23000
24M → 40K6418+46#23000#22954
40K → 25.2M291+28#22954#22926
25.2M → Finish3916+23#22926#22903
TOTALS1844326+1518
📊

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