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BOSTON MARATHON 2023

Miriam Epstejn

Bib: 15332•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 30%
Gender (Female)
#0 / 11423
Top 11%
Division (F18-39)
#0 / 4884
Top 21%
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
7:22/mi
22:54
↑ 97↓ 3451.5%
10K· 6.21 mi
7:29/mi
46:09
↑ 79↓ 1380.4%
15K· 9.32 mi
7:32/mi
1:09:32
↑ 67↓ 78
20K· 12.43 mi
7:33/mi
1:32:58
↑ 106↓ 860.1%
Half· 13.11 mi
7:26/mi
1:38:02
↑ 19↓ 370.5%
25K· 15.53 mi
7:29/mi
1:56:10
↑ 66↓ 880.2%
30K· 18.64 mi
7:37/mi
2:19:51
↑ 181↓ 1480.2%
20M
7:36/mi
2:30:11
↑ 64↓ 500.2%
21M
7:52/mi
2:38:03
↑ 106↓ 241.6%
35K· 21.75 mi
7:18/mi
2:43:31
↑ 17↓ 861.7%
23M
7:27/mi
2:52:51
↑ 23↓ 630.6%
24M
7:10/mi
3:00:01
↓ 821.3%
40K· 24.85 mi
7:16/mi
3:06:14
↓ 200.3%
25.2M
7:50/mi
3:08:56
↑ 13↓ 160.2%
Finish· 26.22 mi
6:57/mi
3:16:01
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:38:02
Pace7:29 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:37:59
Pace7:28 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:5222:547:2222:54
7:22
-
10K
6.21 mi11:16:0746:097:2623:15
7:29
+0:07
15K
9.32 mi11:39:301:09:327:2823:23
7:32
+0:03
20K
12.43 mi12:02:561:32:587:2923:26
7:33
+0:01
Half
13.11 mi12:08:001:38:027:295:04
7:26
-0:07
25K
15.53 mi12:26:081:56:107:2918:08
7:29
+0:03
30K
18.64 mi12:49:492:19:517:3023:41
7:37
+0:08
20M
20.00 mi13:00:092:30:117:3110:20
7:36
-0:01
21M
21.00 mi13:08:012:38:037:327:52
7:52
+0:16
35K
21.75 mi13:13:292:43:317:315:28
7:18
-0:34
23M
23.00 mi13:22:492:52:517:319:20
7:27
+0:09
24M
24.00 mi13:29:593:00:017:307:10
7:10
-0:17
40K
24.85 mi13:36:123:06:147:306:13
7:16
+0:06
25.2M
25.20 mi13:38:543:08:567:302:42
7:50
+0:34
Finish
26.22 mi13:45:593:16:017:297:05
6:57
-0:53

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

6:57 /mi

Average Pace

7:29 /mi

Slowest Pace

7:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:05:27

95% of race

Time at Steady Pace

10:34

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:29 /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 mi10:52:5222:547:2222:54
7:22
#8610
10K
6.21 mi11:16:0746:097:2623:15
7:29
#9397
15K
9.32 mi11:39:301:09:327:2823:23
7:32
#9688
20K
12.43 mi12:02:561:32:587:2923:26
7:33
#9658
Half
13.11 mi12:08:001:38:027:295:04
7:26
#9645
25K
15.53 mi12:26:081:56:107:2918:08
7:29
#9463
30K
18.64 mi12:49:492:19:517:3023:41
7:37
#9178
20M
20.00 mi13:00:092:30:117:3110:20
7:36
#9023
21M
21.00 mi13:08:012:38:037:327:52
7:52
#8860
35K
21.75 mi13:13:292:43:317:315:28
7:18
#8785
23M
23.00 mi13:22:492:52:517:319:20
7:27
#8577
24M
24.00 mi13:29:593:00:017:307:10
7:10
#8406
40K
24.85 mi13:36:123:06:147:306:13
7:16
#8262
25.2M
25.20 mi13:38:543:08:567:302:42
7:50
#8197
Finish
26.22 mi13:45:593:16:017:297:05
6:57
#8028
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi86101240124010391(Top 39%)2018(Top 18%)2018(Top 41%)
10K6.21 mi3.10 mi9397-7871570-3301570-33010323(Top 39%)1966(Top 17%)1966(Top 40%)
15K9.32 mi3.11 mi9688-2911705-1351705-13510391(Top 39%)2018(Top 18%)2018(Top 41%)
20K12.43 mi3.11 mi9658+301685+201685+209655(Top 36%)1752(Top 15%)1752(Top 36%)
Half13.11 mi0.68 mi9645+131681+41681+49639(Top 36%)1710(Top 15%)1710(Top 35%)
25K15.53 mi2.42 mi9463+1821631+501631+508631(Top 32%)1395(Top 12%)1395(Top 29%)
30K18.64 mi3.11 mi9178+2851556+751556+758125(Top 31%)1356(Top 12%)1356(Top 28%)
20M20.00 mi1.36 mi9023+1551514+421514+427544(Top 28%)1232(Top 11%)1232(Top 25%)
21M21.00 mi1.00 mi8860+1631463+511463+516575(Top 25%)972(Top 9%)972(Top 20%)
35K21.75 mi0.75 mi8785+751448+151448+157223(Top 27%)1185(Top 10%)1185(Top 24%)
23M23.00 mi1.25 mi8577+2081398+501398+506198(Top 23%)884(Top 8%)884(Top 18%)
24M24.00 mi1.00 mi8406+1711356+421356+425598(Top 21%)757(Top 7%)757(Top 15%)
40K24.85 mi0.85 mi8262+1441323+331323+335302(Top 20%)761(Top 7%)761(Top 16%)
25.2M25.20 mi0.35 mi8197+651308+151308+155627(Top 21%)940(Top 8%)940(Top 19%)
Finish26.22 mi1.02 mi8028+1691268+401268+404958(Top 19%)718(Top 6%)718(Top 15%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

10391

Females

2018

F18-39

2018

5K→10K

3.1 - 6.2 mi

Top 39%
×5story building
+79ft-138ft

Overall

10323

Females

1966

F18-39

1966

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

10391

Females

2018

F18-39

2018

15K→20K

9.3 - 12.4 mi

Top 36%
×5story building
+106ft-86ft

Overall

9655

Females

1752

F18-39

1752

20K→Half

12.4 - 13.1 mi

Top 36%
×2story building
+19ft-37ft

Overall

9639

Females

1710

F18-39

1710

Half→25K

13.1 - 15.5 mi

Top 32%
×4story building
+66ft-88ft

Overall

8631

Females

1395

F18-39

1395

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8125

Females

1356

F18-39

1356

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

7544

Females

1232

F18-39

1232

20M→21M

20.0 - 21.0 mi

Top 25%
×8story building
+106ft-24ft

Overall

6575

Females

972

F18-39

972

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7223

Females

1185

F18-39

1185

35K→23M

21.8 - 23.0 mi

Top 23%
×5story building
+23ft-63ft

Overall

6198

Females

884

F18-39

884

23M→24M

23.0 - 24.0 mi

Top 21%
×6story building
+12ft-82ft

Overall

5598

Females

757

F18-39

757

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5302

Females

761

F18-39

761

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5627

Females

940

F18-39

940

25.2M→Finish

25.2 - 26.2 mi

Top 19%
×2story building
+22ft-21ft

Overall

4958

Females

718

F18-39

718

Passing Analysis

Category:
Athletes Passed
2077*
Passed By
1495
Net Change
+582
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8610
5K → 10K57844-787#8610#9397
10K → 15K73364-291#9397#9688
15K → 20K165135+30#9688#9658
20K → Half2714+13#9658#9645
Half → 25K21735+182#9645#9463
25K → 30K332*47+285#9463#9178
30K → 20M16813+155#9178#9023
20M → 21M1718+163#9023#8860
21M → 35K8611+75#8860#8785
35K → 23M2135+208#8785#8577
23M → 24M1776+171#8577#8406
24M → 40K1451+144#8406#8262
40K → 25.2M672+65#8262#8197
25.2M → Finish17910+169#8197#8028
TOTALS2077*1495+582

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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