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BOSTON MARATHON 2023

Erin Merkley

Bib: 17382•F

ON

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 38%
Gender (Female)
#0 / 11423
Top 19%
Division (F18-39)
#0 / 4884
Top 34%
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
7:32/mi
23:25
↑ 97↓ 3451.5%
10K· 6.21 mi
7:24/mi
46:24
↑ 79↓ 1380.4%
15K· 9.32 mi
7:32/mi
1:09:48
↑ 67↓ 78
20K· 12.43 mi
7:38/mi
1:33:31
↑ 106↓ 860.1%
Half· 13.11 mi
7:36/mi
1:38:42
↑ 19↓ 370.5%
25K· 15.53 mi
7:44/mi
1:57:26
↑ 66↓ 880.2%
30K· 18.64 mi
7:58/mi
2:22:10
↑ 181↓ 1480.2%
20M
8:11/mi
2:33:17
↑ 64↓ 500.2%
21M
8:39/mi
2:41:56
↑ 106↓ 241.6%
35K· 21.75 mi
7:42/mi
2:47:42
↑ 17↓ 861.7%
23M
8:09/mi
2:57:54
↑ 23↓ 630.6%
24M
7:46/mi
3:05:40
↓ 821.3%
40K· 24.85 mi
7:54/mi
3:12:25
↓ 200.3%
25.2M
9:14/mi
3:15:36
↑ 13↓ 160.2%
Finish· 26.22 mi
7:49/mi
3:23:34
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:42
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time1:44:52
Pace8:00 /mi
📊Positive Split: 6.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:0423:257:3223:25
7:32
-
10K
6.21 mi11:37:0346:247:2822:59
7:24
-0:08
15K
9.32 mi12:00:271:09:487:2923:24
7:32
+0:08
20K
12.43 mi12:24:101:33:317:3223:43
7:38
+0:06
Half
13.11 mi12:29:211:38:427:325:11
7:36
-0:02
25K
15.53 mi12:48:051:57:267:3418:44
7:44
+0:08
30K
18.64 mi13:12:492:22:107:3824:44
7:58
+0:14
20M
20.00 mi13:23:562:33:177:4011:07
8:11
+0:13
21M
21.00 mi13:32:352:41:567:438:39
8:39
+0:28
35K
21.75 mi13:38:212:47:427:435:46
7:42
-0:57
23M
23.00 mi13:48:332:57:547:4410:12
8:09
+0:27
24M
24.00 mi13:56:193:05:407:447:46
7:46
-0:23
40K
24.85 mi14:03:043:12:257:446:45
7:54
+0:08
25.2M
25.20 mi14:06:153:15:367:463:11
9:14
+1:20
Finish
26.22 mi14:14:133:23:347:467:58
7:49
-1:25

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

7:24 /mi

Average Pace

7:46 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:09:48

34% of race

Time at Steady Pace

1:40:37

49% of race

Time at Slower Pace

33:09

16% of race

Average Pace: 7:46 /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 mi11:14:0423:257:3223:25
7:32
#9976
10K
6.21 mi11:37:0346:247:2822:59
7:24
#9739
15K
9.32 mi12:00:271:09:487:2923:24
7:32
#9941
20K
12.43 mi12:24:101:33:317:3223:43
7:38
#10053
Half
13.11 mi12:29:211:38:427:325:11
7:36
#10097
25K
15.53 mi12:48:051:57:267:3418:44
7:44
#10143
30K
18.64 mi13:12:492:22:107:3824:44
7:58
#10188
20M
20.00 mi13:23:562:33:177:4011:07
8:11
#10271
21M
21.00 mi13:32:352:41:567:438:39
8:39
#10317
35K
21.75 mi13:38:212:47:427:435:46
7:42
#10289
23M
23.00 mi13:48:332:57:547:4410:12
8:09
#10285
24M
24.00 mi13:56:193:05:407:447:46
7:46
#10235
40K
24.85 mi14:03:043:12:257:446:45
7:54
#10160
25.2M
25.20 mi14:06:153:15:367:463:11
9:14
#10224
Finish
26.22 mi14:14:133:23:347:467:58
7:49
#10226
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi99761851185110446(Top 39%)2047(Top 18%)2047(Top 42%)
10K6.21 mi3.10 mi9739+2371722+1291722+1299628(Top 36%)1671(Top 15%)1671(Top 34%)
15K9.32 mi3.11 mi9941-2021802-801802-8010446(Top 39%)2047(Top 18%)2047(Top 42%)
20K12.43 mi3.11 mi10053-1121853-511853-5110373(Top 39%)2082(Top 18%)2082(Top 43%)
Half13.11 mi0.68 mi10097-441880-271880-2711039(Top 41%)2381(Top 21%)2381(Top 49%)
25K15.53 mi2.42 mi10143-461924-441924-4410516(Top 40%)2239(Top 20%)2239(Top 46%)
30K18.64 mi3.11 mi10188-451984-601984-6010588(Top 40%)2440(Top 21%)2440(Top 50%)
20M20.00 mi1.36 mi10271-832056-722056-7211565(Top 43%)3027(Top 26%)3027(Top 62%)
21M21.00 mi1.00 mi10317-462108-522108-5211358(Top 43%)3056(Top 27%)3056(Top 63%)
35K21.75 mi0.75 mi10289+282107+12107+110028(Top 38%)2366(Top 21%)2366(Top 48%)
23M23.00 mi1.25 mi10285+42137-302137-3010814(Top 41%)2916(Top 26%)2916(Top 60%)
24M24.00 mi1.00 mi10235+502142-52142-59554(Top 36%)2364(Top 21%)2364(Top 48%)
40K24.85 mi0.85 mi10160+752130+122130+129336(Top 35%)2318(Top 20%)2318(Top 47%)
25.2M25.20 mi0.35 mi10224-642175-452175-4513808(Top 52%)4619(Top 40%)4619(Top 95%)
Finish26.22 mi1.02 mi10226-22210-352210-3510812(Top 41%)3086(Top 27%)3086(Top 63%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

10446

Females

2047

F18-39

2047

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

9628

Females

1671

F18-39

1671

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

10446

Females

2047

F18-39

2047

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

10373

Females

2082

F18-39

2082

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11039

Females

2381

F18-39

2381

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

10516

Females

2239

F18-39

2239

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

10588

Females

2440

F18-39

2440

30K→20M

18.6 - 20.0 mi

Top 43%
×5story building
+64ft-50ft

Overall

11565

Females

3027

F18-39

3027

20M→21M

20.0 - 21.0 mi

Top 43%
×8story building
+106ft-24ft

Overall

11358

Females

3056

F18-39

3056

21M→35K

21.0 - 21.8 mi

Top 38%
×7story building
+17ft-86ft

Overall

10028

Females

2366

F18-39

2366

35K→23M

21.8 - 23.0 mi

Top 41%
×5story building
+23ft-63ft

Overall

10814

Females

2916

F18-39

2916

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

9554

Females

2364

F18-39

2364

24M→40K

24.0 - 24.9 mi

Top 35%
×1story
+6ft-20ft

Overall

9336

Females

2318

F18-39

2318

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13808

Females

4619

F18-39

4619

25.2M→Finish

25.2 - 26.2 mi

Top 41%
×2story building
+22ft-21ft

Overall

10812

Females

3086

F18-39

3086

Passing Analysis

Category:
Athletes Passed
1484*
Passed By
1733
Net Change
-250
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9976
5K → 10K442205+237#9976#9739
10K → 15K103304-202#9739#9941
15K → 20K133245-112#9941#10053
20K → Half1559-44#10053#10097
Half → 25K107153-46#10097#10143
25K → 30K143*188-45#10143#10188
30K → 20M56*139-83#10188#10271
20M → 21M71117-46#10271#10317
21M → 35K5830+28#10317#10289
35K → 23M8884+4#10289#10285
23M → 24M8434+50#10285#10235
24M → 40K10732+75#10235#10160
40K → 25.2M12*76-64#10160#10224
25.2M → Finish6567-2#10224#10226
TOTALS1484*1733-250

* 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