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BOSTON MARATHON 2023

Susan Merolillo

Bib: 12081•F

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 39%
Gender (Female)
#0 / 11423
Top 21%
Masters (Masters Women)
#0 / 6539
Top 9%
Division (F50-54)
#0 / 1207
Top 5%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:18
Rank: #9649
Start → 5K
23:18 | 7:30/mi
10K· 6.21 mi
46:13
Rank: #9488 (+161)
5K → 10K
22:55 | 7:23/mi
15K· 9.32 mi
1:09:37
Rank: #9776 (-288)
10K → 15K
23:24 | 7:32/mi
20K· 12.43 mi
1:33:16
Rank: #9875 (-99)
15K → 20K
23:39 | 7:37/mi
Half· 13.11 mi
1:38:27
Rank: #9939 (-64)
20K → Half
5:11 | 7:36/mi
25K· 15.53 mi
1:57:26
Rank: #10145 (-206)
Half → 25K
18:59 | 7:50/mi
30K· 18.64 mi
2:22:13
Rank: #10212 (-67)
25K → 30K
24:47 | 7:59/mi
20M
2:33:08
Rank: #10214 (-2)
30K → 20M
10:55 | 8:02/mi
21M
2:41:36
Rank: #10179 (+35)
20M → 21M
8:28 | 8:28/mi
35K· 21.75 mi
2:47:32
Rank: #10230 (-51)
21M → 35K
5:56 | 7:56/mi
23M
2:58:00
Rank: #10320 (-90)
35K → 23M
10:28 | 8:22/mi
24M
3:06:10
Rank: #10397 (-77)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
3:13:12
Rank: #10424 (-27)
24M → 40K
7:02 | 8:14/mi
25.2M
3:16:15
Rank: #10435 (-11)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:24:26
Rank: #10490 (-55)
25.2M → Finish
8:11 | 8:02/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:27
Pace7:31 /mi
2nd Half
Distance13.11 mi
Time1:45:59
Pace8:05 /mi
📊Positive Split: 7.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5423:187:3023:18
7:30
-
10K
6.21 mi11:13:4946:137:2622:55
7:23
-0:07
15K
9.32 mi11:37:131:09:377:2823:24
7:32
+0:09
20K
12.43 mi12:00:521:33:167:3023:39
7:37
+0:05
Half
13.11 mi12:06:031:38:277:315:11
7:36
-0:01
25K
15.53 mi12:25:021:57:267:3418:59
7:50
+0:14
30K
18.64 mi12:49:492:22:137:3824:47
7:59
+0:09
20M
20.00 mi13:00:442:33:087:3910:55
8:02
+0:03
21M
21.00 mi13:09:122:41:367:428:28
8:28
+0:26
35K
21.75 mi13:15:082:47:327:425:56
7:56
-0:32
23M
23.00 mi13:25:362:58:007:4410:28
8:22
+0:26
24M
24.00 mi13:33:463:06:107:458:10
8:10
-0:12
40K
24.85 mi13:40:483:13:127:467:02
8:14
+0:04
25.2M
25.20 mi13:43:513:16:157:473:03
8:51
+0:37
Finish
26.22 mi13:52:023:24:267:488:11
8:02
-0:49

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

7:23 /mi

Average Pace

7:48 /mi

Slowest Pace

8:51 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:47:15

82% of race

Time at Steady Pace

34:08

17% of race

Time at Slower Pace

3:03

1% of race

Average Pace: 7:48 /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 mi10:50:5423:187:3023:18
7:30
#9649
10K
6.21 mi11:13:4946:137:2622:55
7:23
#9488
15K
9.32 mi11:37:131:09:377:2823:24
7:32
#9776
20K
12.43 mi12:00:521:33:167:3023:39
7:37
#9875
Half
13.11 mi12:06:031:38:277:315:11
7:36
#9939
25K
15.53 mi12:25:021:57:267:3418:59
7:50
#10145
30K
18.64 mi12:49:492:22:137:3824:47
7:59
#10212
20M
20.00 mi13:00:442:33:087:3910:55
8:02
#10214
21M
21.00 mi13:09:122:41:367:428:28
8:28
#10179
35K
21.75 mi13:15:082:47:327:425:56
7:56
#10230
23M
23.00 mi13:25:362:58:007:4410:28
8:22
#10320
24M
24.00 mi13:33:463:06:107:458:10
8:10
#10397
40K
24.85 mi13:40:483:13:127:467:02
8:14
#10424
25.2M
25.20 mi13:43:513:16:157:473:03
8:51
#10435
Finish
26.22 mi13:52:023:24:267:488:11
8:02
#10490
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi96491683168310448(Top 39%)2049(Top 18%)2049(Top 170%)
10K6.21 mi3.10 mi9488+1611606+771606+779438(Top 35%)1604(Top 14%)1604(Top 133%)
15K9.32 mi3.11 mi9776-2881740-1341740-13410448(Top 39%)2049(Top 18%)2049(Top 170%)
20K12.43 mi3.11 mi9875-991784-441784-4410191(Top 38%)2001(Top 18%)2001(Top 166%)
Half13.11 mi0.68 mi9939-641814-301814-3011050(Top 42%)2392(Top 21%)2392(Top 198%)
25K15.53 mi2.42 mi10145-2061926-1121926-11211351(Top 43%)2682(Top 23%)2682(Top 222%)
30K18.64 mi3.11 mi10212-672002-762002-7610712(Top 40%)2497(Top 22%)2497(Top 207%)
20M20.00 mi1.36 mi10214-22030-282030-2810532(Top 40%)2499(Top 22%)2499(Top 207%)
21M21.00 mi1.00 mi10179+352032-22032-210309(Top 39%)2536(Top 22%)2536(Top 210%)
35K21.75 mi0.75 mi10230-512077-452077-4511622(Top 44%)3201(Top 28%)3201(Top 265%)
23M23.00 mi1.25 mi10320-902158-812158-8112306(Top 46%)3684(Top 32%)3684(Top 305%)
24M24.00 mi1.00 mi10397-772223-652223-6512385(Top 47%)3782(Top 33%)3782(Top 313%)
40K24.85 mi0.85 mi10424-272270-472270-4711554(Top 43%)3432(Top 30%)3432(Top 284%)
25.2M25.20 mi0.35 mi10435-112290-202290-2011600(Top 44%)3496(Top 31%)3496(Top 290%)
Finish26.22 mi1.02 mi10490-552342-522342-5212346(Top 46%)3877(Top 34%)3877(Top 321%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21stories
+97ft-345ft

Overall

10448

Females

2049

F50-54

2049

5K→10K

3.1 - 6.2 mi

Top 35%
×5stories
+79ft-138ft

Overall

9438

Females

1604

F50-54

1604

10K→15K

6.2 - 9.3 mi

Top 39%
×3stories
+67ft-78ft

Overall

10448

Females

2049

F50-54

2049

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10191

Females

2001

F50-54

2001

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

11050

Females

2392

F50-54

2392

Half→25K

13.1 - 15.5 mi

Top 43%
×4stories
+66ft-88ft

Overall

11351

Females

2682

F50-54

2682

25K→30K

15.5 - 18.6 mi

Top 40%
×9stories
+181ft-148ft

Overall

10712

Females

2497

F50-54

2497

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

10532

Females

2499

F50-54

2499

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10309

Females

2536

F50-54

2536

21M→35K

21.0 - 21.8 mi

Top 44%
×7stories
+17ft-86ft

Overall

11622

Females

3201

F50-54

3201

35K→23M

21.8 - 23.0 mi

Top 46%
×5stories
+23ft-63ft

Overall

12306

Females

3684

F50-54

3684

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

12385

Females

3782

F50-54

3782

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11554

Females

3432

F50-54

3432

40K→25.2M

24.9 - 25.2 mi

Top 44%
×1story
+13ft-16ft

Overall

11600

Females

3496

F50-54

3496

25.2M→Finish

25.2 - 26.2 mi

Top 46%
×2stories
+22ft-21ft

Overall

12346

Females

3877

F50-54

3877

Passing Analysis

Category:
Athletes Passed
1258*
Passed By
2098
Net Change
-841
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9649
5K → 10K378217+161#9649#9488
10K → 15K79367-288#9488#9776
15K → 20K126*225-99#9776#9875
20K → Half973-64#9875#9939
Half → 25K68273-206#9939#10145
25K → 30K135*202-67#10145#10212
30K → 20M84*86-2#10212#10214
20M → 21M9964+35#10214#10179
21M → 35K3081-51#10179#10230
35K → 23M63153-90#10230#10320
23M → 24M34111-77#10320#10397
24M → 40K6289-27#10397#10424
40K → 25.2M3344-11#10424#10435
25.2M → Finish58113-55#10435#10490
TOTALS1258*2098-841

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

📊

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