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BOSTON MARATHON 2023

Sarah Muckian James

Bib: 13789•F

AZ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 17%
Gender (Female)
#0 / 11423
Top 3%
Masters (Masters Women)
#0 / 6539
Top 0.8%
Division (F40-44)
#0 / 1878
Top 2%
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
7:19/mi
22:44
↑ 97↓ 3451.5%
10K· 6.21 mi
6:49/mi
43:55
↑ 79↓ 1380.4%
15K· 9.32 mi
6:55/mi
1:05:24
↑ 67↓ 78
20K· 12.43 mi
6:50/mi
1:26:39
↑ 106↓ 860.1%
Half· 13.11 mi
6:37/mi
1:31:10
↑ 19↓ 370.5%
25K· 15.53 mi
6:49/mi
1:47:42
↑ 66↓ 880.2%
30K· 18.64 mi
6:55/mi
2:09:10
↑ 181↓ 1480.2%
20M
6:54/mi
2:18:33
↑ 64↓ 500.2%
21M
7:26/mi
2:25:59
↑ 106↓ 241.6%
35K· 21.75 mi
6:32/mi
2:30:52
↑ 17↓ 861.7%
23M
6:49/mi
2:39:24
↑ 23↓ 630.6%
24M
6:42/mi
2:46:06
↓ 821.3%
40K· 24.85 mi
6:51/mi
2:51:57
↓ 200.3%
25.2M
7:03/mi
2:54:23
↑ 13↓ 160.2%
Finish· 26.22 mi
6:34/mi
3:01:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:31:10
Pace6:57 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:29:55
Pace6:52 /mi
📊Negative Split: 1.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:1222:447:1922:44
7:19
-
10K
6.21 mi11:12:2343:557:0421:11
6:49
-0:30
15K
9.32 mi11:33:521:05:247:0121:29
6:55
+0:06
20K
12.43 mi11:55:071:26:396:5821:15
6:50
-0:05
Half
13.11 mi11:59:381:31:106:574:31
6:37
-0:13
25K
15.53 mi12:16:101:47:426:5616:32
6:49
+0:12
30K
18.64 mi12:37:382:09:106:5621:28
6:55
+0:06
20M
20.00 mi12:47:012:18:336:569:23
6:54
-0:01
21M
21.00 mi12:54:272:25:596:577:26
7:26
+0:32
35K
21.75 mi12:59:202:30:526:564:53
6:32
-0:54
23M
23.00 mi13:07:522:39:246:568:32
6:49
+0:17
24M
24.00 mi13:14:342:46:066:556:42
6:42
-0:07
40K
24.85 mi13:20:252:51:576:555:51
6:51
+0:09
25.2M
25.20 mi13:22:512:54:236:552:26
7:03
+0:12
Finish
26.22 mi13:29:333:01:056:556:42
6:34
-0:29

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

6:32 /mi

Average Pace

6:55 /mi

Slowest Pace

7:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:30:55

83% of race

Time at Steady Pace

30:10

17% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:54 /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 mi10:51:1222:447:1922:44
7:19
#8216
10K
6.21 mi11:12:2343:557:0421:11
6:49
#6906
15K
9.32 mi11:33:521:05:247:0121:29
6:55
#6604
20K
12.43 mi11:55:071:26:396:5821:15
6:50
#6174
Half
13.11 mi11:59:381:31:106:574:31
6:37
#6082
25K
15.53 mi12:16:101:47:426:5616:32
6:49
#5786
30K
18.64 mi12:37:382:09:106:5621:28
6:55
#5405
20M
20.00 mi12:47:012:18:336:569:23
6:54
#5208
21M
21.00 mi12:54:272:25:596:577:26
7:26
#5103
35K
21.75 mi12:59:202:30:526:564:53
6:32
#4981
23M
23.00 mi13:07:522:39:246:568:32
6:49
#4789
24M
24.00 mi13:14:342:46:066:556:42
6:42
#4672
40K
24.85 mi13:20:252:51:576:555:51
6:51
#4585
25.2M
25.20 mi13:22:512:54:236:552:26
7:03
#4531
Finish
26.22 mi13:29:333:01:056:556:42
6:34
#4437
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi8216108710876070(Top 23%)549(Top 5%)549(Top 29%)
10K6.21 mi3.10 mi6906+1310700+387700+3875487(Top 21%)425(Top 4%)425(Top 23%)
15K9.32 mi3.11 mi6604+302641+59641+596070(Top 23%)549(Top 5%)549(Top 29%)
20K12.43 mi3.11 mi6174+430556+85556+854832(Top 18%)341(Top 3%)341(Top 18%)
Half13.11 mi0.68 mi6082+92532+24532+243686(Top 14%)205(Top 2%)205(Top 11%)
25K15.53 mi2.42 mi5786+296468+64468+644345(Top 16%)289(Top 3%)289(Top 15%)
30K18.64 mi3.11 mi5405+381412+56412+563733(Top 14%)231(Top 2%)231(Top 12%)
20M20.00 mi1.36 mi5208+197389+23389+233488(Top 13%)230(Top 2%)230(Top 12%)
21M21.00 mi1.00 mi5103+105384+5384+54311(Top 16%)362(Top 3%)362(Top 19%)
35K21.75 mi0.75 mi4981+122368+16368+162638(Top 10%)155(Top 1%)155(Top 8%)
23M23.00 mi1.25 mi4789+192338+30338+302774(Top 10%)180(Top 2%)180(Top 10%)
24M24.00 mi1.00 mi4672+117324+14324+143141(Top 12%)228(Top 2%)228(Top 12%)
40K24.85 mi0.85 mi4585+87317+7317+73060(Top 11%)247(Top 2%)247(Top 13%)
25.2M25.20 mi0.35 mi4531+54311+6311+62021(Top 8%)133(Top 1%)133(Top 7%)
Finish26.22 mi1.02 mi4437+94301+10301+102887(Top 11%)268(Top 2%)268(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 23%
×21story building
+97ft-345ft

Overall

6070

Females

549

F40-44

549

5K→10K

3.1 - 6.2 mi

Top 21%
×5story building
+79ft-138ft

Overall

5487

Females

425

F40-44

425

10K→15K

6.2 - 9.3 mi

Top 23%
×3story building
+67ft-78ft

Overall

6070

Females

549

F40-44

549

15K→20K

9.3 - 12.4 mi

Top 18%
×5story building
+106ft-86ft

Overall

4832

Females

341

F40-44

341

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

3686

Females

205

F40-44

205

Half→25K

13.1 - 15.5 mi

Top 16%
×4story building
+66ft-88ft

Overall

4345

Females

289

F40-44

289

25K→30K

15.5 - 18.6 mi

Top 14%
×9story building
+181ft-148ft

Overall

3733

Females

231

F40-44

231

30K→20M

18.6 - 20.0 mi

Top 13%
×5story building
+64ft-50ft

Overall

3488

Females

230

F40-44

230

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

4311

Females

362

F40-44

362

21M→35K

21.0 - 21.8 mi

Top 10%
×7story building
+17ft-86ft

Overall

2638

Females

155

F40-44

155

35K→23M

21.8 - 23.0 mi

Top 10%
×5story building
+23ft-63ft

Overall

2774

Females

180

F40-44

180

23M→24M

23.0 - 24.0 mi

Top 12%
×6story building
+12ft-82ft

Overall

3141

Females

228

F40-44

228

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

3060

Females

247

F40-44

247

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2021

Females

133

F40-44

133

25.2M→Finish

25.2 - 26.2 mi

Top 11%
×2story building
+22ft-21ft

Overall

2887

Females

268

F40-44

268

Passing Analysis

Category:
Athletes Passed
3861
Passed By
82
Net Change
+3779
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8216
5K → 10K13133+1310#8216#6906
10K → 15K31917+302#6906#6604
15K → 20K4311+430#6604#6174
20K → Half920+92#6174#6082
Half → 25K3004+296#6082#5786
25K → 30K3898+381#5786#5405
30K → 20M2003+197#5405#5208
20M → 21M12217+105#5208#5103
21M → 35K1220+122#5103#4981
35K → 23M1975+192#4981#4789
23M → 24M1236+117#4789#4672
24M → 40K947+87#4672#4585
40K → 25.2M540+54#4585#4531
25.2M → Finish10511+94#4531#4437
TOTALS386182+3779
📊

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