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BOSTON MARATHON 2023

Jun Sung Park

Bib: 13452•M

MO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 29%
Gender (Male)
#0 / 15176
Top 43%
Masters (Masters Men)
#0 / 9891
Top 31%
Division (M45-49)
#0 / 2252
Top 41%
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
7:04/mi
21:58
↑ 97↓ 3451.5%
10K· 6.21 mi
7:02/mi
43:50
↑ 79↓ 1380.4%
15K· 9.32 mi
7:13/mi
1:06:15
↑ 67↓ 78
20K· 12.43 mi
7:21/mi
1:29:04
↑ 106↓ 860.1%
Half· 13.11 mi
7:14/mi
1:34:00
↑ 19↓ 370.5%
25K· 15.53 mi
7:27/mi
1:52:03
↑ 66↓ 880.2%
30K· 18.64 mi
7:41/mi
2:15:54
↑ 181↓ 1480.2%
20M
7:44/mi
2:26:25
↑ 64↓ 500.2%
21M
8:17/mi
2:34:42
↑ 106↓ 241.6%
35K· 21.75 mi
7:37/mi
2:40:24
↑ 17↓ 861.7%
23M
7:50/mi
2:50:12
↑ 23↓ 630.6%
24M
7:36/mi
2:57:48
↓ 821.3%
40K· 24.85 mi
7:49/mi
3:04:29
↓ 200.3%
25.2M
8:25/mi
3:07:23
↑ 13↓ 160.2%
Finish· 26.22 mi
7:35/mi
3:15:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:00
Pace7:10 /mi
2nd Half
Distance13.11 mi
Time1:41:07
Pace7:43 /mi
📊Positive Split: 7.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:12:4021:587:0421:58
7:04
-
10K
6.21 mi11:34:3243:507:0321:52
7:02
-0:02
15K
9.32 mi11:56:571:06:157:0622:25
7:13
+0:11
20K
12.43 mi12:19:461:29:047:1022:49
7:21
+0:08
Half
13.11 mi12:24:421:34:007:104:56
7:14
-0:07
25K
15.53 mi12:42:451:52:037:1318:03
7:27
+0:13
30K
18.64 mi13:06:362:15:547:1723:51
7:41
+0:14
20M
20.00 mi13:17:072:26:257:1910:31
7:44
+0:03
21M
21.00 mi13:25:242:34:427:228:17
8:17
+0:33
35K
21.75 mi13:31:062:40:247:235:42
7:37
-0:40
23M
23.00 mi13:40:542:50:127:249:48
7:50
+0:13
24M
24.00 mi13:48:302:57:487:257:36
7:36
-0:14
40K
24.85 mi13:55:113:04:297:256:41
7:49
+0:13
25.2M
25.20 mi13:58:053:07:237:262:54
8:25
+0:36
Finish
26.22 mi14:05:493:15:077:277:44
7:35
-0:50

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

7:02 /mi

Average Pace

7:27 /mi

Slowest Pace

8:25 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:47:27

86% of race

Time at Steady Pace

24:46

13% of race

Time at Slower Pace

2:54

1% of race

Average Pace: 7:26 /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 mi11:12:4021:587:0421:58
7:04
#6696
10K
6.21 mi11:34:3243:507:0321:52
7:02
#6827
15K
9.32 mi11:56:571:06:157:0622:25
7:13
#7158
20K
12.43 mi12:19:461:29:047:1022:49
7:21
#7321
Half
13.11 mi12:24:421:34:007:104:56
7:14
#7350
25K
15.53 mi12:42:451:52:037:1318:03
7:27
#7454
30K
18.64 mi13:06:362:15:547:1723:51
7:41
#7573
20M
20.00 mi13:17:072:26:257:1910:31
7:44
#7593
21M
21.00 mi13:25:242:34:427:228:17
8:17
#7638
35K
21.75 mi13:31:062:40:247:235:42
7:37
#7666
23M
23.00 mi13:40:542:50:127:249:48
7:50
#7687
24M
24.00 mi13:48:302:57:487:257:36
7:36
#7683
40K
24.85 mi13:55:113:04:297:256:41
7:49
#7729
25.2M
25.20 mi13:58:053:07:237:262:54
8:25
#7733
Finish
26.22 mi14:05:493:15:077:277:44
7:35
#7763
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi6696604060407892(Top 30%)6847(Top 45%)6847(Top 304%)
10K6.21 mi3.10 mi6827-1316137-976137-977067(Top 27%)6288(Top 41%)6288(Top 279%)
15K9.32 mi3.11 mi7158-3316373-2366373-2367892(Top 30%)6847(Top 45%)6847(Top 304%)
20K12.43 mi3.11 mi7321-1636481-1086481-1088101(Top 30%)6953(Top 46%)6953(Top 309%)
Half13.11 mi0.68 mi7350-296503-226503-228059(Top 30%)6931(Top 46%)6931(Top 308%)
25K15.53 mi2.42 mi7454-1046566-636566-638349(Top 31%)7028(Top 46%)7028(Top 312%)
30K18.64 mi3.11 mi7573-1196608-426608-428466(Top 32%)6959(Top 46%)6959(Top 309%)
20M20.00 mi1.36 mi7593-206595+136595+138410(Top 32%)6835(Top 45%)6835(Top 304%)
21M21.00 mi1.00 mi7638-456609-146609-149101(Top 34%)7116(Top 47%)7116(Top 316%)
35K21.75 mi0.75 mi7666-286622-136622-139355(Top 35%)7260(Top 48%)7260(Top 322%)
23M23.00 mi1.25 mi7687-216618+46618+48580(Top 32%)6738(Top 44%)6738(Top 299%)
24M24.00 mi1.00 mi7683+46591+276591+278366(Top 31%)6528(Top 43%)6528(Top 290%)
40K24.85 mi0.85 mi7729-466598-76598-78761(Top 33%)6685(Top 44%)6685(Top 297%)
25.2M25.20 mi0.35 mi7733-46591+76591+78891(Top 33%)6664(Top 44%)6664(Top 296%)
Finish26.22 mi1.02 mi7763-306590+16590+19170(Top 34%)6840(Top 45%)6840(Top 304%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

7892

Males

6847

M45-49

6847

5K→10K

3.1 - 6.2 mi

Top 27%
×5story building
+79ft-138ft

Overall

7067

Males

6288

M45-49

6288

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

7892

Males

6847

M45-49

6847

15K→20K

9.3 - 12.4 mi

Top 30%
×5story building
+106ft-86ft

Overall

8101

Males

6953

M45-49

6953

20K→Half

12.4 - 13.1 mi

Top 30%
×2story building
+19ft-37ft

Overall

8059

Males

6931

M45-49

6931

Half→25K

13.1 - 15.5 mi

Top 31%
×4story building
+66ft-88ft

Overall

8349

Males

7028

M45-49

7028

25K→30K

15.5 - 18.6 mi

Top 32%
×9story building
+181ft-148ft

Overall

8466

Males

6959

M45-49

6959

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

8410

Males

6835

M45-49

6835

20M→21M

20.0 - 21.0 mi

Top 34%
×8story building
+106ft-24ft

Overall

9101

Males

7116

M45-49

7116

21M→35K

21.0 - 21.8 mi

Top 35%
×7story building
+17ft-86ft

Overall

9355

Males

7260

M45-49

7260

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

8580

Males

6738

M45-49

6738

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8366

Males

6528

M45-49

6528

24M→40K

24.0 - 24.9 mi

Top 33%
×1story
+6ft-20ft

Overall

8761

Males

6685

M45-49

6685

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8891

Males

6664

M45-49

6664

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9170

Males

6840

M45-49

6840

Passing Analysis

Category:
Athletes Passed
809
Passed By
1876
Net Change
-1067
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6696
5K → 10K136267-131#6696#6827
10K → 15K36367-331#6827#7158
15K → 20K70233-163#7158#7321
20K → Half1241-29#7321#7350
Half → 25K46150-104#7350#7454
25K → 30K101220-119#7454#7573
30K → 20M6888-20#7573#7593
20M → 21M4590-45#7593#7638
21M → 35K2957-28#7638#7666
35K → 23M7495-21#7666#7687
23M → 24M7066+4#7687#7683
24M → 40K4591-46#7683#7729
40K → 25.2M2731-4#7729#7733
25.2M → Finish5080-30#7733#7763
TOTALS8091876-1067
📊

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