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BOSTON MARATHON 2023

Seong Bog Choi

Bib: 31735•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:56
Rank: #20396
Start → 5K
8:59/mi
27:56 split
10K· 6.21 mi
54:38
Rank: #19626 (+770)
5K → 10K
8:36/mi
26:42 split
15K· 9.32 mi
1:20:35
Rank: #18724 (+902)
10K → 15K
8:21/mi
25:57 split
20K· 12.43 mi
1:47:16
Rank: #18393 (+331)
15K → 20K
8:35/mi
26:41 split
Half· 13.11 mi
1:53:22
Rank: #18493 (-100)
20K → Half
8:56/mi
6:06 split
25K· 15.53 mi
2:15:04
Rank: #18538 (-45)
Half → 25K
8:57/mi
21:42 split
30K· 18.64 mi
2:41:28
Rank: #17724 (+814)
25K → 30K
8:30/mi
26:24 split
20M
2:52:57
Rank: #17399 (+325)
30K → 20M
8:27/mi
11:29 split
21M
3:02:31
Rank: #17321 (+78)
20M → 21M
9:34/mi
9:34 split
35K· 21.75 mi
3:09:38
Rank: #17462 (-141)
21M → 35K
9:31/mi
7:07 split
23M
3:20:10
Rank: #17185 (+277)
35K → 23M
8:25/mi
10:32 split
24M
3:28:19
Rank: #16977 (+208)
23M → 24M
8:09/mi
8:09 split
40K· 24.85 mi
3:35:32
Rank: #16827 (+150)
24M → 40K
8:26/mi
7:13 split
25.2M
3:39:21
Rank: #16930 (-103)
40K → 25.2M
11:04/mi
3:49 split
Finish· 26.22 mi
3:47:58
Rank: #16839 (+91)
25.2M → Finish
8:27/mi
8:37 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:22
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time1:54:36
Pace8:45 /mi
📊Positive Split: 1.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:3827:568:5927:56
8:59
-
10K
6.21 mi12:14:2054:388:4826:42
8:36
-0:23
15K
9.32 mi12:40:171:20:358:3925:57
8:21
-0:15
20K
12.43 mi13:06:581:47:168:3826:41
8:35
+0:14
Half
13.11 mi13:13:041:53:228:396:06
8:56
+0:21
25K
15.53 mi13:34:462:15:048:4221:42
8:57
+0:01
30K
18.64 mi14:01:102:41:288:4026:24
8:30
-0:27
20M
20.00 mi14:12:392:52:578:3911:29
8:27
-0:03
21M
21.00 mi14:22:133:02:318:419:34
9:34
+1:07
35K
21.75 mi14:29:203:09:388:437:07
9:31
-0:03
23M
23.00 mi14:39:523:20:108:4210:32
8:25
-1:06
24M
24.00 mi14:48:013:28:198:418:09
8:09
-0:16
40K
24.85 mi14:55:143:35:328:407:13
8:26
+0:17
25.2M
25.20 mi14:59:033:39:218:423:49
11:04
+2:38
Finish
26.22 mi15:07:403:47:588:428:37
8:27
-2:37

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

8:09 /mi

Average Pace

8:42 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

8:09

4% of race

Time at Steady Pace

2:29:41

66% of race

Time at Slower Pace

1:10:08

31% of race

Average Pace: 8:42 /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 mi11:47:3827:568:5927:56
8:59
#20396
10K
6.21 mi12:14:2054:388:4826:42
8:36
#19626
15K
9.32 mi12:40:171:20:358:3925:57
8:21
#18724
20K
12.43 mi13:06:581:47:168:3826:41
8:35
#18393
Half
13.11 mi13:13:041:53:228:396:06
8:56
#18493
25K
15.53 mi13:34:462:15:048:4221:42
8:57
#18538
30K
18.64 mi14:01:102:41:288:4026:24
8:30
#17724
20M
20.00 mi14:12:392:52:578:3911:29
8:27
#17399
21M
21.00 mi14:22:133:02:318:419:34
9:34
#17321
35K
21.75 mi14:29:203:09:388:437:07
9:31
#17462
23M
23.00 mi14:39:523:20:108:4210:32
8:25
#17185
24M
24.00 mi14:48:013:28:198:418:09
8:09
#16977
40K
24.85 mi14:55:143:35:328:407:13
8:26
#16827
25.2M
25.20 mi14:59:033:39:218:423:49
11:04
#16930
Finish
26.22 mi15:07:403:47:588:428:37
8:27
#16839
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi20396123211232116855(Top 63%)11008(Top 73%)11008(Top 992%)
10K6.21 mi3.10 mi19626+77012055+26612055+26618803(Top 71%)11819(Top 78%)11819(Top 1065%)
15K9.32 mi3.11 mi18724+90211747+30811747+30816855(Top 63%)11008(Top 73%)11008(Top 992%)
20K12.43 mi3.11 mi18393+33111624+12311624+12317410(Top 65%)11217(Top 74%)11217(Top 1011%)
Half13.11 mi0.68 mi18493-10011671-4711671-4720126(Top 76%)12353(Top 81%)12353(Top 1113%)
25K15.53 mi2.42 mi18538-4511665+611665+618697(Top 70%)11711(Top 77%)11711(Top 1055%)
30K18.64 mi3.11 mi17724+81411315+35011315+35014300(Top 54%)9776(Top 64%)9776(Top 881%)
20M20.00 mi1.36 mi17399+32511162+15311162+15313333(Top 50%)9291(Top 61%)9291(Top 837%)
21M21.00 mi1.00 mi17321+7811111+5111111+5116260(Top 61%)10468(Top 69%)10468(Top 943%)
35K21.75 mi0.75 mi17462-14111161-5011161-5019867(Top 75%)11988(Top 79%)11988(Top 1080%)
23M23.00 mi1.25 mi17185+27711039+12211039+12212658(Top 48%)8767(Top 58%)8767(Top 790%)
24M24.00 mi1.00 mi16977+20810925+11410925+11412251(Top 46%)8524(Top 56%)8524(Top 768%)
40K24.85 mi0.85 mi16827+15010845+8010845+8012971(Top 49%)8777(Top 58%)8777(Top 791%)
25.2M25.20 mi0.35 mi16930-10310876-3110876-3120574(Top 77%)12181(Top 80%)12181(Top 1097%)
Finish26.22 mi1.02 mi16839+9110836+4010836+4015112(Top 57%)9786(Top 64%)9786(Top 882%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

16855

Males

11008

M60-64

11008

5K→10K

3.1 - 6.2 mi

Top 71%
×5story building
+79ft-138ft

Overall

18803

Males

11819

M60-64

11819

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

16855

Males

11008

M60-64

11008

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

17410

Males

11217

M60-64

11217

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

20126

Males

12353

M60-64

12353

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18697

Males

11711

M60-64

11711

25K→30K

15.5 - 18.6 mi

Top 54%
×9story building
+181ft-148ft

Overall

14300

Males

9776

M60-64

9776

30K→20M

18.6 - 20.0 mi

Top 50%
×5story building
+64ft-50ft

Overall

13333

Males

9291

M60-64

9291

20M→21M

20.0 - 21.0 mi

Top 61%
×8story building
+106ft-24ft

Overall

16260

Males

10468

M60-64

10468

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

19867

Males

11988

M60-64

11988

35K→23M

21.8 - 23.0 mi

Top 48%
×5story building
+23ft-63ft

Overall

12658

Males

8767

M60-64

8767

23M→24M

23.0 - 24.0 mi

Top 46%
×6story building
+12ft-82ft

Overall

12251

Males

8524

M60-64

8524

24M→40K

24.0 - 24.9 mi

Top 49%
×1story
+6ft-20ft

Overall

12971

Males

8777

M60-64

8777

40K→25.2M

24.9 - 25.2 mi

Top 77%
×1story
+13ft-16ft

Overall

20574

Males

12181

M60-64

12181

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2story building
+22ft-21ft

Overall

15112

Males

9786

M60-64

9786

Passing Analysis

Category:
Athletes Passed
4325
Passed By
768
Net Change
+3557
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20396
5K → 10K85585+770#20396#19626
10K → 15K91614+902#19626#18724
15K → 20K36635+331#18724#18393
20K → Half9109-100#18393#18493
Half → 25K120165-45#18493#18538
25K → 30K8173+814#18538#17724
30K → 20M3250+325#17724#17399
20M → 21M12648+78#17399#17321
21M → 35K20161-141#17321#17462
35K → 23M2825+277#17462#17185
23M → 24M2091+208#17185#16977
24M → 40K1522+150#16977#16827
40K → 25.2M8111-103#16827#16930
25.2M → Finish12029+91#16930#16839
TOTALS4325768+3557
📊

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