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BOSTON MARATHON 2023

Sung-Chul Hong

Bib: 21563•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
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
9:05/mi
28:13
↑ 97↓ 3451.5%
10K· 6.21 mi
8:47/mi
55:29
↑ 79↓ 1380.4%
15K· 9.32 mi
8:48/mi
1:22:48
↑ 67↓ 78
20K· 12.43 mi
8:50/mi
1:50:16
↑ 106↓ 860.1%
Half· 13.11 mi
8:46/mi
1:56:15
↑ 19↓ 370.5%
25K· 15.53 mi
8:55/mi
2:17:53
↑ 66↓ 880.2%
30K· 18.64 mi
9:13/mi
2:46:30
↑ 181↓ 1480.2%
20M
9:07/mi
2:58:53
↑ 64↓ 500.2%
21M
9:56/mi
3:08:49
↑ 106↓ 241.6%
35K· 21.75 mi
9:13/mi
3:15:43
↑ 17↓ 861.7%
23M
9:47/mi
3:27:58
↑ 23↓ 630.6%
24M
9:04/mi
3:37:02
↓ 821.3%
40K· 24.85 mi
9:24/mi
3:45:04
↓ 200.3%
25.2M
10:12/mi
3:48:35
↑ 13↓ 160.2%
Finish· 26.22 mi
9:26/mi
3:58:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:56:15
Pace8:52 /mi
2nd Half
Distance13.11 mi
Time2:01:57
Pace9:18 /mi
📊Positive Split: 4.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:5628:139:0528:13
9:05
-
10K
6.21 mi11:49:1255:298:5627:16
8:47
-0:18
15K
9.32 mi12:16:311:22:488:5327:19
8:48
+0:01
20K
12.43 mi12:43:591:50:168:5227:28
8:50
+0:02
Half
13.11 mi12:49:581:56:158:525:59
8:46
-0:04
25K
15.53 mi13:11:362:17:538:5321:38
8:55
+0:09
30K
18.64 mi13:40:132:46:308:5628:37
9:13
+0:18
20M
20.00 mi13:52:362:58:538:5712:23
9:07
-0:06
21M
21.00 mi14:02:323:08:498:599:56
9:56
+0:49
35K
21.75 mi14:09:263:15:439:006:54
9:13
-0:43
23M
23.00 mi14:21:413:27:589:0312:15
9:47
+0:34
24M
24.00 mi14:30:453:37:029:039:04
9:04
-0:43
40K
24.85 mi14:38:473:45:049:038:02
9:24
+0:20
25.2M
25.20 mi14:42:183:48:359:043:31
10:12
+0:48
Finish
26.22 mi14:51:553:58:129:059:37
9:26
-0:46

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

8:46 /mi

Average Pace

9:05 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:32:30

89% of race

Time at Steady Pace

25:42

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:05 /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 mi11:21:5628:139:0528:13
9:05
#20793
10K
6.21 mi11:49:1255:298:5627:16
8:47
#20339
15K
9.32 mi12:16:311:22:488:5327:19
8:48
#20045
20K
12.43 mi12:43:591:50:168:5227:28
8:50
#19714
Half
13.11 mi12:49:581:56:158:525:59
8:46
#19704
25K
15.53 mi13:11:362:17:538:5321:38
8:55
#19500
30K
18.64 mi13:40:132:46:308:5628:37
9:13
#19263
20M
20.00 mi13:52:362:58:538:5712:23
9:07
#19092
21M
21.00 mi14:02:323:08:498:599:56
9:56
#19013
35K
21.75 mi14:09:263:15:439:006:54
9:13
#19002
23M
23.00 mi14:21:413:27:589:0312:15
9:47
#19041
24M
24.00 mi14:30:453:37:029:039:04
9:04
#18974
40K
24.85 mi14:38:473:45:049:038:02
9:24
#18936
25.2M
25.20 mi14:42:183:48:359:043:31
10:12
#18920
Finish
26.22 mi14:51:553:58:129:059:37
9:26
#18986
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi20793125051250519462(Top 73%)12069(Top 80%)12069(Top 1087%)
10K6.21 mi3.10 mi20339+45412375+13012375+13019802(Top 74%)12199(Top 80%)12199(Top 1099%)
15K9.32 mi3.11 mi20045+29412258+11712258+11719462(Top 73%)12069(Top 80%)12069(Top 1087%)
20K12.43 mi3.11 mi19714+33112142+11612142+11618880(Top 71%)11843(Top 78%)11843(Top 1067%)
Half13.11 mi0.68 mi19704+1012146-412146-419311(Top 73%)12017(Top 79%)12017(Top 1083%)
25K15.53 mi2.42 mi19500+20412059+8712059+8718565(Top 70%)11653(Top 77%)11653(Top 1050%)
30K18.64 mi3.11 mi19263+23711949+11011949+11018216(Top 68%)11423(Top 75%)11423(Top 1029%)
20M20.00 mi1.36 mi19092+17111867+8211867+8217123(Top 64%)10867(Top 72%)10867(Top 979%)
21M21.00 mi1.00 mi19013+7911816+5111816+5117776(Top 67%)11135(Top 73%)11135(Top 1003%)
35K21.75 mi0.75 mi19002+1111803+1311803+1318823(Top 71%)11510(Top 76%)11510(Top 1037%)
23M23.00 mi1.25 mi19041-3911813-1011813-1019372(Top 73%)11730(Top 77%)11730(Top 1057%)
24M24.00 mi1.00 mi18974+6711769+4411769+4417528(Top 66%)10867(Top 72%)10867(Top 979%)
40K24.85 mi0.85 mi18936+3811752+1711752+1717922(Top 67%)10996(Top 72%)10996(Top 991%)
25.2M25.20 mi0.35 mi18920+1611739+1311739+1318089(Top 68%)11072(Top 73%)11072(Top 997%)
Finish26.22 mi1.02 mi18986-6611762-2311762-2319887(Top 75%)11932(Top 79%)11932(Top 1075%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

19462

Males

12069

M60-64

12069

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

19802

Males

12199

M60-64

12199

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

19462

Males

12069

M60-64

12069

15K→20K

9.3 - 12.4 mi

Top 71%
×5story building
+106ft-86ft

Overall

18880

Males

11843

M60-64

11843

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

19311

Males

12017

M60-64

12017

Half→25K

13.1 - 15.5 mi

Top 70%
×4story building
+66ft-88ft

Overall

18565

Males

11653

M60-64

11653

25K→30K

15.5 - 18.6 mi

Top 68%
×9story building
+181ft-148ft

Overall

18216

Males

11423

M60-64

11423

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

17123

Males

10867

M60-64

10867

20M→21M

20.0 - 21.0 mi

Top 67%
×8story building
+106ft-24ft

Overall

17776

Males

11135

M60-64

11135

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

18823

Males

11510

M60-64

11510

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19372

Males

11730

M60-64

11730

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

17528

Males

10867

M60-64

10867

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17922

Males

10996

M60-64

10996

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18089

Males

11072

M60-64

11072

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

19887

Males

11932

M60-64

11932

Passing Analysis

Category:
Athletes Passed
2541
Passed By
734
Net Change
+1807
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20793
5K → 10K602148+454#20793#20339
10K → 15K37076+294#20339#20045
15K → 20K37039+331#20045#19714
20K → Half3828+10#19714#19704
Half → 25K23127+204#19704#19500
25K → 30K29760+237#19500#19263
30K → 20M18817+171#19263#19092
20M → 21M11334+79#19092#19013
21M → 35K4635+11#19013#19002
35K → 23M67106-39#19002#19041
23M → 24M8922+67#19041#18974
24M → 40K7133+38#18974#18936
40K → 25.2M3721+16#18936#18920
25.2M → Finish2288-66#18920#18986
TOTALS2541734+1807
📊

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