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BOSTON MARATHON 2023

Wonchul Choi

Bib: 17288•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M65-69)
#0 / 549
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
8:40/mi
26:56
↑ 97↓ 3451.5%
10K· 6.21 mi
8:56/mi
54:41
↑ 79↓ 1380.4%
15K· 9.32 mi
9:02/mi
1:22:46
↑ 67↓ 78
20K· 12.43 mi
9:12/mi
1:51:21
↑ 106↓ 860.1%
Half· 13.11 mi
9:14/mi
1:57:39
↑ 19↓ 370.5%
25K· 15.53 mi
9:35/mi
2:20:54
↑ 66↓ 880.2%
30K· 18.64 mi
10:00/mi
2:51:57
↑ 181↓ 1480.2%
20M
10:11/mi
3:05:47
↑ 64↓ 500.2%
21M
11:19/mi
3:17:06
↑ 106↓ 241.6%
35K· 21.75 mi
10:19/mi
3:24:49
↑ 17↓ 861.7%
23M
10:38/mi
3:38:08
↑ 23↓ 630.6%
24M
10:29/mi
3:48:37
↓ 821.3%
40K· 24.85 mi
10:42/mi
3:57:46
↓ 200.3%
25.2M
11:36/mi
4:01:46
↑ 13↓ 160.2%
Finish· 26.22 mi
10:27/mi
4:12:25
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:39
Pace8:58 /mi
2nd Half
Distance13.11 mi
Time2:14:46
Pace10:17 /mi
📊Positive Split: 14.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4226:568:4026:56
8:40
-
10K
6.21 mi11:45:2754:418:4827:45
8:56
+0:16
15K
9.32 mi12:13:321:22:468:5328:05
9:02
+0:06
20K
12.43 mi12:42:071:51:218:5828:35
9:12
+0:10
Half
13.11 mi12:48:251:57:398:586:18
9:14
+0:02
25K
15.53 mi13:11:402:20:549:0423:15
9:35
+0:21
30K
18.64 mi13:42:432:51:579:1331:03
10:00
+0:25
20M
20.00 mi13:56:333:05:479:1713:50
10:11
+0:11
21M
21.00 mi14:07:523:17:069:2311:19
11:19
+1:08
35K
21.75 mi14:15:353:24:499:257:43
10:19
-1:00
23M
23.00 mi14:28:543:38:089:2913:19
10:38
+0:19
24M
24.00 mi14:39:233:48:379:3210:29
10:29
-0:09
40K
24.85 mi14:48:323:57:469:349:09
10:42
+0:13
25.2M
25.20 mi14:52:324:01:469:364:00
11:36
+0:54
Finish
26.22 mi15:03:114:12:259:3810:39
10:27
-1:09

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

8:40 /mi

Average Pace

9:38 /mi

Slowest Pace

11:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:20:54

56% of race

Time at Steady Pace

1:13:44

29% of race

Time at Slower Pace

37:47

15% of race

Average Pace: 9:38 /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 mi11:17:4226:568:4026:56
8:40
#18679
10K
6.21 mi11:45:2754:418:4827:45
8:56
#19678
15K
9.32 mi12:13:321:22:468:5328:05
9:02
#20035
20K
12.43 mi12:42:071:51:218:5828:35
9:12
#20152
Half
13.11 mi12:48:251:57:398:586:18
9:14
#20239
25K
15.53 mi13:11:402:20:549:0423:15
9:35
#20435
30K
18.64 mi13:42:432:51:579:1331:03
10:00
#20542
20M
20.00 mi13:56:333:05:479:1713:50
10:11
#20579
21M
21.00 mi14:07:523:17:069:2311:19
11:19
#20633
35K
21.75 mi14:15:353:24:499:257:43
10:19
#20688
23M
23.00 mi14:28:543:38:089:2913:19
10:38
#20751
24M
24.00 mi14:39:233:48:379:3210:29
10:29
#20802
40K
24.85 mi14:48:323:57:469:349:09
10:42
#20835
25.2M
25.20 mi14:52:324:01:469:364:00
11:36
#20852
Finish
26.22 mi15:03:114:12:259:3810:39
10:27
#20936
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi18679116721167220669(Top 78%)12601(Top 83%)12601(Top 2295%)
10K6.21 mi3.10 mi19678-99912085-41312085-41320584(Top 77%)12538(Top 83%)12538(Top 2284%)
15K9.32 mi3.11 mi20035-35712254-16912254-16920669(Top 78%)12601(Top 83%)12601(Top 2295%)
20K12.43 mi3.11 mi20152-11712331-7712331-7720569(Top 77%)12558(Top 83%)12558(Top 2287%)
Half13.11 mi0.68 mi20239-8712368-3712368-3721249(Top 80%)12842(Top 85%)12842(Top 2339%)
25K15.53 mi2.42 mi20435-19612465-9712465-9721107(Top 79%)12758(Top 84%)12758(Top 2324%)
30K18.64 mi3.11 mi20542-10712491-2612491-2621012(Top 79%)12640(Top 83%)12640(Top 2302%)
20M20.00 mi1.36 mi20579-3712495-412495-420950(Top 79%)12544(Top 83%)12544(Top 2285%)
21M21.00 mi1.00 mi20633-5412512-1712512-1721507(Top 81%)12744(Top 84%)12744(Top 2321%)
35K21.75 mi0.75 mi20688-5512531-1912531-1922012(Top 83%)12928(Top 85%)12928(Top 2355%)
23M23.00 mi1.25 mi20751-6312534-312534-321624(Top 81%)12740(Top 84%)12740(Top 2321%)
24M24.00 mi1.00 mi20802-5112550-1612550-1621994(Top 83%)12875(Top 85%)12875(Top 2345%)
40K24.85 mi0.85 mi20835-33125501255021700(Top 82%)12689(Top 84%)12689(Top 2311%)
25.2M25.20 mi0.35 mi20852-1712552-212552-221735(Top 82%)12729(Top 84%)12729(Top 2319%)
Finish26.22 mi1.02 mi20936-8412579-2712579-2722896(Top 86%)13272(Top 87%)13272(Top 2417%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

20669

Males

12601

M65-69

12601

5K→10K

3.1 - 6.2 mi

Top 77%
×5story building
+79ft-138ft

Overall

20584

Males

12538

M65-69

12538

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

20669

Males

12601

M65-69

12601

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

20569

Males

12558

M65-69

12558

20K→Half

12.4 - 13.1 mi

Top 80%
×2story building
+19ft-37ft

Overall

21249

Males

12842

M65-69

12842

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

21107

Males

12758

M65-69

12758

25K→30K

15.5 - 18.6 mi

Top 79%
×9story building
+181ft-148ft

Overall

21012

Males

12640

M65-69

12640

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

20950

Males

12544

M65-69

12544

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

21507

Males

12744

M65-69

12744

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

22012

Males

12928

M65-69

12928

35K→23M

21.8 - 23.0 mi

Top 81%
×5story building
+23ft-63ft

Overall

21624

Males

12740

M65-69

12740

23M→24M

23.0 - 24.0 mi

Top 83%
×6story building
+12ft-82ft

Overall

21994

Males

12875

M65-69

12875

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21700

Males

12689

M65-69

12689

40K→25.2M

24.9 - 25.2 mi

Top 82%
×1story
+13ft-16ft

Overall

21735

Males

12729

M65-69

12729

25.2M→Finish

25.2 - 26.2 mi

Top 86%
×2story building
+22ft-21ft

Overall

22896

Males

13272

M65-69

13272

Passing Analysis

Category:
Athletes Passed
724
Passed By
2981
Net Change
-2257
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18679
5K → 10K661065-999#18679#19678
10K → 15K64421-357#19678#20035
15K → 20K128245-117#20035#20152
20K → Half996-87#20152#20239
Half → 25K57253-196#20239#20435
25K → 30K116223-107#20435#20542
30K → 20M5996-37#20542#20579
20M → 21M58112-54#20579#20633
21M → 35K2984-55#20633#20688
35K → 23M50113-63#20688#20751
23M → 24M2980-51#20751#20802
24M → 40K2558-33#20802#20835
40K → 25.2M825-17#20835#20852
25.2M → Finish26110-84#20852#20936
TOTALS7242981-2257
📊

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