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BOSTON MARATHON 2023

Young Joon Son

Bib: 23176•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
9:33/mi
29:40
↑ 97↓ 3451.5%
10K· 6.21 mi
9:42/mi
59:49
↑ 79↓ 1380.4%
15K· 9.32 mi
10:06/mi
1:31:13
↑ 67↓ 78
20K· 12.43 mi
10:27/mi
2:03:40
↑ 106↓ 860.1%
Half· 13.11 mi
9:54/mi
2:10:25
↑ 19↓ 370.5%
25K· 15.53 mi
11:51/mi
2:39:08
↑ 66↓ 880.2%
30K· 18.64 mi
15:18/mi
3:26:40
↑ 181↓ 1480.2%
20M
12:54/mi
3:44:12
↑ 64↓ 500.2%
21M
15:12/mi
3:59:24
↑ 106↓ 241.6%
35K· 21.75 mi
12:54/mi
4:09:03
↑ 17↓ 861.7%
23M
13:23/mi
4:25:48
↑ 23↓ 630.6%
24M
12:49/mi
4:38:37
↓ 821.3%
40K· 24.85 mi
12:22/mi
4:49:11
↓ 200.3%
25.2M
13:58/mi
4:54:00
↑ 13↓ 160.2%
Finish· 26.22 mi
10:43/mi
5:04:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:25
Pace9:57 /mi
2nd Half
Distance13.11 mi
Time2:54:30
Pace13:19 /mi
📊Positive Split: 33.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:3129:409:3329:40
9:33
-
10K
6.21 mi11:56:4059:499:3830:09
9:42
+0:09
15K
9.32 mi12:28:041:31:139:4731:24
10:06
+0:24
20K
12.43 mi13:00:312:03:409:5732:27
10:27
+0:21
Half
13.11 mi13:07:162:10:259:576:45
9:54
-0:33
25K
15.53 mi13:35:592:39:0810:1528:43
11:51
+1:57
30K
18.64 mi14:23:313:26:4011:0547:32
15:18
+3:27
20M
20.00 mi14:41:033:44:1211:1317:32
12:54
-2:24
21M
21.00 mi14:56:153:59:2411:2415:12
15:12
+2:18
35K
21.75 mi15:05:544:09:0311:279:39
12:54
-2:18
23M
23.00 mi15:22:394:25:4811:3316:45
13:23
+0:29
24M
24.00 mi15:35:284:38:3711:3712:49
12:49
-0:34
40K
24.85 mi15:46:024:49:1111:3810:34
12:22
-0:27
25.2M
25.20 mi15:50:514:54:0011:404:49
13:58
+1:36
Finish
26.22 mi16:01:465:04:5511:3810:55
10:43
-3:15

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

9:33 /mi

Average Pace

11:38 /mi

Slowest Pace

15:18 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:21:20

46% of race

Time at Steady Pace

1:19:17

26% of race

Time at Slower Pace

1:24:18

28% of race

Average Pace: 11:38 /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 mi11:26:3129:409:3329:40
9:33
#22235
10K
6.21 mi11:56:4059:499:3830:09
9:42
#22679
15K
9.32 mi12:28:041:31:139:4731:24
10:06
#23116
20K
12.43 mi13:00:312:03:409:5732:27
10:27
#23325
Half
13.11 mi13:07:162:10:259:576:45
9:54
#23308
25K
15.53 mi13:35:592:39:0810:1528:43
11:51
#23677
30K
18.64 mi14:23:313:26:4011:0547:32
15:18
#24816
20M
20.00 mi14:41:033:44:1211:1317:32
12:54
#24846
21M
21.00 mi14:56:153:59:2411:2415:12
15:12
#24972
35K
21.75 mi15:05:544:09:0311:279:39
12:54
#25012
23M
23.00 mi15:22:394:25:4811:3316:45
13:23
#25058
24M
24.00 mi15:35:284:38:3711:3712:49
12:49
#25092
40K
24.85 mi15:46:024:49:1111:3810:34
12:22
#25080
25.2M
25.20 mi15:50:514:54:0011:404:49
13:58
#25080
Finish
26.22 mi16:01:465:04:5511:3810:55
10:43
#25037
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi22235132211322123710(Top 89%)13958(Top 92%)13958(Top 2542%)
10K6.21 mi3.10 mi22679-44413472-25113472-25123063(Top 87%)13677(Top 90%)13677(Top 2491%)
15K9.32 mi3.11 mi23116-43713683-21113683-21123710(Top 89%)13958(Top 92%)13958(Top 2542%)
20K12.43 mi3.11 mi23325-20913786-10313786-10323742(Top 89%)13952(Top 92%)13952(Top 2541%)
Half13.11 mi0.68 mi23308+1713775+1113775+1123072(Top 87%)13665(Top 90%)13665(Top 2489%)
25K15.53 mi2.42 mi23677-36913934-15913934-15925021(Top 94%)14474(Top 95%)14474(Top 2636%)
30K18.64 mi3.11 mi24816-113914414-48014414-48026495(Top 100%)15115(Top 100%)15115(Top 2753%)
20M20.00 mi1.36 mi24846-3014412+214412+225090(Top 94%)14419(Top 95%)14419(Top 2626%)
21M21.00 mi1.00 mi24972-12614457-4514457-4525839(Top 97%)14793(Top 97%)14793(Top 2695%)
35K21.75 mi0.75 mi25012-4014468-1114468-1125484(Top 96%)14564(Top 96%)14564(Top 2653%)
23M23.00 mi1.25 mi25058-4614482-1414482-1425422(Top 95%)14544(Top 96%)14544(Top 2649%)
24M24.00 mi1.00 mi25092-3414493-1114493-1125343(Top 95%)14474(Top 95%)14474(Top 2636%)
40K24.85 mi0.85 mi25080+1214482+1114482+1124292(Top 91%)13941(Top 92%)13941(Top 2539%)
25.2M25.20 mi0.35 mi2508014479+314479+324977(Top 94%)14271(Top 94%)14271(Top 2599%)
Finish26.22 mi1.02 mi25037+4314458+2114458+2123442(Top 88%)13550(Top 89%)13550(Top 2468%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

23710

Males

13958

M65-69

13958

5K→10K

3.1 - 6.2 mi

Top 87%
×5story building
+79ft-138ft

Overall

23063

Males

13677

M65-69

13677

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

23710

Males

13958

M65-69

13958

15K→20K

9.3 - 12.4 mi

Top 89%
×5story building
+106ft-86ft

Overall

23742

Males

13952

M65-69

13952

20K→Half

12.4 - 13.1 mi

Top 87%
×2story building
+19ft-37ft

Overall

23072

Males

13665

M65-69

13665

Half→25K

13.1 - 15.5 mi

Top 94%
×4story building
+66ft-88ft

Overall

25021

Males

14474

M65-69

14474

25K→30K

15.5 - 18.6 mi

Top 100%
×9story building
+181ft-148ft

Overall

26495

Males

15115

M65-69

15115

30K→20M

18.6 - 20.0 mi

Top 94%
×5story building
+64ft-50ft

Overall

25090

Males

14419

M65-69

14419

20M→21M

20.0 - 21.0 mi

Top 97%
×8story building
+106ft-24ft

Overall

25839

Males

14793

M65-69

14793

21M→35K

21.0 - 21.8 mi

Top 96%
×7story building
+17ft-86ft

Overall

25484

Males

14564

M65-69

14564

35K→23M

21.8 - 23.0 mi

Top 95%
×5story building
+23ft-63ft

Overall

25422

Males

14544

M65-69

14544

23M→24M

23.0 - 24.0 mi

Top 95%
×6story building
+12ft-82ft

Overall

25343

Males

14474

M65-69

14474

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

24292

Males

13941

M65-69

13941

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

24977

Males

14271

M65-69

14271

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

23442

Males

13550

M65-69

13550

Passing Analysis

Category:
Athletes Passed
391
Passed By
3193
Net Change
-2802
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22235
5K → 10K85529-444#22235#22679
10K → 15K38475-437#22679#23116
15K → 20K63272-209#23116#23325
20K → Half269+17#23325#23308
Half → 25K16385-369#23308#23677
25K → 30K41143-1139#23677#24816
30K → 20M3464-30#24816#24846
20M → 21M7133-126#24846#24972
21M → 35K1555-40#24972#25012
35K → 23M1460-46#25012#25058
23M → 24M1044-34#25058#25092
24M → 40K2311+12#25092#25080
40K → 25.2M11110#25080#25080
25.2M → Finish452+43#25080#25037
TOTALS3913193-2802
📊

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