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BOSTON MARATHON 2023

Shih-Ming Shih

Bib: 23468•M

CA

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
9:31/mi
29:33
↑ 97↓ 3451.5%
10K· 6.21 mi
9:33/mi
59:13
↑ 79↓ 1380.4%
15K· 9.32 mi
9:26/mi
1:28:31
↑ 67↓ 78
20K· 12.43 mi
9:38/mi
1:58:27
↑ 106↓ 860.1%
Half· 13.11 mi
9:11/mi
2:04:43
↑ 19↓ 370.5%
25K· 15.53 mi
9:33/mi
2:27:52
↑ 66↓ 880.2%
30K· 18.64 mi
9:54/mi
2:58:37
↑ 181↓ 1480.2%
20M
9:53/mi
3:12:03
↑ 64↓ 500.2%
21M
10:17/mi
3:22:20
↑ 106↓ 241.6%
35K· 21.75 mi
9:25/mi
3:29:23
↑ 17↓ 861.7%
23M
9:45/mi
3:41:36
↑ 23↓ 630.6%
24M
9:26/mi
3:51:02
↓ 821.3%
40K· 24.85 mi
9:21/mi
3:59:02
↓ 200.3%
25.2M
9:52/mi
4:02:26
↑ 13↓ 160.2%
Finish· 26.22 mi
8:57/mi
4:11:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:43
Pace9:31 /mi
2nd Half
Distance13.11 mi
Time2:06:50
Pace9:41 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:1829:339:3129:33
9:31
-
10K
6.21 mi11:54:5859:139:3229:40
9:33
+0:02
15K
9.32 mi12:24:161:28:319:3029:18
9:26
-0:07
20K
12.43 mi12:54:121:58:279:3229:56
9:38
+0:12
Half
13.11 mi13:00:282:04:439:316:16
9:11
-0:27
25K
15.53 mi13:23:372:27:529:3123:09
9:33
+0:22
30K
18.64 mi13:54:222:58:379:3530:45
9:54
+0:21
20M
20.00 mi14:07:483:12:039:3613:26
9:53
-0:01
21M
21.00 mi14:18:053:22:209:3810:17
10:17
+0:24
35K
21.75 mi14:25:083:29:239:387:03
9:25
-0:52
23M
23.00 mi14:37:213:41:369:3812:13
9:45
+0:20
24M
24.00 mi14:46:473:51:029:389:26
9:26
-0:19
40K
24.85 mi14:54:473:59:029:378:00
9:21
-0:05
25.2M
25.20 mi14:58:114:02:269:373:24
9:52
+0:31
Finish
26.22 mi15:07:184:11:339:369:07
8:57
-0:55

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

8:57 /mi

Average Pace

9:36 /mi

Slowest Pace

10:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:13:41

77% of race

Time at Steady Pace

57:52

23% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:36 /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 mi11:25:1829:339:3129:33
9:31
#22114
10K
6.21 mi11:54:5859:139:3229:40
9:33
#22401
15K
9.32 mi12:24:161:28:319:3029:18
9:26
#22299
20K
12.43 mi12:54:121:58:279:3229:56
9:38
#22214
Half
13.11 mi13:00:282:04:439:316:16
9:11
#22150
25K
15.53 mi13:23:372:27:529:3123:09
9:33
#21947
30K
18.64 mi13:54:222:58:379:3530:45
9:54
#21697
20M
20.00 mi14:07:483:12:039:3613:26
9:53
#21596
21M
21.00 mi14:18:053:22:209:3810:17
10:17
#21454
35K
21.75 mi14:25:083:29:239:387:03
9:25
#21382
23M
23.00 mi14:37:213:41:369:3812:13
9:45
#21237
24M
24.00 mi14:46:473:51:029:389:26
9:26
#21129
40K
24.85 mi14:54:473:59:029:378:00
9:21
#21006
25.2M
25.20 mi14:58:114:02:269:373:24
9:52
#20934
Finish
26.22 mi15:07:184:11:339:369:07
8:57
#20826
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi22114131561315622038(Top 83%)13208(Top 87%)13208(Top 2406%)
10K6.21 mi3.10 mi22401-28713327-17113327-17122643(Top 85%)13453(Top 89%)13453(Top 2450%)
15K9.32 mi3.11 mi22299+10213290+3713290+3722038(Top 83%)13208(Top 87%)13208(Top 2406%)
20K12.43 mi3.11 mi22214+8513246+4413246+4421950(Top 82%)13154(Top 87%)13154(Top 2396%)
Half13.11 mi0.68 mi22150+6413216+3013216+3021091(Top 79%)12770(Top 84%)12770(Top 2326%)
25K15.53 mi2.42 mi21947+20313128+8813128+8820989(Top 79%)12704(Top 84%)12704(Top 2314%)
30K18.64 mi3.11 mi21697+25013009+11913009+11920740(Top 78%)12527(Top 83%)12527(Top 2282%)
20M20.00 mi1.36 mi21596+10112957+5212957+5220131(Top 76%)12172(Top 80%)12172(Top 2217%)
21M21.00 mi1.00 mi21454+14212881+7612881+7618974(Top 71%)11633(Top 77%)11633(Top 2119%)
35K21.75 mi0.75 mi21382+7212837+4412837+4419623(Top 74%)11885(Top 78%)11885(Top 2165%)
23M23.00 mi1.25 mi21237+14512748+8912748+8919283(Top 72%)11693(Top 77%)11693(Top 2130%)
24M24.00 mi1.00 mi21129+10812689+5912689+5918968(Top 71%)11523(Top 76%)11523(Top 2099%)
40K24.85 mi0.85 mi21006+12312626+6312626+6317777(Top 67%)10936(Top 72%)10936(Top 1992%)
25.2M25.20 mi0.35 mi20934+7212591+3512591+3516797(Top 63%)10483(Top 69%)10483(Top 1909%)
Finish26.22 mi1.02 mi20826+10812530+6112530+6117701(Top 66%)10932(Top 72%)10932(Top 1991%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 83%
×21story building
+97ft-345ft

Overall

22038

Males

13208

M65-69

13208

5K→10K

3.1 - 6.2 mi

Top 85%
×5story building
+79ft-138ft

Overall

22643

Males

13453

M65-69

13453

10K→15K

6.2 - 9.3 mi

Top 83%
×3story building
+67ft-78ft

Overall

22038

Males

13208

M65-69

13208

15K→20K

9.3 - 12.4 mi

Top 82%
×5story building
+106ft-86ft

Overall

21950

Males

13154

M65-69

13154

20K→Half

12.4 - 13.1 mi

Top 79%
×2story building
+19ft-37ft

Overall

21091

Males

12770

M65-69

12770

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

20989

Males

12704

M65-69

12704

25K→30K

15.5 - 18.6 mi

Top 78%
×9story building
+181ft-148ft

Overall

20740

Males

12527

M65-69

12527

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

20131

Males

12172

M65-69

12172

20M→21M

20.0 - 21.0 mi

Top 71%
×8story building
+106ft-24ft

Overall

18974

Males

11633

M65-69

11633

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19623

Males

11885

M65-69

11885

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

19283

Males

11693

M65-69

11693

23M→24M

23.0 - 24.0 mi

Top 71%
×6story building
+12ft-82ft

Overall

18968

Males

11523

M65-69

11523

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17777

Males

10936

M65-69

10936

40K→25.2M

24.9 - 25.2 mi

Top 63%
×1story
+13ft-16ft

Overall

16797

Males

10483

M65-69

10483

25.2M→Finish

25.2 - 26.2 mi

Top 66%
×2story building
+22ft-21ft

Overall

17701

Males

10932

M65-69

10932

Passing Analysis

Category:
Athletes Passed
1998
Passed By
710
Net Change
+1288
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22114
5K → 10K124411-287#22114#22401
10K → 15K212110+102#22401#22299
15K → 20K17792+85#22299#22214
20K → Half684+64#22214#22150
Half → 25K21310+203#22150#21947
25K → 30K28838+250#21947#21697
30K → 20M11110+101#21697#21596
20M → 21M1497+142#21596#21454
21M → 35K764+72#21454#21382
35K → 23M15611+145#21382#21237
23M → 24M1113+108#21237#21129
24M → 40K1252+123#21129#21006
40K → 25.2M731+72#21006#20934
25.2M → Finish1157+108#20934#20826
TOTALS1998710+1288
📊

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