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BOSTON MARATHON 2023

Dr. Ou Li

Bib: 20589•M

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
Top 33%
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
8:10/mi
25:23
↑ 97↓ 3451.5%
10K· 6.21 mi
8:16/mi
51:04
↑ 79↓ 1380.4%
15K· 9.32 mi
8:20/mi
1:16:58
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:43:26
↑ 106↓ 860.1%
Half· 13.11 mi
8:27/mi
1:49:12
↑ 19↓ 370.5%
25K· 15.53 mi
8:37/mi
2:10:05
↑ 66↓ 880.2%
30K· 18.64 mi
9:09/mi
2:38:30
↑ 181↓ 1480.2%
20M
9:30/mi
2:51:24
↑ 64↓ 500.2%
21M
10:25/mi
3:01:49
↑ 106↓ 241.6%
35K· 21.75 mi
9:35/mi
3:08:59
↑ 17↓ 861.7%
23M
10:00/mi
3:21:30
↑ 23↓ 630.6%
24M
9:23/mi
3:30:53
↓ 821.3%
40K· 24.85 mi
10:01/mi
3:39:27
↓ 200.3%
25.2M
10:58/mi
3:43:14
↑ 13↓ 160.2%
Finish· 26.22 mi
10:13/mi
3:53:39
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:49:12
Pace8:20 /mi
2nd Half
Distance13.11 mi
Time2:04:27
Pace9:30 /mi
📊Positive Split: 14.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:3225:238:1025:23
8:10
-
10K
6.21 mi11:43:1351:048:1325:41
8:16
+0:06
15K
9.32 mi12:09:071:16:588:1525:54
8:20
+0:04
20K
12.43 mi12:35:351:43:268:1926:28
8:31
+0:11
Half
13.11 mi12:41:211:49:128:205:46
8:27
-0:04
25K
15.53 mi13:02:142:10:058:2220:53
8:37
+0:10
30K
18.64 mi13:30:392:38:308:3028:25
9:09
+0:32
20M
20.00 mi13:43:332:51:248:3412:54
9:30
+0:21
21M
21.00 mi13:53:583:01:498:3910:25
10:25
+0:55
35K
21.75 mi14:01:083:08:598:417:10
9:35
-0:50
23M
23.00 mi14:13:393:21:308:4612:31
10:00
+0:25
24M
24.00 mi14:23:023:30:538:479:23
9:23
-0:37
40K
24.85 mi14:31:363:39:278:508:34
10:01
+0:38
25.2M
25.20 mi14:35:233:43:148:523:47
10:58
+0:57
Finish
26.22 mi14:45:483:53:398:5510:25
10:13
-0:45

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

8:10 /mi

Average Pace

8:55 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:05

56% of race

Time at Steady Pace

57:52

25% of race

Time at Slower Pace

45:42

20% of race

Average Pace: 8:55 /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 mi11:17:3225:238:1025:23
8:10
#15224
10K
6.21 mi11:43:1351:048:1325:41
8:16
#15947
15K
9.32 mi12:09:071:16:588:1525:54
8:20
#16229
20K
12.43 mi12:35:351:43:268:1926:28
8:31
#16443
Half
13.11 mi12:41:211:49:128:205:46
8:27
#16495
25K
15.53 mi13:02:142:10:058:2220:53
8:37
#16565
30K
18.64 mi13:30:392:38:308:3028:25
9:09
#16797
20M
20.00 mi13:43:332:51:248:3412:54
9:30
#16945
21M
21.00 mi13:53:583:01:498:3910:25
10:25
#17142
35K
21.75 mi14:01:083:08:598:417:10
9:35
#17276
23M
23.00 mi14:13:393:21:308:4612:31
10:00
#17514
24M
24.00 mi14:23:023:30:538:479:23
9:23
#17625
40K
24.85 mi14:31:363:39:278:508:34
10:01
#17786
25.2M
25.20 mi14:35:233:43:148:523:47
10:58
#17854
Finish
26.22 mi14:45:483:53:398:5510:25
10:13
#18117
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi3.11 mi15224104201042016764(Top 63%)10976(Top 72%)10976(Top 1999%)
10K6.21 mi3.10 mi15947-72310675-25510675-25516691(Top 63%)10987(Top 72%)10987(Top 2001%)
15K9.32 mi3.11 mi16229-28210783-10810783-10816764(Top 63%)10976(Top 72%)10976(Top 1999%)
20K12.43 mi3.11 mi16443-21410855-7210855-7216974(Top 64%)11043(Top 73%)11043(Top 2011%)
Half13.11 mi0.68 mi16495-5210862-710862-717433(Top 65%)11267(Top 74%)11267(Top 2052%)
25K15.53 mi2.42 mi16565-7010870-810870-816874(Top 63%)10918(Top 72%)10918(Top 1989%)
30K18.64 mi3.11 mi16797-23210933-6310933-6317901(Top 67%)11290(Top 74%)11290(Top 2056%)
20M20.00 mi1.36 mi16945-14810987-5410987-5418822(Top 71%)11597(Top 76%)11597(Top 2112%)
21M21.00 mi1.00 mi17142-19711047-6011047-6019302(Top 73%)11765(Top 78%)11765(Top 2143%)
35K21.75 mi0.75 mi17276-13411088-4111088-4120068(Top 75%)12069(Top 80%)12069(Top 2198%)
23M23.00 mi1.25 mi17514-23811163-7511163-7519970(Top 75%)12005(Top 79%)12005(Top 2187%)
24M24.00 mi1.00 mi17625-11111193-3011193-3018764(Top 70%)11433(Top 75%)11433(Top 2083%)
40K24.85 mi0.85 mi17786-16111257-6411257-6420000(Top 75%)11914(Top 79%)11914(Top 2170%)
25.2M25.20 mi0.35 mi17854-6811287-3011287-3020354(Top 76%)12081(Top 80%)12081(Top 2201%)
Finish26.22 mi1.02 mi18117-26311377-9011377-9022342(Top 84%)13020(Top 86%)13020(Top 2372%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

16764

Males

10976

M65-69

10976

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

16691

Males

10987

M65-69

10987

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

16764

Males

10976

M65-69

10976

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

16974

Males

11043

M65-69

11043

20K→Half

12.4 - 13.1 mi

Top 65%
×2story building
+19ft-37ft

Overall

17433

Males

11267

M65-69

11267

Half→25K

13.1 - 15.5 mi

Top 63%
×4story building
+66ft-88ft

Overall

16874

Males

10918

M65-69

10918

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

17901

Males

11290

M65-69

11290

30K→20M

18.6 - 20.0 mi

Top 71%
×5story building
+64ft-50ft

Overall

18822

Males

11597

M65-69

11597

20M→21M

20.0 - 21.0 mi

Top 73%
×8story building
+106ft-24ft

Overall

19302

Males

11765

M65-69

11765

21M→35K

21.0 - 21.8 mi

Top 75%
×7story building
+17ft-86ft

Overall

20068

Males

12069

M65-69

12069

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

19970

Males

12005

M65-69

12005

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18764

Males

11433

M65-69

11433

24M→40K

24.0 - 24.9 mi

Top 75%
×1story
+6ft-20ft

Overall

20000

Males

11914

M65-69

11914

40K→25.2M

24.9 - 25.2 mi

Top 76%
×1story
+13ft-16ft

Overall

20354

Males

12081

M65-69

12081

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

22342

Males

13020

M65-69

13020

Passing Analysis

Category:
Athletes Passed
717
Passed By
3610
Net Change
-2893
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15224
5K → 10K89812-723#15224#15947
10K → 15K99381-282#15947#16229
15K → 20K93307-214#16229#16443
20K → Half1971-52#16443#16495
Half → 25K110180-70#16495#16565
25K → 30K110342-232#16565#16797
30K → 20M38186-148#16797#16945
20M → 21M38235-197#16945#17142
21M → 35K17151-134#17142#17276
35K → 23M37275-238#17276#17514
23M → 24M32143-111#17514#17625
24M → 40K18179-161#17625#17786
40K → 25.2M1078-68#17786#17854
25.2M → Finish7270-263#17854#18117
TOTALS7173610-2893
📊

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