Dahai Li

Bib: 10266M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 45%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 48%
Division (M55-59)
#0 / 1648
Top 35%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:45
Rank: #10575
Start5K
7:19/mi
22:45 split
10K· 6.21 mi
45:30
Rank: #10528 (+47)
5K10K
7:19/mi
22:45 split
15K· 9.32 mi
1:08:46
Rank: #10868 (-340)
10K15K
7:29/mi
23:16 split
20K· 12.43 mi
1:32:14
Rank: #10949 (-81)
15K20K
7:33/mi
23:28 split
Half· 13.11 mi
1:37:37
Rank: #11196 (-247)
20KHalf
7:53/mi
5:23 split
25K· 15.53 mi
1:56:00
Rank: #11046 (+150)
Half25K
7:35/mi
18:23 split
30K· 18.64 mi
2:21:08
Rank: #11210 (-164)
25K30K
8:05/mi
25:08 split
20M
2:33:45
Rank: #11790 (-580)
30K20M
9:17/mi
12:37 split
21M
2:43:35
Rank: #12217 (-427)
20M21M
9:50/mi
9:50 split
35K· 21.75 mi
2:50:03
Rank: #12372 (-155)
21M35K
8:39/mi
6:28 split
23M
3:00:48
Rank: #12446 (-74)
35K23M
8:35/mi
10:45 split
24M
3:09:06
Rank: #12472 (-26)
23M24M
8:18/mi
8:18 split
40K· 24.85 mi
3:16:31
Rank: #12536 (-64)
24M40K
8:40/mi
7:25 split
25.2M
3:19:54
Rank: #12617 (-81)
40K25.2M
9:49/mi
3:23 split
Finish· 26.22 mi
3:28:32
Rank: #12761 (-144)
25.2MFinish
8:28/mi
8:38 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:37
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:50:55
Pace8:28 /mi
📊Positive Split: 13.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:0822:457:1922:45
7:19
-
10K
6.21 mi11:13:5345:307:1922:45
7:19
0:00
15K
9.32 mi11:37:091:08:467:2323:16
7:29
+0:10
20K
12.43 mi12:00:371:32:147:2523:28
7:33
+0:04
Half
13.11 mi12:06:001:37:377:275:23
7:53
+0:20
25K
15.53 mi12:24:231:56:007:2818:23
7:35
-0:18
30K
18.64 mi12:49:312:21:087:3425:08
8:05
+0:30
20M
20.00 mi13:02:082:33:457:4112:37
9:17
+1:12
21M
21.00 mi13:11:582:43:357:479:50
9:50
+0:33
35K
21.75 mi13:18:262:50:037:496:28
8:39
-1:11
23M
23.00 mi13:29:113:00:487:5210:45
8:35
-0:04
24M
24.00 mi13:37:293:09:067:538:18
8:18
-0:17
40K
24.85 mi13:44:543:16:317:547:25
8:40
+0:22
25.2M
25.20 mi13:48:173:19:547:563:23
9:49
+1:09
Finish
26.22 mi13:56:553:28:327:588:38
8:28
-1:21

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

7:19 /mi

Average Pace

7:58 /mi

Slowest Pace

9:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:00

56% of race

Time at Steady Pace

1:06:42

32% of race

Time at Slower Pace

25:50

12% of race

Average Pace: 7:57 /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 mi10:51:0822:457:1922:45
7:19
#10575
10K
6.21 mi11:13:5345:307:1922:45
7:19
#10528
15K
9.32 mi11:37:091:08:467:2323:16
7:29
#10868
20K
12.43 mi12:00:371:32:147:2523:28
7:33
#10949
Half
13.11 mi12:06:001:37:377:275:23
7:53
#11196
25K
15.53 mi12:24:231:56:007:2818:23
7:35
#11046
30K
18.64 mi12:49:312:21:087:3425:08
8:05
#11210
20M
20.00 mi13:02:082:33:457:4112:37
9:17
#11790
21M
21.00 mi13:11:582:43:357:479:50
9:50
#12217
35K
21.75 mi13:18:262:50:037:496:28
8:39
#12372
23M
23.00 mi13:29:113:00:487:5210:45
8:35
#12446
24M
24.00 mi13:37:293:09:067:538:18
8:18
#12472
40K
24.85 mi13:44:543:16:317:547:25
8:40
#12536
25.2M
25.20 mi13:48:173:19:547:563:23
9:49
#12617
Finish
26.22 mi13:56:553:28:327:588:38
8:28
#12761
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi105758481848111666(Top 41%)8912(Top 55%)8912(Top 541%)
10K6.21 mi3.10 mi10528+478437+448437+4410528(Top 37%)8428(Top 52%)8428(Top 511%)
15K9.32 mi3.11 mi10868-3408584-1478584-14711666(Top 41%)8912(Top 55%)8912(Top 541%)
20K12.43 mi3.11 mi10949-818610-268610-2611189(Top 39%)8584(Top 53%)8584(Top 521%)
Half13.11 mi0.68 mi11196-2478713-1038713-10314922(Top 53%)10285(Top 64%)10285(Top 624%)
25K15.53 mi2.42 mi11046+1508601+1128601+11210605(Top 37%)8207(Top 51%)8207(Top 498%)
30K18.64 mi3.11 mi11210-1648610-98610-912018(Top 42%)8687(Top 54%)8687(Top 527%)
20M20.00 mi1.36 mi11790-5808845-2358845-23518201(Top 64%)11316(Top 70%)11316(Top 687%)
21M21.00 mi1.00 mi12217-4278996-1518996-15117606(Top 62%)10962(Top 68%)10962(Top 665%)
35K21.75 mi0.75 mi12372-1559041-459041-4516278(Top 57%)10287(Top 64%)10287(Top 624%)
23M23.00 mi1.25 mi12446-749039+29039+213823(Top 49%)9078(Top 56%)9078(Top 551%)
24M24.00 mi1.00 mi12472-269032+79032+713242(Top 47%)8767(Top 54%)8767(Top 532%)
40K24.85 mi0.85 mi12536-649033-19033-114440(Top 51%)9189(Top 57%)9189(Top 558%)
25.2M25.20 mi0.35 mi12617-819053-209053-2016070(Top 57%)9895(Top 61%)9895(Top 600%)
Finish26.22 mi1.02 mi12761-1449098-459098-4516002(Top 56%)9934(Top 62%)9934(Top 603%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 41%
×21story building
+97ft-345ft

Overall

11666

Males

8912

M55-59

8912

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

10528

Males

8428

M55-59

8428

10K→15K

6.2 - 9.3 mi

Top 41%
×3story building
+67ft-78ft

Overall

11666

Males

8912

M55-59

8912

15K→20K

9.3 - 12.4 mi

Top 39%
×5story building
+106ft-86ft

Overall

11189

Males

8584

M55-59

8584

20K→Half

12.4 - 13.1 mi

Top 53%
×2story building
+19ft-37ft

Overall

14922

Males

10285

M55-59

10285

Half→25K

13.1 - 15.5 mi

Top 37%
×4story building
+66ft-88ft

Overall

10605

Males

8207

M55-59

8207

25K→30K

15.5 - 18.6 mi

Top 42%
×9story building
+181ft-148ft

Overall

12018

Males

8687

M55-59

8687

30K→20M

18.6 - 20.0 mi

Top 64%
×5story building
+64ft-50ft

Overall

18201

Males

11316

M55-59

11316

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

17606

Males

10962

M55-59

10962

21M→35K

21.0 - 21.8 mi

Top 57%
×7story building
+17ft-86ft

Overall

16278

Males

10287

M55-59

10287

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

13823

Males

9078

M55-59

9078

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

13242

Males

8767

M55-59

8767

24M→40K

24.0 - 24.9 mi

Top 51%
×1story
+6ft-20ft

Overall

14440

Males

9189

M55-59

9189

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

16070

Males

9895

M55-59

9895

25.2M→Finish

25.2 - 26.2 mi

Top 56%
×2story building
+22ft-21ft

Overall

16002

Males

9934

M55-59

9934

Passing Analysis

Category:
Athletes Passed
1278
Passed By
3464
Net Change
-2186
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10575
5K10K283236+47#10575#10528
10K15K82422-340#10528#10868
15K20K147228-81#10868#10949
20KHalf4251-247#10949#11196
Half25K23080+150#11196#11046
25K30K169333-164#11046#11210
30K20M31611-580#11210#11790
20M21M39466-427#11790#12217
21M35K30185-155#12217#12372
35K23M91165-74#12372#12446
23M24M6894-26#12446#12472
24M40K54118-64#12472#12536
40K25.2M1798-81#12536#12617
25.2MFinish33177-144#12617#12761
TOTALS12783464-2186
📊

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