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BOSTON MARATHON 2023

Terry Ng

Bib: 6311•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 18%
Gender (Male)
#0 / 15176
Top 29%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:12
Rank: #4896
Start → 5K
21:12 | 6:49/mi
10K· 6.21 mi
42:24
Rank: #5154 (-258)
5K → 10K
21:12 | 6:49/mi
15K· 9.32 mi
1:03:15
Rank: #4862 (+292)
10K → 15K
20:51 | 6:43/mi
20K· 12.43 mi
1:24:30
Rank: #4843 (+19)
15K → 20K
21:15 | 6:50/mi
Half· 13.11 mi
1:29:09
Rank: #4868 (-25)
20K → Half
4:39 | 6:49/mi
25K· 15.53 mi
1:46:03
Rank: #4958 (-90)
Half → 25K
16:54 | 6:58/mi
30K· 18.64 mi
2:08:50
Rank: #5262 (-304)
25K → 30K
22:47 | 7:20/mi
20M
2:18:49
Rank: #5293 (-31)
30K → 20M
9:59 | 7:21/mi
21M
2:26:44
Rank: #5334 (-41)
20M → 21M
7:55 | 7:55/mi
35K· 21.75 mi
2:31:50
Rank: #5271 (+63)
21M → 35K
5:06 | 6:49/mi
23M
2:40:47
Rank: #5168 (+103)
35K → 23M
8:57 | 7:09/mi
24M
2:47:36
Rank: #5055 (+113)
23M → 24M
6:49 | 6:49/mi
40K· 24.85 mi
2:53:32
Rank: #4965 (+90)
24M → 40K
5:56 | 6:56/mi
25.2M
2:56:07
Rank: #4935 (+30)
40K → 25.2M
2:35 | 7:29/mi
Finish· 26.22 mi
3:02:58
Rank: #4827 (+108)
25.2M → Finish
6:51 | 6:43/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:29:09
Pace6:48 /mi
2nd Half
Distance13.11 mi
Time1:33:49
Pace7:09 /mi
📊Positive Split: 5.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:2921:126:4921:12
6:49
-
10K
6.21 mi10:45:4142:246:4921:12
6:49
0:00
15K
9.32 mi11:06:321:03:156:4720:51
6:43
-0:06
20K
12.43 mi11:27:471:24:306:4821:15
6:50
+0:07
Half
13.11 mi11:32:261:29:096:484:39
6:49
-0:01
25K
15.53 mi11:49:201:46:036:5016:54
6:58
+0:09
30K
18.64 mi12:12:072:08:506:5522:47
7:20
+0:22
20M
20.00 mi12:22:062:18:496:569:59
7:21
+0:01
21M
21.00 mi12:30:012:26:446:597:55
7:55
+0:34
35K
21.75 mi12:35:072:31:506:595:06
6:49
-1:06
23M
23.00 mi12:44:042:40:476:598:57
7:09
+0:20
24M
24.00 mi12:50:532:47:366:596:49
6:49
-0:20
40K
24.85 mi12:56:492:53:326:595:56
6:56
+0:07
25.2M
25.20 mi12:59:242:56:076:592:35
7:29
+0:33
Finish
26.22 mi13:06:153:02:586:596:51
6:43
-0:46

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

6:43 /mi

Average Pace

6:59 /mi

Slowest Pace

7:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:52:28

94% of race

Time at Steady Pace

10:30

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:59 /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 mi10:24:2921:126:4921:12
6:49
#4896
10K
6.21 mi10:45:4142:246:4921:12
6:49
#5154
15K
9.32 mi11:06:321:03:156:4720:51
6:43
#4862
20K
12.43 mi11:27:471:24:306:4821:15
6:50
#4843
Half
13.11 mi11:32:261:29:096:484:39
6:49
#4868
25K
15.53 mi11:49:201:46:036:5016:54
6:58
#4958
30K
18.64 mi12:12:072:08:506:5522:47
7:20
#5262
20M
20.00 mi12:22:062:18:496:569:59
7:21
#5293
21M
21.00 mi12:30:012:26:446:597:55
7:55
#5334
35K
21.75 mi12:35:072:31:506:595:06
6:49
#5271
23M
23.00 mi12:44:042:40:476:598:57
7:09
#5168
24M
24.00 mi12:50:532:47:366:596:49
6:49
#5055
40K
24.85 mi12:56:492:53:326:595:56
6:56
#4965
25.2M
25.20 mi12:59:242:56:076:592:35
7:29
#4935
Finish
26.22 mi13:06:153:02:586:596:51
6:43
#4827
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4896455145514243(Top 16%)3980(Top 26%)3980(Top 75%)
10K6.21 mi3.10 mi5154-2584774-2234774-2235528(Top 21%)5088(Top 34%)5088(Top 96%)
15K9.32 mi3.11 mi4862+2924524+2504524+2504243(Top 16%)3980(Top 26%)3980(Top 75%)
20K12.43 mi3.11 mi4843+194510+144510+144814(Top 18%)4472(Top 29%)4472(Top 85%)
Half13.11 mi0.68 mi4868-254533-234533-235352(Top 20%)4935(Top 33%)4935(Top 93%)
25K15.53 mi2.42 mi4958-904609-764609-765396(Top 20%)4971(Top 33%)4971(Top 94%)
30K18.64 mi3.11 mi5262-3044864-2554864-2556208(Top 23%)5516(Top 36%)5516(Top 104%)
20M20.00 mi1.36 mi5293-314887-234887-235867(Top 22%)5186(Top 34%)5186(Top 98%)
21M21.00 mi1.00 mi5334-414910-234910-236791(Top 26%)5725(Top 38%)5725(Top 108%)
35K21.75 mi0.75 mi5271+634850+604850+604313(Top 16%)3948(Top 26%)3948(Top 75%)
23M23.00 mi1.25 mi5168+1034750+1004750+1004548(Top 17%)4120(Top 27%)4120(Top 78%)
24M24.00 mi1.00 mi5055+1134649+1014649+1013758(Top 14%)3444(Top 23%)3444(Top 65%)
40K24.85 mi0.85 mi4965+904574+754574+753553(Top 13%)3232(Top 21%)3232(Top 61%)
25.2M25.20 mi0.35 mi4935+304544+304544+303871(Top 15%)3461(Top 23%)3461(Top 65%)
Finish26.22 mi1.02 mi4827+1084452+924452+923639(Top 14%)3253(Top 21%)3253(Top 62%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4243

Males

3980

M18-39

3980

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5528

Males

5088

M18-39

5088

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4243

Males

3980

M18-39

3980

15K→20K

9.3 - 12.4 mi

Top 18%
×5stories
+106ft-86ft

Overall

4814

Males

4472

M18-39

4472

20K→Half

12.4 - 13.1 mi

Top 20%
×2stories
+19ft-37ft

Overall

5352

Males

4935

M18-39

4935

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5396

Males

4971

M18-39

4971

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6208

Males

5516

M18-39

5516

30K→20M

18.6 - 20.0 mi

Top 22%
×5stories
+64ft-50ft

Overall

5867

Males

5186

M18-39

5186

20M→21M

20.0 - 21.0 mi

Top 26%
×8stories
+106ft-24ft

Overall

6791

Males

5725

M18-39

5725

21M→35K

21.0 - 21.8 mi

Top 16%
×7stories
+17ft-86ft

Overall

4313

Males

3948

M18-39

3948

35K→23M

21.8 - 23.0 mi

Top 17%
×5stories
+23ft-63ft

Overall

4548

Males

4120

M18-39

4120

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3758

Males

3444

M18-39

3444

24M→40K

24.0 - 24.9 mi

Top 13%
×1story
+6ft-20ft

Overall

3553

Males

3232

M18-39

3232

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

3871

Males

3461

M18-39

3461

25.2M→Finish

25.2 - 26.2 mi

Top 14%
×2stories
+22ft-21ft

Overall

3639

Males

3253

M18-39

3253

Passing Analysis

Category:
Athletes Passed
1333
Passed By
1264
Net Change
+69
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4896
5K → 10K101359-258#4896#5154
10K → 15K31624+292#5154#4862
15K → 20K11192+19#4862#4843
20K → Half2045-25#4843#4868
Half → 25K75165-90#4868#4958
25K → 30K59363-304#4958#5262
30K → 20M5485-31#5262#5293
20M → 21M4182-41#5293#5334
21M → 35K696+63#5334#5271
35K → 23M12219+103#5271#5168
23M → 24M1218+113#5168#5055
24M → 40K933+90#5055#4965
40K → 25.2M388+30#4965#4935
25.2M → Finish1135+108#4935#4827
TOTALS13331264+69
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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