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BOSTON MARATHON 2023

Su-Tang Lo

Bib: 2809•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 18%
Gender (Male)
#0 / 15176
Top 29%
Masters (Masters Men)
#0 / 9891
Top 15%
Division (M40-44)
#0 / 2241
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:34
Rank: #3022
Start → 5K
20:34 | 6:37/mi
10K· 6.21 mi
40:51
Rank: #2970 (+52)
5K → 10K
20:17 | 6:32/mi
15K· 9.32 mi
1:01:19
Rank: #3042 (-72)
10K → 15K
20:28 | 6:35/mi
20K· 12.43 mi
1:22:10
Rank: #3154 (-112)
15K → 20K
20:51 | 6:43/mi
Half· 13.11 mi
1:26:45
Rank: #3218 (-64)
20K → Half
4:35 | 6:43/mi
25K· 15.53 mi
1:43:34
Rank: #3492 (-274)
Half → 25K
16:49 | 6:56/mi
30K· 18.64 mi
2:05:44
Rank: #3806 (-314)
25K → 30K
22:10 | 7:08/mi
20M
2:15:29
Rank: #3910 (-104)
30K → 20M
9:45 | 7:10/mi
21M
2:24:21
Rank: #4533 (-623)
20M → 21M
8:52 | 8:52/mi
35K· 21.75 mi
2:30:22
Rank: #4821 (-288)
21M → 35K
6:01 | 8:03/mi
23M
2:40:17
Rank: #5044 (-223)
35K → 23M
9:55 | 7:55/mi
24M
2:47:11
Rank: #4961 (+83)
23M → 24M
6:54 | 6:54/mi
40K· 24.85 mi
2:53:04
Rank: #4859 (+102)
24M → 40K
5:53 | 6:53/mi
25.2M
2:55:38
Rank: #4825 (+34)
40K → 25.2M
2:34 | 7:27/mi
Finish· 26.22 mi
3:02:56
Rank: #4820 (+5)
25.2M → Finish
7:18 | 7:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:45
Pace6:37 /mi
2nd Half
Distance13.11 mi
Time1:36:11
Pace7:20 /mi
📊Positive Split: 10.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:2420:346:3720:34
6:37
-
10K
6.21 mi10:41:4140:516:3420:17
6:32
-0:05
15K
9.32 mi11:02:091:01:196:3520:28
6:35
+0:03
20K
12.43 mi11:23:001:22:106:3720:51
6:43
+0:08
Half
13.11 mi11:27:351:26:456:374:35
6:43
0:00
25K
15.53 mi11:44:241:43:346:4016:49
6:56
+0:13
30K
18.64 mi12:06:342:05:446:4522:10
7:08
+0:12
20M
20.00 mi12:16:192:15:296:469:45
7:10
+0:02
21M
21.00 mi12:25:112:24:216:528:52
8:52
+1:42
35K
21.75 mi12:31:122:30:226:556:01
8:03
-0:49
23M
23.00 mi12:41:072:40:176:589:55
7:55
-0:08
24M
24.00 mi12:48:012:47:116:586:54
6:54
-1:01
40K
24.85 mi12:53:542:53:046:585:53
6:53
-0:01
25.2M
25.20 mi12:56:282:55:386:582:34
7:27
+0:34
Finish
26.22 mi13:03:463:02:566:597:18
7:10
-0:17

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

6:32 /mi

Average Pace

6:59 /mi

Slowest Pace

8:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:01:19

34% of race

Time at Steady Pace

1:34:15

52% of race

Time at Slower Pace

27:22

15% 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 mi10:21:2420:346:3720:34
6:37
#3022
10K
6.21 mi10:41:4140:516:3420:17
6:32
#2970
15K
9.32 mi11:02:091:01:196:3520:28
6:35
#3042
20K
12.43 mi11:23:001:22:106:3720:51
6:43
#3154
Half
13.11 mi11:27:351:26:456:374:35
6:43
#3218
25K
15.53 mi11:44:241:43:346:4016:49
6:56
#3492
30K
18.64 mi12:06:342:05:446:4522:10
7:08
#3806
20M
20.00 mi12:16:192:15:296:469:45
7:10
#3910
21M
21.00 mi12:25:112:24:216:528:52
8:52
#4533
35K
21.75 mi12:31:122:30:226:556:01
8:03
#4821
23M
23.00 mi12:41:072:40:176:589:55
7:55
#5044
24M
24.00 mi12:48:012:47:116:586:54
6:54
#4961
40K
24.85 mi12:53:542:53:046:585:53
6:53
#4859
25.2M
25.20 mi12:56:282:55:386:582:34
7:27
#4825
Finish
26.22 mi13:03:463:02:566:597:18
7:10
#4820
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi3022286428643205(Top 12%)3051(Top 20%)3051(Top 136%)
10K6.21 mi3.10 mi2970+522833+312833+312967(Top 11%)2835(Top 19%)2835(Top 127%)
15K9.32 mi3.11 mi3042-722900-672900-673205(Top 12%)3051(Top 20%)3051(Top 136%)
20K12.43 mi3.11 mi3154-1123003-1033003-1033673(Top 14%)3477(Top 23%)3477(Top 155%)
Half13.11 mi0.68 mi3218-643063-603063-604547(Top 17%)4239(Top 28%)4239(Top 189%)
25K15.53 mi2.42 mi3492-2743312-2493312-2495172(Top 19%)4770(Top 31%)4770(Top 213%)
30K18.64 mi3.11 mi3806-3143591-2793591-2795107(Top 19%)4686(Top 31%)4686(Top 209%)
20M20.00 mi1.36 mi3910-1043682-913682-914973(Top 19%)4519(Top 30%)4519(Top 202%)
21M21.00 mi1.00 mi4533-6234229-5474229-54712596(Top 47%)8834(Top 58%)8834(Top 394%)
35K21.75 mi0.75 mi4821-2884478-2494478-24912360(Top 46%)8694(Top 57%)8694(Top 388%)
23M23.00 mi1.25 mi5044-2234645-1674645-1679164(Top 34%)7032(Top 46%)7032(Top 314%)
24M24.00 mi1.00 mi4961+834574+714574+714170(Top 16%)3796(Top 25%)3796(Top 169%)
40K24.85 mi0.85 mi4859+1024484+904484+903248(Top 12%)2978(Top 20%)2978(Top 133%)
25.2M25.20 mi0.35 mi4825+344452+324452+323656(Top 14%)3284(Top 22%)3284(Top 147%)
Finish26.22 mi1.02 mi4820+54445+74445+76161(Top 23%)5034(Top 33%)5034(Top 225%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 12%
×21stories
+97ft-345ft

Overall

3205

Males

3051

M40-44

3051

5K→10K

3.1 - 6.2 mi

Top 11%
×5stories
+79ft-138ft

Overall

2967

Males

2835

M40-44

2835

10K→15K

6.2 - 9.3 mi

Top 12%
×3stories
+67ft-78ft

Overall

3205

Males

3051

M40-44

3051

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3673

Males

3477

M40-44

3477

20K→Half

12.4 - 13.1 mi

Top 17%
×2stories
+19ft-37ft

Overall

4547

Males

4239

M40-44

4239

Half→25K

13.1 - 15.5 mi

Top 19%
×4stories
+66ft-88ft

Overall

5172

Males

4770

M40-44

4770

25K→30K

15.5 - 18.6 mi

Top 19%
×9stories
+181ft-148ft

Overall

5107

Males

4686

M40-44

4686

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

4973

Males

4519

M40-44

4519

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

12596

Males

8834

M40-44

8834

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12360

Males

8694

M40-44

8694

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9164

Males

7032

M40-44

7032

23M→24M

23.0 - 24.0 mi

Top 16%
×6stories
+12ft-82ft

Overall

4170

Males

3796

M40-44

3796

24M→40K

24.0 - 24.9 mi

Top 12%
×1story
+6ft-20ft

Overall

3248

Males

2978

M40-44

2978

40K→25.2M

24.9 - 25.2 mi

Top 14%
×1story
+13ft-16ft

Overall

3656

Males

3284

M40-44

3284

25.2M→Finish

25.2 - 26.2 mi

Top 23%
×2stories
+22ft-21ft

Overall

6161

Males

5034

M40-44

5034

Passing Analysis

Category:
Athletes Passed
716
Passed By
2514
Net Change
-1798
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3022
5K → 10K183131+52#3022#2970
10K → 15K65137-72#2970#3042
15K → 20K51163-112#3042#3154
20K → Half367-64#3154#3218
Half → 25K19293-274#3218#3492
25K → 30K30344-314#3492#3806
30K → 20M35139-104#3806#3910
20M → 21M7630-623#3910#4533
21M → 35K9297-288#4533#4821
35K → 23M25248-223#4821#5044
23M → 24M9310+83#5044#4961
24M → 40K1086+102#4961#4859
40K → 25.2M406+34#4859#4825
25.2M → Finish4843+5#4825#4820
TOTALS7162514-1798
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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