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BOSTON MARATHON 2023

Michael Blackston

Bib: 8921•M

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 17%
Gender (Male)
#0 / 15176
Top 28%
Masters (Masters Men)
#0 / 9891
Top 14%
Division (M40-44)
#0 / 2241
Top 34%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:03
Rank: #4418
Start → 5K
21:03 | 6:47/mi
10K· 6.21 mi
41:52
Rank: #4360 (+58)
5K → 10K
20:49 | 6:42/mi
15K· 9.32 mi
1:02:44
Rank: #4322 (+38)
10K → 15K
20:52 | 6:43/mi
20K· 12.43 mi
1:23:39
Rank: #4178 (+144)
15K → 20K
20:55 | 6:44/mi
Half· 13.11 mi
1:28:11
Rank: #4154 (+24)
20K → Half
4:32 | 6:39/mi
25K· 15.53 mi
1:44:29
Rank: #4024 (+130)
Half → 25K
16:18 | 6:43/mi
30K· 18.64 mi
2:05:50
Rank: #3856 (+168)
25K → 30K
21:21 | 6:52/mi
20M
2:15:08
Rank: #3754 (+102)
30K → 20M
9:18 | 6:51/mi
21M
2:22:25
Rank: #3718 (+36)
20M → 21M
7:17 | 7:17/mi
35K· 21.75 mi
2:27:34
Rank: #3739 (-21)
21M → 35K
5:09 | 6:53/mi
23M
2:36:56
Rank: #3967 (-228)
35K → 23M
9:22 | 7:29/mi
24M
2:44:32
Rank: #4243 (-276)
23M → 24M
7:36 | 7:36/mi
40K· 24.85 mi
2:50:54
Rank: #4323 (-80)
24M → 40K
6:22 | 7:27/mi
25.2M
2:53:51
Rank: #4404 (-81)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
3:01:44
Rank: #4561 (-157)
25.2M → Finish
7:53 | 7:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:11
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:33:33
Pace7:08 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:2421:036:4721:03
6:47
-
10K
6.21 mi11:07:1341:526:4420:49
6:42
-0:05
15K
9.32 mi11:28:051:02:446:4420:52
6:43
+0:01
20K
12.43 mi11:49:001:23:396:4420:55
6:44
+0:01
Half
13.11 mi11:53:321:28:116:444:32
6:39
-0:05
25K
15.53 mi12:09:501:44:296:4416:18
6:43
+0:04
30K
18.64 mi12:31:112:05:506:4521:21
6:52
+0:09
20M
20.00 mi12:40:292:15:086:459:18
6:51
-0:01
21M
21.00 mi12:47:462:22:256:477:17
7:17
+0:26
35K
21.75 mi12:52:552:27:346:475:09
6:53
-0:24
23M
23.00 mi13:02:172:36:566:499:22
7:29
+0:36
24M
24.00 mi13:09:532:44:326:517:36
7:36
+0:07
40K
24.85 mi13:16:152:50:546:536:22
7:27
-0:09
25.2M
25.20 mi13:19:122:53:516:542:57
8:33
+1:06
Finish
26.22 mi13:27:053:01:446:567:53
7:44
-0:49

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

6:39 /mi

Average Pace

6:56 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:20:17

77% of race

Time at Slower Pace

41:27

23% of race

Average Pace: 6:56 /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 mi10:46:2421:036:4721:03
6:47
#4418
10K
6.21 mi11:07:1341:526:4420:49
6:42
#4360
15K
9.32 mi11:28:051:02:446:4420:52
6:43
#4322
20K
12.43 mi11:49:001:23:396:4420:55
6:44
#4178
Half
13.11 mi11:53:321:28:116:444:32
6:39
#4154
25K
15.53 mi12:09:501:44:296:4416:18
6:43
#4024
30K
18.64 mi12:31:112:05:506:4521:21
6:52
#3856
20M
20.00 mi12:40:292:15:086:459:18
6:51
#3754
21M
21.00 mi12:47:462:22:256:477:17
7:17
#3718
35K
21.75 mi12:52:552:27:346:475:09
6:53
#3739
23M
23.00 mi13:02:172:36:566:499:22
7:29
#3967
24M
24.00 mi13:09:532:44:326:517:36
7:36
#4243
40K
24.85 mi13:16:152:50:546:536:22
7:27
#4323
25.2M
25.20 mi13:19:122:53:516:542:57
8:33
#4404
Finish
26.22 mi13:27:053:01:446:567:53
7:44
#4561
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4418412641264290(Top 16%)4020(Top 26%)4020(Top 179%)
10K6.21 mi3.10 mi4360+584084+424084+424337(Top 16%)4061(Top 27%)4061(Top 181%)
15K9.32 mi3.11 mi4322+384048+364048+364290(Top 16%)4020(Top 26%)4020(Top 179%)
20K12.43 mi3.11 mi4178+1443920+1283920+1283832(Top 14%)3614(Top 24%)3614(Top 161%)
Half13.11 mi0.68 mi4154+243899+213899+213853(Top 14%)3637(Top 24%)3637(Top 162%)
25K15.53 mi2.42 mi4024+1303786+1133786+1133561(Top 13%)3366(Top 22%)3366(Top 150%)
30K18.64 mi3.11 mi3856+1683636+1503636+1503487(Top 13%)3278(Top 22%)3278(Top 146%)
20M20.00 mi1.36 mi3754+1023544+923544+923108(Top 12%)2922(Top 19%)2922(Top 130%)
21M21.00 mi1.00 mi3718+363509+353509+353541(Top 13%)3292(Top 22%)3292(Top 147%)
35K21.75 mi0.75 mi3739-213524-153524-154672(Top 18%)4237(Top 28%)4237(Top 189%)
23M23.00 mi1.25 mi3967-2283722-1983722-1986288(Top 24%)5360(Top 35%)5360(Top 239%)
24M24.00 mi1.00 mi4243-2763973-2513973-2518344(Top 31%)6506(Top 43%)6506(Top 290%)
40K24.85 mi0.85 mi4323-804039-664039-666319(Top 24%)5218(Top 34%)5218(Top 233%)
25.2M25.20 mi0.35 mi4404-814109-704109-709738(Top 37%)7124(Top 47%)7124(Top 318%)
Finish26.22 mi1.02 mi4561-1574235-1264235-12610164(Top 38%)7364(Top 49%)7364(Top 329%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4290

Males

4020

M40-44

4020

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4337

Males

4061

M40-44

4061

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4290

Males

4020

M40-44

4020

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

3832

Males

3614

M40-44

3614

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

3853

Males

3637

M40-44

3637

Half→25K

13.1 - 15.5 mi

Top 13%
×4stories
+66ft-88ft

Overall

3561

Males

3366

M40-44

3366

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3487

Males

3278

M40-44

3278

30K→20M

18.6 - 20.0 mi

Top 12%
×5stories
+64ft-50ft

Overall

3108

Males

2922

M40-44

2922

20M→21M

20.0 - 21.0 mi

Top 13%
×8stories
+106ft-24ft

Overall

3541

Males

3292

M40-44

3292

21M→35K

21.0 - 21.8 mi

Top 18%
×7stories
+17ft-86ft

Overall

4672

Males

4237

M40-44

4237

35K→23M

21.8 - 23.0 mi

Top 24%
×5stories
+23ft-63ft

Overall

6288

Males

5360

M40-44

5360

23M→24M

23.0 - 24.0 mi

Top 31%
×6stories
+12ft-82ft

Overall

8344

Males

6506

M40-44

6506

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6319

Males

5218

M40-44

5218

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9738

Males

7124

M40-44

7124

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2stories
+22ft-21ft

Overall

10164

Males

7364

M40-44

7364

Passing Analysis

Category:
Athletes Passed
1240
Passed By
1383
Net Change
-143
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4418
5K → 10K238180+58#4418#4360
10K → 15K147109+38#4360#4322
15K → 20K17329+144#4322#4178
20K → Half339+24#4178#4154
Half → 25K14919+130#4154#4024
25K → 30K20436+168#4024#3856
30K → 20M11412+102#3856#3754
20M → 21M7640+36#3754#3718
21M → 35K2041-21#3718#3739
35K → 23M20248-228#3739#3967
23M → 24M12288-276#3967#4243
24M → 40K29109-80#4243#4323
40K → 25.2M1293-81#4323#4404
25.2M → Finish13170-157#4404#4561
TOTALS12401383-143
📊

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