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BOSTON MARATHON 2023

Lawrence Blackman

Bib: 24284•M

CO

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M75-79)
#0 / 49
Top 16%
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
9:06/mi
28:17
↑ 97↓ 3451.5%
10K· 6.21 mi
9:01/mi
56:17
↑ 79↓ 1380.4%
15K· 9.32 mi
9:09/mi
1:24:42
↑ 67↓ 78
20K· 12.43 mi
9:38/mi
1:54:37
↑ 106↓ 860.1%
Half· 13.11 mi
9:32/mi
2:01:07
↑ 19↓ 370.5%
25K· 15.53 mi
9:50/mi
2:24:57
↑ 66↓ 880.2%
30K· 18.64 mi
9:59/mi
2:55:57
↑ 181↓ 1480.2%
20M
10:28/mi
3:10:11
↑ 64↓ 500.2%
21M
10:46/mi
3:20:57
↑ 106↓ 241.6%
35K· 21.75 mi
9:49/mi
3:28:18
↑ 17↓ 861.7%
23M
10:16/mi
3:41:09
↑ 23↓ 630.6%
24M
9:40/mi
3:50:49
↓ 821.3%
40K· 24.85 mi
10:06/mi
3:59:27
↓ 200.3%
25.2M
10:44/mi
4:03:09
↑ 13↓ 160.2%
Finish· 26.22 mi
9:51/mi
4:13:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:01:07
Pace9:14 /mi
2nd Half
Distance13.11 mi
Time2:12:04
Pace10:04 /mi
📊Positive Split: 9.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:5428:179:0628:17
9:06
-
10K
6.21 mi12:11:5456:179:0328:00
9:01
-0:05
15K
9.32 mi12:40:191:24:429:0528:25
9:09
+0:08
20K
12.43 mi13:10:141:54:379:1329:55
9:38
+0:29
Half
13.11 mi13:16:442:01:079:146:30
9:32
-0:06
25K
15.53 mi13:40:342:24:579:2023:50
9:50
+0:18
30K
18.64 mi14:11:342:55:579:2631:00
9:59
+0:09
20M
20.00 mi14:25:483:10:119:3114:14
10:28
+0:29
21M
21.00 mi14:36:343:20:579:3410:46
10:46
+0:18
35K
21.75 mi14:43:553:28:189:357:21
9:49
-0:57
23M
23.00 mi14:56:463:41:099:3712:51
10:16
+0:27
24M
24.00 mi15:06:263:50:499:379:40
9:40
-0:36
40K
24.85 mi15:15:043:59:279:388:38
10:06
+0:26
25.2M
25.20 mi15:18:464:03:099:393:42
10:44
+0:38
Finish
26.22 mi15:28:484:13:119:4010:02
9:51
-0:53

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

9:01 /mi

Average Pace

9:40 /mi

Slowest Pace

10:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:52:00

68% of race

Time at Steady Pace

1:06:43

26% of race

Time at Slower Pace

14:28

6% of race

Average Pace: 9:39 /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 mi11:43:5428:179:0628:17
9:06
#20879
10K
6.21 mi12:11:5456:179:0328:00
9:01
#20889
15K
9.32 mi12:40:191:24:429:0528:25
9:09
#20971
20K
12.43 mi13:10:141:54:379:1329:55
9:38
#21259
Half
13.11 mi13:16:442:01:079:146:30
9:32
#21308
25K
15.53 mi13:40:342:24:579:2023:50
9:50
#21375
30K
18.64 mi14:11:342:55:579:2631:00
9:59
#21288
20M
20.00 mi14:25:483:10:119:3114:14
10:28
#21305
21M
21.00 mi14:36:343:20:579:3410:46
10:46
#21250
35K
21.75 mi14:43:553:28:189:357:21
9:49
#21229
23M
23.00 mi14:56:463:41:099:3712:51
10:16
#21176
24M
24.00 mi15:06:263:50:499:379:40
9:40
#21095
40K
24.85 mi15:15:043:59:279:388:38
10:06
#21063
25.2M
25.20 mi15:18:464:03:099:393:42
10:44
#21046
Finish
26.22 mi15:28:484:13:119:4010:02
9:51
#21046
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM75-79Seg. OverallSeg. MalesSeg. M75-79
5K3.11 mi3.11 mi20879125471254721126(Top 79%)12807(Top 84%)12807(Top 26137%)
10K6.21 mi3.10 mi20889-1012611-6412611-6420921(Top 79%)12684(Top 84%)12684(Top 25886%)
15K9.32 mi3.11 mi20971-8212677-6612677-6621126(Top 79%)12807(Top 84%)12807(Top 26137%)
20K12.43 mi3.11 mi21259-28812828-15112828-15121943(Top 82%)13153(Top 87%)13153(Top 26843%)
Half13.11 mi0.68 mi21308-4912849-2112849-2122148(Top 83%)13258(Top 87%)13258(Top 27057%)
25K15.53 mi2.42 mi21375-6712878-2912878-2921807(Top 82%)13058(Top 86%)13058(Top 26649%)
30K18.64 mi3.11 mi21288+8712825+5312825+5320972(Top 79%)12621(Top 83%)12621(Top 25757%)
20M20.00 mi1.36 mi21305-1712815+1012815+1021662(Top 81%)12849(Top 85%)12849(Top 26222%)
21M21.00 mi1.00 mi21250+5512780+3512780+3520293(Top 76%)12188(Top 80%)12188(Top 24873%)
35K21.75 mi0.75 mi21229+2112759+2112759+2120818(Top 78%)12396(Top 82%)12396(Top 25298%)
23M23.00 mi1.25 mi21176+5312724+3512724+3520740(Top 78%)12352(Top 81%)12352(Top 25208%)
24M24.00 mi1.00 mi21095+8112674+5012674+5019769(Top 74%)11903(Top 78%)11903(Top 24292%)
40K24.85 mi0.85 mi21063+3212646+2812646+2820229(Top 76%)12029(Top 79%)12029(Top 24549%)
25.2M25.20 mi0.35 mi21046+1712633+1312633+1319765(Top 74%)11817(Top 78%)11817(Top 24116%)
Finish26.22 mi1.02 mi2104612631+212631+221296(Top 80%)12562(Top 83%)12562(Top 25637%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

21126

Males

12807

M75-79

12807

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

20921

Males

12684

M75-79

12684

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

21126

Males

12807

M75-79

12807

15K→20K

9.3 - 12.4 mi

Top 82%
×5story building
+106ft-86ft

Overall

21943

Males

13153

M75-79

13153

20K→Half

12.4 - 13.1 mi

Top 83%
×2story building
+19ft-37ft

Overall

22148

Males

13258

M75-79

13258

Half→25K

13.1 - 15.5 mi

Top 82%
×4story building
+66ft-88ft

Overall

21807

Males

13058

M75-79

13058

25K→30K

15.5 - 18.6 mi

Top 79%
×9story building
+181ft-148ft

Overall

20972

Males

12621

M75-79

12621

30K→20M

18.6 - 20.0 mi

Top 81%
×5story building
+64ft-50ft

Overall

21662

Males

12849

M75-79

12849

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

20293

Males

12188

M75-79

12188

21M→35K

21.0 - 21.8 mi

Top 78%
×7story building
+17ft-86ft

Overall

20818

Males

12396

M75-79

12396

35K→23M

21.8 - 23.0 mi

Top 78%
×5story building
+23ft-63ft

Overall

20740

Males

12352

M75-79

12352

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

19769

Males

11903

M75-79

11903

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20229

Males

12029

M75-79

12029

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1story
+13ft-16ft

Overall

19765

Males

11817

M75-79

11817

25.2M→Finish

25.2 - 26.2 mi

Top 80%
×2story building
+22ft-21ft

Overall

21296

Males

12562

M75-79

12562

Passing Analysis

Category:
Athletes Passed
1278
Passed By
1445
Net Change
-167
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20879
5K → 10K294304-10#20879#20889
10K → 15K137219-82#20889#20971
15K → 20K64352-288#20971#21259
20K → Half1261-49#21259#21308
Half → 25K79146-67#21308#21375
25K → 30K17487+87#21375#21288
30K → 20M6885-17#21288#21305
20M → 21M9540+55#21305#21250
21M → 35K4322+21#21250#21229
35K → 23M9340+53#21229#21176
23M → 24M887+81#21176#21095
24M → 40K6230+32#21095#21063
40K → 25.2M258+17#21063#21046
25.2M → Finish44440#21046#21046
TOTALS12781445-167
📊

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