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BOSTON MARATHON 2023

Darren Black

Bib: 12045•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 38%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 42%
Division (M50-54)
#0 / 2052
Top 42%
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
7:26/mi
23:07
↑ 97↓ 3451.5%
10K· 6.21 mi
7:32/mi
46:32
↑ 79↓ 1380.4%
15K· 9.32 mi
7:27/mi
1:09:40
↑ 67↓ 78
20K· 12.43 mi
7:27/mi
1:32:50
↑ 106↓ 860.1%
Half· 13.11 mi
7:27/mi
1:37:55
↑ 19↓ 370.5%
25K· 15.53 mi
7:32/mi
1:56:11
↑ 66↓ 880.2%
30K· 18.64 mi
7:52/mi
2:20:38
↑ 181↓ 1480.2%
20M
7:59/mi
2:31:29
↑ 64↓ 500.2%
21M
8:28/mi
2:39:57
↑ 106↓ 241.6%
35K· 21.75 mi
8:03/mi
2:45:58
↑ 17↓ 861.7%
23M
8:17/mi
2:56:20
↑ 23↓ 630.6%
24M
8:11/mi
3:04:31
↓ 821.3%
40K· 24.85 mi
8:22/mi
3:11:40
↓ 200.3%
25.2M
8:56/mi
3:14:45
↑ 13↓ 160.2%
Finish· 26.22 mi
8:10/mi
3:23:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:55
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:45:09
Pace8:01 /mi
📊Positive Split: 7.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:4423:077:2623:07
7:26
-
10K
6.21 mi11:14:0946:327:2923:25
7:32
+0:06
15K
9.32 mi11:37:171:09:407:2823:08
7:27
-0:05
20K
12.43 mi12:00:271:32:507:2823:10
7:27
0:00
Half
13.11 mi12:05:321:37:557:285:05
7:27
0:00
25K
15.53 mi12:23:481:56:117:2918:16
7:32
+0:05
30K
18.64 mi12:48:152:20:387:3324:27
7:52
+0:20
20M
20.00 mi12:59:062:31:297:3410:51
7:59
+0:07
21M
21.00 mi13:07:342:39:577:378:28
8:28
+0:29
35K
21.75 mi13:13:352:45:587:386:01
8:03
-0:25
23M
23.00 mi13:23:572:56:207:4010:22
8:17
+0:14
24M
24.00 mi13:32:083:04:317:418:11
8:11
-0:06
40K
24.85 mi13:39:173:11:407:437:09
8:22
+0:11
25.2M
25.20 mi13:42:223:14:457:443:05
8:56
+0:34
Finish
26.22 mi13:50:413:23:047:458:19
8:10
-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

7:26 /mi

Average Pace

7:45 /mi

Slowest Pace

8:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:11

57% of race

Time at Steady Pace

57:49

28% of race

Time at Slower Pace

29:04

14% of race

Average Pace: 7:45 /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 mi10:50:4423:077:2623:07
7:26
#9137
10K
6.21 mi11:14:0946:327:2923:25
7:32
#9912
15K
9.32 mi11:37:171:09:407:2823:08
7:27
#9812
20K
12.43 mi12:00:271:32:507:2823:10
7:27
#9568
Half
13.11 mi12:05:321:37:557:285:05
7:27
#9580
25K
15.53 mi12:23:481:56:117:2918:16
7:32
#9472
30K
18.64 mi12:48:152:20:387:3324:27
7:52
#9532
20M
20.00 mi12:59:062:31:297:3410:51
7:59
#9555
21M
21.00 mi13:07:342:39:577:378:28
8:28
#9561
35K
21.75 mi13:13:352:45:587:386:01
8:03
#9649
23M
23.00 mi13:23:572:56:207:4010:22
8:17
#9739
24M
24.00 mi13:32:083:04:317:418:11
8:11
#9837
40K
24.85 mi13:39:173:11:407:437:09
8:22
#9924
25.2M
25.20 mi13:42:223:14:457:443:05
8:56
#9951
Finish
26.22 mi13:50:413:23:047:458:19
8:10
#10063
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9137768376839728(Top 37%)7998(Top 53%)7998(Top 390%)
10K6.21 mi3.10 mi9912-7758100-4178100-41710759(Top 40%)8560(Top 56%)8560(Top 417%)
15K9.32 mi3.11 mi9812+1008048+528048+529728(Top 37%)7998(Top 53%)7998(Top 390%)
20K12.43 mi3.11 mi9568+2447899+1497899+1498967(Top 34%)7485(Top 49%)7485(Top 365%)
Half13.11 mi0.68 mi9580-127911-127911-129790(Top 37%)7983(Top 53%)7983(Top 389%)
25K15.53 mi2.42 mi9472+1087827+847827+849028(Top 34%)7457(Top 49%)7457(Top 363%)
30K18.64 mi3.11 mi9532-607823+47823+49889(Top 37%)7772(Top 51%)7772(Top 379%)
20M20.00 mi1.36 mi9555-237812+117812+1110134(Top 38%)7822(Top 52%)7822(Top 381%)
21M21.00 mi1.00 mi9561-67796+167796+1610258(Top 39%)7736(Top 51%)7736(Top 377%)
35K21.75 mi0.75 mi9649-887839-437839-4312376(Top 46%)8710(Top 57%)8710(Top 424%)
23M23.00 mi1.25 mi9739-907846-77846-711709(Top 44%)8327(Top 55%)8327(Top 406%)
24M24.00 mi1.00 mi9837-987873-277873-2712454(Top 47%)8600(Top 57%)8600(Top 419%)
40K24.85 mi0.85 mi9924-877885-127885-1212421(Top 47%)8502(Top 56%)8502(Top 414%)
25.2M25.20 mi0.35 mi9951-277884+17884+112097(Top 45%)8291(Top 55%)8291(Top 404%)
Finish26.22 mi1.02 mi10063-1127925-417925-4113140(Top 49%)8836(Top 58%)8836(Top 431%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21story building
+97ft-345ft

Overall

9728

Males

7998

M50-54

7998

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

10759

Males

8560

M50-54

8560

10K→15K

6.2 - 9.3 mi

Top 37%
×3story building
+67ft-78ft

Overall

9728

Males

7998

M50-54

7998

15K→20K

9.3 - 12.4 mi

Top 34%
×5story building
+106ft-86ft

Overall

8967

Males

7485

M50-54

7485

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

9790

Males

7983

M50-54

7983

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9028

Males

7457

M50-54

7457

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9889

Males

7772

M50-54

7772

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10134

Males

7822

M50-54

7822

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

10258

Males

7736

M50-54

7736

21M→35K

21.0 - 21.8 mi

Top 46%
×7story building
+17ft-86ft

Overall

12376

Males

8710

M50-54

8710

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

11709

Males

8327

M50-54

8327

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12454

Males

8600

M50-54

8600

24M→40K

24.0 - 24.9 mi

Top 47%
×1story
+6ft-20ft

Overall

12421

Males

8502

M50-54

8502

40K→25.2M

24.9 - 25.2 mi

Top 45%
×1story
+13ft-16ft

Overall

12097

Males

8291

M50-54

8291

25.2M→Finish

25.2 - 26.2 mi

Top 49%
×2story building
+22ft-21ft

Overall

13140

Males

8836

M50-54

8836

Passing Analysis

Category:
Athletes Passed
1327*
Passed By
2252
Net Change
-926
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9137
5K → 10K80855-775#9137#9912
10K → 15K227127+100#9912#9812
15K → 20K289*45+244#9812#9568
20K → Half2335-12#9568#9580
Half → 25K17062+108#9580#9472
25K → 30K161*221-60#9472#9532
30K → 20M7093-23#9532#9555
20M → 21M7682-6#9555#9561
21M → 35K17105-88#9561#9649
35K → 23M71161-90#9649#9739
23M → 24M35133-98#9739#9837
24M → 40K49136-87#9837#9924
40K → 25.2M2047-27#9924#9951
25.2M → Finish39150-112#9951#10063
TOTALS1327*2252-926

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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