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BOSTON MARATHON 2023

Derek Smith

Bib: 27181•M

GA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:31
Rank: #22978
Start → 5K
30:31 | 9:49/mi
10K· 6.21 mi
1:00:11
Rank: #22850 (+128)
5K → 10K
29:40 | 9:33/mi
15K· 9.32 mi
1:29:24
Rank: #22566 (+284)
10K → 15K
29:13 | 9:24/mi
20K· 12.43 mi
1:58:47
Rank: #22281 (+285)
15K → 20K
29:23 | 9:27/mi
Half· 13.11 mi
2:05:18
Rank: #22273 (+8)
20K → Half
6:31 | 9:33/mi
25K· 15.53 mi
2:28:45
Rank: #22115 (+158)
Half → 25K
23:27 | 9:40/mi
30K· 18.64 mi
2:59:24
Rank: #21835 (+280)
25K → 30K
30:39 | 9:52/mi
20M
3:12:37
Rank: #21671 (+164)
30K → 20M
13:13 | 9:44/mi
21M
3:22:49
Rank: #21527 (+144)
20M → 21M
10:12 | 10:12/mi
35K· 21.75 mi
3:30:15
Rank: #21500 (+27)
21M → 35K
7:26 | 9:56/mi
23M
3:43:00
Rank: #21431 (+69)
35K → 23M
12:45 | 10:11/mi
24M
3:52:54
Rank: #21387 (+44)
23M → 24M
9:54 | 9:54/mi
40K· 24.85 mi
4:01:30
Rank: #21323 (+64)
24M → 40K
8:36 | 10:04/mi
25.2M
4:05:09
Rank: #21286 (+37)
40K → 25.2M
3:39 | 10:35/mi
Finish· 26.22 mi
4:15:00
Rank: #21258 (+28)
25.2M → Finish
9:51 | 9:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:05:18
Pace9:33 /mi
2nd Half
Distance13.11 mi
Time2:09:42
Pace9:54 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4730:319:4930:31
9:49
-
10K
6.21 mi12:17:271:00:119:4129:40
9:33
-0:16
15K
9.32 mi12:46:401:29:249:3629:13
9:24
-0:09
20K
12.43 mi13:16:031:58:479:3329:23
9:27
+0:03
Half
13.11 mi13:22:342:05:189:336:31
9:33
+0:06
25K
15.53 mi13:46:012:28:459:3523:27
9:40
+0:07
30K
18.64 mi14:16:402:59:249:3730:39
9:52
+0:12
20M
20.00 mi14:29:533:12:379:3813:13
9:44
-0:08
21M
21.00 mi14:40:053:22:499:3910:12
10:12
+0:28
35K
21.75 mi14:47:313:30:159:407:26
9:56
-0:16
23M
23.00 mi15:00:163:43:009:4212:45
10:11
+0:15
24M
24.00 mi15:10:103:52:549:429:54
9:54
-0:17
40K
24.85 mi15:18:464:01:309:438:36
10:04
+0:10
25.2M
25.20 mi15:22:254:05:099:443:39
10:35
+0:31
Finish
26.22 mi15:32:164:15:009:449:51
9:40
-0:55

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

9:24 /mi

Average Pace

9:44 /mi

Slowest Pace

10:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

4:11:21

99% of race

Time at Steady Pace

3:39

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:44 /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 mi11:47:4730:319:4930:31
9:49
#22978
10K
6.21 mi12:17:271:00:119:4129:40
9:33
#22850
15K
9.32 mi12:46:401:29:249:3629:13
9:24
#22566
20K
12.43 mi13:16:031:58:479:3329:23
9:27
#22281
Half
13.11 mi13:22:342:05:189:336:31
9:33
#22273
25K
15.53 mi13:46:012:28:459:3523:27
9:40
#22115
30K
18.64 mi14:16:402:59:249:3730:39
9:52
#21835
20M
20.00 mi14:29:533:12:379:3813:13
9:44
#21671
21M
21.00 mi14:40:053:22:499:3910:12
10:12
#21527
35K
21.75 mi14:47:313:30:159:407:26
9:56
#21500
23M
23.00 mi15:00:163:43:009:4212:45
10:11
#21431
24M
24.00 mi15:10:103:52:549:429:54
9:54
#21387
40K
24.85 mi15:18:464:01:309:438:36
10:04
#21323
25.2M
25.20 mi15:22:254:05:099:443:39
10:35
#21286
Finish
26.22 mi15:32:164:15:009:449:51
9:40
#21258
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi22978135791357921963(Top 82%)13174(Top 87%)13174(Top 585%)
10K6.21 mi3.10 mi22850+12813553+2613553+2622645(Top 85%)13455(Top 89%)13455(Top 597%)
15K9.32 mi3.11 mi22566+28413419+13413419+13421963(Top 82%)13174(Top 87%)13174(Top 585%)
20K12.43 mi3.11 mi22281+28513285+13413285+13421417(Top 80%)12918(Top 85%)12918(Top 574%)
Half13.11 mi0.68 mi22273+813280+513280+522236(Top 84%)13295(Top 88%)13295(Top 590%)
25K15.53 mi2.42 mi22115+15813201+7913201+7921358(Top 80%)12864(Top 85%)12864(Top 571%)
30K18.64 mi3.11 mi21835+28013072+12913072+12920659(Top 78%)12495(Top 82%)12495(Top 555%)
20M20.00 mi1.36 mi21671+16412988+8412988+8419626(Top 74%)11957(Top 79%)11957(Top 531%)
21M21.00 mi1.00 mi21527+14412912+7612912+7618705(Top 70%)11524(Top 76%)11524(Top 512%)
35K21.75 mi0.75 mi21500+2712891+2112891+2121098(Top 79%)12536(Top 83%)12536(Top 557%)
23M23.00 mi1.25 mi21431+6912847+4412847+4420513(Top 77%)12254(Top 81%)12254(Top 544%)
24M24.00 mi1.00 mi21387+4412816+3112816+3120502(Top 77%)12219(Top 81%)12219(Top 543%)
40K24.85 mi0.85 mi21323+6412776+4012776+4020124(Top 76%)11983(Top 79%)11983(Top 532%)
25.2M25.20 mi0.35 mi21286+3712755+2112755+2119348(Top 73%)11639(Top 77%)11639(Top 517%)
Finish26.22 mi1.02 mi21258+2812734+2112734+2120670(Top 78%)12256(Top 81%)12256(Top 544%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

21963

Males

13174

M45-49

13174

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

22645

Males

13455

M45-49

13455

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

21963

Males

13174

M45-49

13174

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

21417

Males

12918

M45-49

12918

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

22236

Males

13295

M45-49

13295

Half→25K

13.1 - 15.5 mi

Top 80%
×4stories
+66ft-88ft

Overall

21358

Males

12864

M45-49

12864

25K→30K

15.5 - 18.6 mi

Top 78%
×9stories
+181ft-148ft

Overall

20659

Males

12495

M45-49

12495

30K→20M

18.6 - 20.0 mi

Top 74%
×5stories
+64ft-50ft

Overall

19626

Males

11957

M45-49

11957

20M→21M

20.0 - 21.0 mi

Top 70%
×8stories
+106ft-24ft

Overall

18705

Males

11524

M45-49

11524

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

21098

Males

12536

M45-49

12536

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

20513

Males

12254

M45-49

12254

23M→24M

23.0 - 24.0 mi

Top 77%
×6stories
+12ft-82ft

Overall

20502

Males

12219

M45-49

12219

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20124

Males

11983

M45-49

11983

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19348

Males

11639

M45-49

11639

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2stories
+22ft-21ft

Overall

20670

Males

12256

M45-49

12256

Passing Analysis

Category:
Athletes Passed
2149
Passed By
429
Net Change
+1720
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22978
5K → 10K303175+128#22978#22850
10K → 15K32137+284#22850#22566
15K → 20K30823+285#22566#22281
20K → Half2315+8#22281#22273
Half → 25K18931+158#22273#22115
25K → 30K31131+280#22115#21835
30K → 20M1695+164#21835#21671
20M → 21M1506+144#21671#21527
21M → 35K4316+27#21527#21500
35K → 23M9324+69#21500#21431
23M → 24M6824+44#21431#21387
24M → 40K7814+64#21387#21323
40K → 25.2M469+37#21323#21286
25.2M → Finish4719+28#21286#21258
TOTALS2149429+1720
📊

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