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BOSTON MARATHON 2023

Clay Alford

Bib: 11982•M

NC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 28%
Gender (Male)
#0 / 15176
Top 42%
Masters (Masters Men)
#0 / 9891
Top 29%
Division (M45-49)
#0 / 2252
Top 38%
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
7:17/mi
22:38
↑ 97↓ 3451.5%
10K· 6.21 mi
7:14/mi
45:07
↑ 79↓ 1380.4%
15K· 9.32 mi
7:11/mi
1:07:27
↑ 67↓ 78
20K· 12.43 mi
7:16/mi
1:30:02
↑ 106↓ 860.1%
Half· 13.11 mi
7:12/mi
1:34:57
↑ 19↓ 370.5%
25K· 15.53 mi
7:16/mi
1:52:34
↑ 66↓ 880.2%
30K· 18.64 mi
7:32/mi
2:15:57
↑ 181↓ 1480.2%
20M
7:38/mi
2:26:19
↑ 64↓ 500.2%
21M
8:05/mi
2:34:24
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:39:55
↑ 17↓ 861.7%
23M
7:35/mi
2:49:25
↑ 23↓ 630.6%
24M
7:23/mi
2:56:48
↓ 821.3%
40K· 24.85 mi
7:40/mi
3:03:21
↓ 200.3%
25.2M
8:16/mi
3:06:12
↑ 13↓ 160.2%
Finish· 26.22 mi
7:33/mi
3:13:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:57
Pace7:15 /mi
2nd Half
Distance13.11 mi
Time1:38:57
Pace7:33 /mi
📊Positive Split: 4.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:2422:387:1722:38
7:17
-
10K
6.21 mi11:11:5345:077:1622:29
7:14
-0:03
15K
9.32 mi11:34:131:07:277:1422:20
7:11
-0:03
20K
12.43 mi11:56:481:30:027:1522:35
7:16
+0:05
Half
13.11 mi12:01:431:34:577:154:55
7:12
-0:04
25K
15.53 mi12:19:201:52:347:1517:37
7:16
+0:04
30K
18.64 mi12:42:432:15:577:1823:23
7:32
+0:16
20M
20.00 mi12:53:052:26:197:1910:22
7:38
+0:06
21M
21.00 mi13:01:102:34:247:218:05
8:05
+0:27
35K
21.75 mi13:06:412:39:557:215:31
7:22
-0:43
23M
23.00 mi13:16:112:49:257:229:30
7:35
+0:13
24M
24.00 mi13:23:342:56:487:227:23
7:23
-0:12
40K
24.85 mi13:30:073:03:217:236:33
7:40
+0:17
25.2M
25.20 mi13:32:583:06:127:232:51
8:16
+0:36
Finish
26.22 mi13:40:403:13:547:247:42
7:33
-0:43

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

7:11 /mi

Average Pace

7:24 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:02:58

94% of race

Time at Steady Pace

10:56

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:24 /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 mi10:49:2422:387:1722:38
7:17
#8013
10K
6.21 mi11:11:5345:077:1622:29
7:14
#8187
15K
9.32 mi11:34:131:07:277:1422:20
7:11
#8018
20K
12.43 mi11:56:481:30:027:1522:35
7:16
#7864
Half
13.11 mi12:01:431:34:577:154:55
7:12
#7859
25K
15.53 mi12:19:201:52:347:1517:37
7:16
#7696
30K
18.64 mi12:42:432:15:577:1823:23
7:32
#7596
20M
20.00 mi12:53:052:26:197:1910:22
7:38
#7553
21M
21.00 mi13:01:102:34:247:218:05
8:05
#7536
35K
21.75 mi13:06:412:39:557:215:31
7:22
#7521
23M
23.00 mi13:16:112:49:257:229:30
7:35
#7438
24M
24.00 mi13:23:342:56:487:227:23
7:23
#7384
40K
24.85 mi13:30:073:03:217:236:33
7:40
#7376
25.2M
25.20 mi13:32:583:06:127:232:51
8:16
#7379
Finish
26.22 mi13:40:403:13:547:247:42
7:33
#7406
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi8013698669867717(Top 29%)6729(Top 44%)6729(Top 299%)
10K6.21 mi3.10 mi8187-1747077-917077-918366(Top 31%)7176(Top 47%)7176(Top 319%)
15K9.32 mi3.11 mi8018+1696965+1126965+1127717(Top 29%)6729(Top 44%)6729(Top 299%)
20K12.43 mi3.11 mi7864+1546852+1136852+1137552(Top 28%)6596(Top 43%)6596(Top 293%)
Half13.11 mi0.68 mi7859+56846+66846+67859(Top 30%)6807(Top 45%)6807(Top 302%)
25K15.53 mi2.42 mi7696+1636720+1266720+1267058(Top 27%)6198(Top 41%)6198(Top 275%)
30K18.64 mi3.11 mi7596+1006623+976623+977395(Top 28%)6322(Top 42%)6322(Top 281%)
20M20.00 mi1.36 mi7553+436563+606563+607663(Top 29%)6379(Top 42%)6379(Top 283%)
21M21.00 mi1.00 mi7536+176539+246539+247867(Top 30%)6397(Top 42%)6397(Top 284%)
35K21.75 mi0.75 mi7521+156518+216518+217607(Top 29%)6249(Top 41%)6249(Top 277%)
23M23.00 mi1.25 mi7438+836445+736445+736988(Top 26%)5816(Top 38%)5816(Top 258%)
24M24.00 mi1.00 mi7384+546392+536392+536923(Top 26%)5676(Top 37%)5676(Top 252%)
40K24.85 mi0.85 mi7376+86359+336359+337674(Top 29%)6038(Top 40%)6038(Top 268%)
25.2M25.20 mi0.35 mi7379-36350+96350+97991(Top 30%)6151(Top 41%)6151(Top 273%)
Finish26.22 mi1.02 mi7406-276354-46354-48928(Top 34%)6706(Top 44%)6706(Top 298%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

7717

Males

6729

M45-49

6729

5K→10K

3.1 - 6.2 mi

Top 31%
×5story building
+79ft-138ft

Overall

8366

Males

7176

M45-49

7176

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

7717

Males

6729

M45-49

6729

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7552

Males

6596

M45-49

6596

20K→Half

12.4 - 13.1 mi

Top 30%
×2story building
+19ft-37ft

Overall

7859

Males

6807

M45-49

6807

Half→25K

13.1 - 15.5 mi

Top 27%
×4story building
+66ft-88ft

Overall

7058

Males

6198

M45-49

6198

25K→30K

15.5 - 18.6 mi

Top 28%
×9story building
+181ft-148ft

Overall

7395

Males

6322

M45-49

6322

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

7663

Males

6379

M45-49

6379

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

7867

Males

6397

M45-49

6397

21M→35K

21.0 - 21.8 mi

Top 29%
×7story building
+17ft-86ft

Overall

7607

Males

6249

M45-49

6249

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

6988

Males

5816

M45-49

5816

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

6923

Males

5676

M45-49

5676

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7674

Males

6038

M45-49

6038

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

7991

Males

6151

M45-49

6151

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

8928

Males

6706

M45-49

6706

Passing Analysis

Category:
Athletes Passed
1517
Passed By
910
Net Change
+607
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8013
5K → 10K151325-174#8013#8187
10K → 15K23061+169#8187#8018
15K → 20K19642+154#8018#7864
20K → Half2217+5#7864#7859
Half → 25K18522+163#7859#7696
25K → 30K18282+100#7696#7596
30K → 20M9956+43#7596#7553
20M → 21M6346+17#7553#7536
21M → 35K4328+15#7536#7521
35K → 23M11229+83#7521#7438
23M → 24M8430+54#7438#7384
24M → 40K5749+8#7384#7376
40K → 25.2M2831-3#7376#7379
25.2M → Finish6592-27#7379#7406
TOTALS1517910+607
📊

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