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BOSTON MARATHON 2023

Justin Cazel

Bib: 25242•M

SC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
10:19/mi
32:04
↑ 97↓ 3451.5%
10K· 6.21 mi
10:20/mi
1:04:11
↑ 79↓ 1380.4%
15K· 9.32 mi
10:11/mi
1:35:48
↑ 67↓ 78
20K· 12.43 mi
10:42/mi
2:09:04
↑ 106↓ 860.1%
Half· 13.11 mi
10:30/mi
2:16:14
↑ 19↓ 370.5%
25K· 15.53 mi
11:20/mi
2:43:42
↑ 66↓ 880.2%
30K· 18.64 mi
12:34/mi
3:22:46
↑ 181↓ 1480.2%
20M
13:30/mi
3:41:06
↑ 64↓ 500.2%
21M
13:30/mi
3:54:36
↑ 106↓ 241.6%
35K· 21.75 mi
12:37/mi
4:04:02
↑ 17↓ 861.7%
23M
13:33/mi
4:21:00
↑ 23↓ 630.6%
24M
13:04/mi
4:34:04
↓ 821.3%
40K· 24.85 mi
14:13/mi
4:46:13
↓ 200.3%
25.2M
14:15/mi
4:51:08
↑ 13↓ 160.2%
Finish· 26.22 mi
12:21/mi
5:03:43
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:16:14
Pace10:24 /mi
2nd Half
Distance13.11 mi
Time2:47:29
Pace12:47 /mi
📊Positive Split: 22.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:4732:0410:1932:04
10:19
-
10K
6.21 mi12:19:541:04:1110:2032:07
10:20
+0:01
15K
9.32 mi12:51:311:35:4810:1731:37
10:11
-0:09
20K
12.43 mi13:24:472:09:0410:2333:16
10:42
+0:31
Half
13.11 mi13:31:572:16:1410:247:10
10:30
-0:12
25K
15.53 mi13:59:252:43:4210:3227:28
11:20
+0:50
30K
18.64 mi14:38:293:22:4610:5339:04
12:34
+1:14
20M
20.00 mi14:56:493:41:0611:0318:20
13:30
+0:56
21M
21.00 mi15:10:193:54:3611:1013:30
13:30
0:00
35K
21.75 mi15:19:454:04:0211:139:26
12:37
-0:53
23M
23.00 mi15:36:434:21:0011:2116:58
13:33
+0:56
24M
24.00 mi15:49:474:34:0411:2513:04
13:04
-0:29
40K
24.85 mi16:01:564:46:1311:3112:09
14:13
+1:09
25.2M
25.20 mi16:06:514:51:0811:334:55
14:15
+0:02
Finish
26.22 mi16:19:265:03:4311:3612:35
12:21
-1:54

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

10:11 /mi

Average Pace

11:36 /mi

Slowest Pace

14:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:43:42

54% of race

Time at Steady Pace

1:14:09

24% of race

Time at Slower Pace

1:05:52

22% of race

Average Pace: 11:35 /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 mi11:47:4732:0410:1932:04
10:19
#24268
10K
6.21 mi12:19:541:04:1110:2032:07
10:20
#24327
15K
9.32 mi12:51:311:35:4810:1731:37
10:11
#24170
20K
12.43 mi13:24:472:09:0410:2333:16
10:42
#24190
Half
13.11 mi13:31:572:16:1410:247:10
10:30
#24184
25K
15.53 mi13:59:252:43:4210:3227:28
11:20
#24253
30K
18.64 mi14:38:293:22:4610:5339:04
12:34
#24495
20M
20.00 mi14:56:493:41:0611:0318:20
13:30
#24614
21M
21.00 mi15:10:193:54:3611:1013:30
13:30
#24649
35K
21.75 mi15:19:454:04:0211:139:26
12:37
#24696
23M
23.00 mi15:36:434:21:0011:2116:58
13:33
#24781
24M
24.00 mi15:49:474:34:0411:2513:04
13:04
#24842
40K
24.85 mi16:01:564:46:1311:3112:09
14:13
#24928
25.2M
25.20 mi16:06:514:51:0811:334:55
14:15
#24958
Finish
26.22 mi16:19:265:03:4311:3612:35
12:21
#24987
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi24268142261422623824(Top 89%)14005(Top 92%)14005(Top 683%)
10K6.21 mi3.10 mi24327-5914239-1314239-1324363(Top 92%)14247(Top 94%)14247(Top 694%)
15K9.32 mi3.11 mi24170+15714164+7514164+7523824(Top 89%)14005(Top 92%)14005(Top 683%)
20K12.43 mi3.11 mi24190-2014172-814172-824186(Top 91%)14147(Top 93%)14147(Top 689%)
Half13.11 mi0.68 mi24184+614166+614166+624219(Top 91%)14153(Top 93%)14153(Top 690%)
25K15.53 mi2.42 mi24253-6914183-1714183-1724450(Top 92%)14224(Top 94%)14224(Top 693%)
30K18.64 mi3.11 mi24495-24214274-9114274-9125065(Top 94%)14439(Top 95%)14439(Top 704%)
20M20.00 mi1.36 mi24614-11914315-4114315-4125548(Top 96%)14644(Top 96%)14644(Top 714%)
21M21.00 mi1.00 mi24649-3514327-1214327-1224574(Top 92%)14170(Top 93%)14170(Top 691%)
35K21.75 mi0.75 mi24696-4714340-1314340-1325264(Top 95%)14451(Top 95%)14451(Top 704%)
23M23.00 mi1.25 mi24781-8514363-2314363-2325536(Top 96%)14598(Top 96%)14598(Top 711%)
24M24.00 mi1.00 mi24842-6114381-1814381-1825516(Top 96%)14559(Top 96%)14559(Top 710%)
40K24.85 mi0.85 mi24928-8614411-3014411-3025792(Top 97%)14695(Top 97%)14695(Top 716%)
25.2M25.20 mi0.35 mi24958-3014427-1614427-1625190(Top 95%)14382(Top 95%)14382(Top 701%)
Finish26.22 mi1.02 mi24987-2914433-614433-625551(Top 96%)14582(Top 96%)14582(Top 711%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

23824

Males

14005

M50-54

14005

5K→10K

3.1 - 6.2 mi

Top 92%
×5story building
+79ft-138ft

Overall

24363

Males

14247

M50-54

14247

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

23824

Males

14005

M50-54

14005

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

24186

Males

14147

M50-54

14147

20K→Half

12.4 - 13.1 mi

Top 91%
×2story building
+19ft-37ft

Overall

24219

Males

14153

M50-54

14153

Half→25K

13.1 - 15.5 mi

Top 92%
×4story building
+66ft-88ft

Overall

24450

Males

14224

M50-54

14224

25K→30K

15.5 - 18.6 mi

Top 94%
×9story building
+181ft-148ft

Overall

25065

Males

14439

M50-54

14439

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

25548

Males

14644

M50-54

14644

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

24574

Males

14170

M50-54

14170

21M→35K

21.0 - 21.8 mi

Top 95%
×7story building
+17ft-86ft

Overall

25264

Males

14451

M50-54

14451

35K→23M

21.8 - 23.0 mi

Top 96%
×5story building
+23ft-63ft

Overall

25536

Males

14598

M50-54

14598

23M→24M

23.0 - 24.0 mi

Top 96%
×6story building
+12ft-82ft

Overall

25516

Males

14559

M50-54

14559

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

25792

Males

14695

M50-54

14695

40K→25.2M

24.9 - 25.2 mi

Top 95%
×1story
+13ft-16ft

Overall

25190

Males

14382

M50-54

14382

25.2M→Finish

25.2 - 26.2 mi

Top 96%
×2story building
+22ft-21ft

Overall

25551

Males

14582

M50-54

14582

Passing Analysis

Category:
Athletes Passed
725
Passed By
1444
Net Change
-719
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24268
5K → 10K165224-59#24268#24327
10K → 15K22164+157#24327#24170
15K → 20K104124-20#24170#24190
20K → Half2317+6#24190#24184
Half → 25K76145-69#24184#24253
25K → 30K49291-242#24253#24495
30K → 20M16135-119#24495#24614
20M → 21M2156-35#24614#24649
21M → 35K1764-47#24649#24696
35K → 23M893-85#24696#24781
23M → 24M869-61#24781#24842
24M → 40K793-86#24842#24928
40K → 25.2M232-30#24928#24958
25.2M → Finish837-29#24958#24987
TOTALS7251444-719
📊

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