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BOSTON MARATHON 2023

Justin Ashworth

Bib: 11505•M

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 44%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 48%
Division (M45-49)
#0 / 2252
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
7:53/mi
24:30
↑ 97↓ 3451.5%
10K· 6.21 mi
7:54/mi
49:04
↑ 79↓ 1380.4%
15K· 9.32 mi
7:52/mi
1:13:30
↑ 67↓ 78
20K· 12.43 mi
7:56/mi
1:38:09
↑ 106↓ 860.1%
Half· 13.11 mi
7:55/mi
1:43:33
↑ 19↓ 370.5%
25K· 15.53 mi
7:57/mi
2:02:50
↑ 66↓ 880.2%
30K· 18.64 mi
8:09/mi
2:28:08
↑ 181↓ 1480.2%
20M
7:56/mi
2:38:55
↑ 64↓ 500.2%
21M
8:20/mi
2:47:15
↑ 106↓ 241.6%
35K· 21.75 mi
7:45/mi
2:53:03
↑ 17↓ 861.7%
23M
7:56/mi
3:02:59
↑ 23↓ 630.6%
24M
7:47/mi
3:10:46
↓ 821.3%
40K· 24.85 mi
7:47/mi
3:17:25
↓ 200.3%
25.2M
8:19/mi
3:20:17
↑ 13↓ 160.2%
Finish· 26.22 mi
7:32/mi
3:27:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:43:33
Pace7:54 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:44:25
Pace7:58 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2024:307:5324:30
7:53
-
10K
6.21 mi11:16:5449:047:5424:34
7:54
+0:01
15K
9.32 mi11:41:201:13:307:5324:26
7:52
-0:02
20K
12.43 mi12:05:591:38:097:5424:39
7:56
+0:04
Half
13.11 mi12:11:231:43:337:545:24
7:55
-0:01
25K
15.53 mi12:30:402:02:507:5419:17
7:57
+0:02
30K
18.64 mi12:55:582:28:087:5725:18
8:09
+0:12
20M
20.00 mi13:06:452:38:557:5710:47
7:56
-0:13
21M
21.00 mi13:15:052:47:157:588:20
8:20
+0:24
35K
21.75 mi13:20:532:53:037:575:48
7:45
-0:35
23M
23.00 mi13:30:493:02:597:579:56
7:56
+0:11
24M
24.00 mi13:38:363:10:467:577:47
7:47
-0:09
40K
24.85 mi13:45:153:17:257:576:39
7:47
0:00
25.2M
25.20 mi13:48:073:20:177:572:52
8:19
+0:32
Finish
26.22 mi13:55:483:27:587:567:41
7:32
-0:47

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

7:32 /mi

Average Pace

7:56 /mi

Slowest Pace

8:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:16:46

95% of race

Time at Steady Pace

11:12

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:56 /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 mi10:52:2024:307:5324:30
7:53
#13108
10K
6.21 mi11:16:5449:047:5424:34
7:54
#13552
15K
9.32 mi11:41:201:13:307:5324:26
7:52
#13452
20K
12.43 mi12:05:591:38:097:5424:39
7:56
#13299
Half
13.11 mi12:11:231:43:337:545:24
7:55
#13305
25K
15.53 mi12:30:402:02:507:5419:17
7:57
#13104
30K
18.64 mi12:55:582:28:087:5725:18
8:09
#12870
20M
20.00 mi13:06:452:38:557:5710:47
7:56
#12597
21M
21.00 mi13:15:052:47:157:588:20
8:20
#12364
35K
21.75 mi13:20:532:53:037:575:48
7:45
#12278
23M
23.00 mi13:30:493:02:597:579:56
7:56
#12088
24M
24.00 mi13:38:363:10:467:577:47
7:47
#11980
40K
24.85 mi13:45:153:17:257:576:39
7:47
#11822
25.2M
25.20 mi13:48:073:20:177:572:52
8:19
#11756
Finish
26.22 mi13:55:483:27:587:567:41
7:32
#11602
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi131089582958213216(Top 50%)9579(Top 63%)9579(Top 425%)
10K6.21 mi3.10 mi13552-4449761-1799761-17914031(Top 53%)9947(Top 66%)9947(Top 442%)
15K9.32 mi3.11 mi13452+1009713+489713+4813216(Top 50%)9579(Top 63%)9579(Top 425%)
20K12.43 mi3.11 mi13299+1539624+899624+8912881(Top 48%)9380(Top 62%)9380(Top 417%)
Half13.11 mi0.68 mi13305-69623+19623+113605(Top 51%)9715(Top 64%)9715(Top 431%)
25K15.53 mi2.42 mi13104+2019537+869537+8612316(Top 46%)9035(Top 60%)9035(Top 401%)
30K18.64 mi3.11 mi12870+2349378+1599378+15911931(Top 45%)8769(Top 58%)8769(Top 389%)
20M20.00 mi1.36 mi12597+2739247+1319247+1319795(Top 37%)7644(Top 50%)7644(Top 339%)
21M21.00 mi1.00 mi12364+2339138+1099138+1099420(Top 35%)7307(Top 48%)7307(Top 324%)
35K21.75 mi0.75 mi12278+869078+609078+6010295(Top 39%)7788(Top 51%)7788(Top 346%)
23M23.00 mi1.25 mi12088+1908964+1148964+1149294(Top 35%)7126(Top 47%)7126(Top 316%)
24M24.00 mi1.00 mi11980+1088895+698895+699652(Top 36%)7231(Top 48%)7231(Top 321%)
40K24.85 mi0.85 mi11822+1588811+848811+848528(Top 32%)6580(Top 43%)6580(Top 292%)
25.2M25.20 mi0.35 mi11756+668774+378774+378392(Top 32%)6424(Top 42%)6424(Top 285%)
Finish26.22 mi1.02 mi11602+1548677+978677+978837(Top 33%)6665(Top 44%)6665(Top 296%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 50%
×21story building
+97ft-345ft

Overall

13216

Males

9579

M45-49

9579

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14031

Males

9947

M45-49

9947

10K→15K

6.2 - 9.3 mi

Top 50%
×3story building
+67ft-78ft

Overall

13216

Males

9579

M45-49

9579

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

12881

Males

9380

M45-49

9380

20K→Half

12.4 - 13.1 mi

Top 51%
×2story building
+19ft-37ft

Overall

13605

Males

9715

M45-49

9715

Half→25K

13.1 - 15.5 mi

Top 46%
×4story building
+66ft-88ft

Overall

12316

Males

9035

M45-49

9035

25K→30K

15.5 - 18.6 mi

Top 45%
×9story building
+181ft-148ft

Overall

11931

Males

8769

M45-49

8769

30K→20M

18.6 - 20.0 mi

Top 37%
×5story building
+64ft-50ft

Overall

9795

Males

7644

M45-49

7644

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9420

Males

7307

M45-49

7307

21M→35K

21.0 - 21.8 mi

Top 39%
×7story building
+17ft-86ft

Overall

10295

Males

7788

M45-49

7788

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9294

Males

7126

M45-49

7126

23M→24M

23.0 - 24.0 mi

Top 36%
×6story building
+12ft-82ft

Overall

9652

Males

7231

M45-49

7231

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

8528

Males

6580

M45-49

6580

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8392

Males

6424

M45-49

6424

25.2M→Finish

25.2 - 26.2 mi

Top 33%
×2story building
+22ft-21ft

Overall

8837

Males

6665

M45-49

6665

Passing Analysis

Category:
Athletes Passed
2600
Passed By
1094
Net Change
+1506
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13108
5K → 10K141585-444#13108#13552
10K → 15K251151+100#13552#13452
15K → 20K260107+153#13452#13299
20K → Half2935-6#13299#13305
Half → 25K25554+201#13305#13104
25K → 30K30975+234#13104#12870
30K → 20M2829+273#12870#12597
20M → 21M2352+233#12597#12364
21M → 35K9610+86#12364#12278
35K → 23M20717+190#12278#12088
23M → 24M13022+108#12088#11980
24M → 40K1613+158#11980#11822
40K → 25.2M715+66#11822#11756
25.2M → Finish17319+154#11756#11602
TOTALS26001094+1506
📊

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