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BOSTON MARATHON 2023

John Delbalso

Bib: 8548•M

OH

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0:00
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Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Division (M18-39)
#0 / 5285
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:59
Rank: #4169
Start → 5K
20:59 | 6:45/mi
10K· 6.21 mi
41:41
Rank: #4058 (+111)
5K → 10K
20:42 | 6:40/mi
15K· 9.32 mi
1:02:35
Rank: #4152 (-94)
10K → 15K
20:54 | 6:44/mi
20K· 12.43 mi
1:23:43
Rank: #4217 (-65)
15K → 20K
21:08 | 6:48/mi
Half· 13.11 mi
1:28:17
Rank: #4210 (+7)
20K → Half
4:34 | 6:42/mi
25K· 15.53 mi
1:44:57
Rank: #4284 (-74)
Half → 25K
16:40 | 6:52/mi
30K· 18.64 mi
2:06:39
Rank: #4260 (+24)
25K → 30K
21:42 | 6:59/mi
20M
2:16:06
Rank: #4196 (+64)
30K → 20M
9:27 | 6:57/mi
21M
2:23:15
Rank: #4064 (+132)
20M → 21M
7:09 | 7:09/mi
35K· 21.75 mi
2:28:20
Rank: #4051 (+13)
21M → 35K
5:05 | 6:48/mi
23M
2:36:54
Rank: #3940 (+111)
35K → 23M
8:34 | 6:51/mi
24M
2:43:33
Rank: #3855 (+85)
23M → 24M
6:39 | 6:39/mi
40K· 24.85 mi
2:49:16
Rank: #3744 (+111)
24M → 40K
5:43 | 6:41/mi
25.2M
2:51:44
Rank: #3711 (+33)
40K → 25.2M
2:28 | 7:09/mi
Finish· 26.22 mi
2:58:05
Rank: #3517 (+194)
25.2M → Finish
6:21 | 6:14/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:17
Pace6:44 /mi
2nd Half
Distance13.11 mi
Time1:29:48
Pace6:51 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:46:1620:596:4520:59
6:45
-
10K
6.21 mi11:06:5841:416:4220:42
6:40
-0:05
15K
9.32 mi11:27:521:02:356:4320:54
6:44
+0:04
20K
12.43 mi11:49:001:23:436:4421:08
6:48
+0:04
Half
13.11 mi11:53:341:28:176:444:34
6:42
-0:06
25K
15.53 mi12:10:141:44:576:4516:40
6:52
+0:10
30K
18.64 mi12:31:562:06:396:4821:42
6:59
+0:07
20M
20.00 mi12:41:232:16:066:489:27
6:57
-0:02
21M
21.00 mi12:48:322:23:156:497:09
7:09
+0:12
35K
21.75 mi12:53:372:28:206:495:05
6:48
-0:21
23M
23.00 mi13:02:112:36:546:498:34
6:51
+0:03
24M
24.00 mi13:08:502:43:336:496:39
6:39
-0:12
40K
24.85 mi13:14:332:49:166:495:43
6:41
+0:02
25.2M
25.20 mi13:17:012:51:446:492:28
7:09
+0:28
Finish
26.22 mi13:23:222:58:056:486:21
6:14
-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

6:14 /mi

Average Pace

6:48 /mi

Slowest Pace

7:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:00:39

68% of race

Time at Steady Pace

57:26

32% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:46:1620:596:4520:59
6:45
#4169
10K
6.21 mi11:06:5841:416:4220:42
6:40
#4058
15K
9.32 mi11:27:521:02:356:4320:54
6:44
#4152
20K
12.43 mi11:49:001:23:436:4421:08
6:48
#4217
Half
13.11 mi11:53:341:28:176:444:34
6:42
#4210
25K
15.53 mi12:10:141:44:576:4516:40
6:52
#4284
30K
18.64 mi12:31:562:06:396:4821:42
6:59
#4260
20M
20.00 mi12:41:232:16:066:489:27
6:57
#4196
21M
21.00 mi12:48:322:23:156:497:09
7:09
#4064
35K
21.75 mi12:53:372:28:206:495:05
6:48
#4051
23M
23.00 mi13:02:112:36:546:498:34
6:51
#3940
24M
24.00 mi13:08:502:43:336:496:39
6:39
#3855
40K
24.85 mi13:14:332:49:166:495:43
6:41
#3744
25.2M
25.20 mi13:17:012:51:446:492:28
7:09
#3711
Finish
26.22 mi13:23:222:58:056:486:21
6:14
#3517
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4169390539054379(Top 16%)4098(Top 27%)4098(Top 78%)
10K6.21 mi3.10 mi4058+1113814+913814+913978(Top 15%)3744(Top 25%)3744(Top 71%)
15K9.32 mi3.11 mi4152-943898-843898-844379(Top 16%)4098(Top 27%)4098(Top 78%)
20K12.43 mi3.11 mi4217-653953-553953-554438(Top 17%)4139(Top 27%)4139(Top 78%)
Half13.11 mi0.68 mi4210+73947+63947+64207(Top 16%)3931(Top 26%)3931(Top 74%)
25K15.53 mi2.42 mi4284-744016-694016-694744(Top 18%)4401(Top 29%)4401(Top 83%)
30K18.64 mi3.11 mi4260+243996+203996+204237(Top 16%)3947(Top 26%)3947(Top 75%)
20M20.00 mi1.36 mi4196+643936+603936+603725(Top 14%)3469(Top 23%)3469(Top 66%)
21M21.00 mi1.00 mi4064+1323811+1253811+1252848(Top 11%)2673(Top 18%)2673(Top 51%)
35K21.75 mi0.75 mi4051+133801+103801+104122(Top 15%)3772(Top 25%)3772(Top 71%)
23M23.00 mi1.25 mi3940+1113697+1043697+1042909(Top 11%)2719(Top 18%)2719(Top 51%)
24M24.00 mi1.00 mi3855+853621+763621+762841(Top 11%)2642(Top 17%)2642(Top 50%)
40K24.85 mi0.85 mi3744+1113519+1023519+1022299(Top 9%)2137(Top 14%)2137(Top 40%)
25.2M25.20 mi0.35 mi3711+333487+323487+322344(Top 9%)2177(Top 14%)2177(Top 41%)
Finish26.22 mi1.02 mi3517+1943312+1753312+1751400(Top 5%)1325(Top 9%)1325(Top 25%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4379

Males

4098

M18-39

4098

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

3978

Males

3744

M18-39

3744

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4379

Males

4098

M18-39

4098

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4438

Males

4139

M18-39

4139

20K→Half

12.4 - 13.1 mi

Top 16%
×2stories
+19ft-37ft

Overall

4207

Males

3931

M18-39

3931

Half→25K

13.1 - 15.5 mi

Top 18%
×4stories
+66ft-88ft

Overall

4744

Males

4401

M18-39

4401

25K→30K

15.5 - 18.6 mi

Top 16%
×9stories
+181ft-148ft

Overall

4237

Males

3947

M18-39

3947

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3725

Males

3469

M18-39

3469

20M→21M

20.0 - 21.0 mi

Top 11%
×8stories
+106ft-24ft

Overall

2848

Males

2673

M18-39

2673

21M→35K

21.0 - 21.8 mi

Top 15%
×7stories
+17ft-86ft

Overall

4122

Males

3772

M18-39

3772

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

2909

Males

2719

M18-39

2719

23M→24M

23.0 - 24.0 mi

Top 11%
×6stories
+12ft-82ft

Overall

2841

Males

2642

M18-39

2642

24M→40K

24.0 - 24.9 mi

Top 9%
×1story
+6ft-20ft

Overall

2299

Males

2137

M18-39

2137

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2344

Males

2177

M18-39

2177

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1400

Males

1325

M18-39

1325

Passing Analysis

Category:
Athletes Passed
1515
Passed By
863
Net Change
+652
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4169
5K → 10K289178+111#4169#4058
10K → 15K86180-94#4058#4152
15K → 20K73138-65#4152#4217
20K → Half2316+7#4217#4210
Half → 25K67141-74#4210#4284
25K → 30K126102+24#4284#4260
30K → 20M9834+64#4260#4196
20M → 21M14614+132#4196#4064
21M → 35K3421+13#4064#4051
35K → 23M12817+111#4051#3940
23M → 24M938+85#3940#3855
24M → 40K1176+111#3855#3744
40K → 25.2M385+33#3744#3711
25.2M → Finish1973+194#3711#3517
TOTALS1515863+652
📊

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