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BOSTON MARATHON 2023

John Iovanisci

Bib: 12211•M

OH

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
7:36/mi
23:37
↑ 97↓ 3451.5%
10K· 6.21 mi
7:25/mi
46:40
↑ 79↓ 1380.4%
15K· 9.32 mi
7:29/mi
1:09:55
↑ 67↓ 78
20K· 12.43 mi
7:37/mi
1:33:34
↑ 106↓ 860.1%
Half· 13.11 mi
7:36/mi
1:38:45
↑ 19↓ 370.5%
25K· 15.53 mi
8:00/mi
1:58:09
↑ 66↓ 880.2%
30K· 18.64 mi
8:35/mi
2:24:50
↑ 181↓ 1480.2%
20M
10:02/mi
2:38:28
↑ 64↓ 500.2%
21M
10:02/mi
2:48:30
↑ 106↓ 241.6%
35K· 21.75 mi
9:15/mi
2:55:25
↑ 17↓ 861.7%
23M
10:42/mi
3:08:49
↑ 23↓ 630.6%
24M
10:19/mi
3:19:08
↓ 821.3%
40K· 24.85 mi
10:20/mi
3:27:58
↓ 200.3%
25.2M
12:34/mi
3:32:18
↑ 13↓ 160.2%
Finish· 26.22 mi
10:47/mi
3:43:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:45
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time2:04:32
Pace9:30 /mi
📊Positive Split: 26.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5923:377:3623:37
7:36
-
10K
6.21 mi11:14:0246:407:3123:03
7:25
-0:11
15K
9.32 mi11:37:171:09:557:3023:15
7:29
+0:04
20K
12.43 mi12:00:561:33:347:3223:39
7:37
+0:08
Half
13.11 mi12:06:071:38:457:325:11
7:36
-0:01
25K
15.53 mi12:25:311:58:097:3619:24
8:00
+0:24
30K
18.64 mi12:52:122:24:507:4626:41
8:35
+0:35
20M
20.00 mi13:05:502:38:287:5513:38
10:02
+1:27
21M
21.00 mi13:15:522:48:308:0110:02
10:02
0:00
35K
21.75 mi13:22:472:55:258:046:55
9:15
-0:47
23M
23.00 mi13:36:113:08:498:1313:24
10:42
+1:27
24M
24.00 mi13:46:303:19:088:1810:19
10:19
-0:23
40K
24.85 mi13:55:203:27:588:228:50
10:20
+0:01
25.2M
25.20 mi13:59:403:32:188:254:20
12:34
+2:14
Finish
26.22 mi14:10:393:43:178:3110:59
10:47
-1:47

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

7:25 /mi

Average Pace

8:31 /mi

Slowest Pace

12:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:09

53% of race

Time at Steady Pace

33:36

15% of race

Time at Slower Pace

1:11:32

32% of race

Average Pace: 8:31 /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 mi10:50:5923:377:3623:37
7:36
#10551
10K
6.21 mi11:14:0246:407:3123:03
7:25
#10133
15K
9.32 mi11:37:171:09:557:3023:15
7:29
#10066
20K
12.43 mi12:00:561:33:347:3223:39
7:37
#10079
Half
13.11 mi12:06:071:38:457:325:11
7:36
#10127
25K
15.53 mi12:25:311:58:097:3619:24
8:00
#10531
30K
18.64 mi12:52:122:24:507:4626:41
8:35
#11338
20M
20.00 mi13:05:502:38:287:5513:38
10:02
#12411
21M
21.00 mi13:15:522:48:308:0110:02
10:02
#12849
35K
21.75 mi13:22:472:55:258:046:55
9:15
#13139
23M
23.00 mi13:36:113:08:498:1313:24
10:42
#14021
24M
24.00 mi13:46:303:19:088:1810:19
10:19
#14555
40K
24.85 mi13:55:203:27:588:228:50
10:20
#14898
25.2M
25.20 mi13:59:403:32:188:254:20
12:34
#15164
Finish
26.22 mi14:10:393:43:178:3110:59
10:47
#15751
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 mi105518433843310046(Top 38%)8172(Top 54%)8172(Top 398%)
10K6.21 mi3.10 mi10133+4188227+2068227+2069798(Top 37%)8060(Top 53%)8060(Top 393%)
15K9.32 mi3.11 mi10066+678204+238204+2310046(Top 38%)8172(Top 54%)8172(Top 398%)
20K12.43 mi3.11 mi10079-138197+78197+710178(Top 38%)8176(Top 54%)8176(Top 398%)
Half13.11 mi0.68 mi10127-488217-208217-2010998(Top 41%)8637(Top 57%)8637(Top 421%)
25K15.53 mi2.42 mi10531-4048408-1918408-19112747(Top 48%)9248(Top 61%)9248(Top 451%)
30K18.64 mi3.11 mi11338-8078718-3108718-31014849(Top 56%)9990(Top 66%)9990(Top 487%)
20M20.00 mi1.36 mi12411-10739175-4579175-45720582(Top 77%)12379(Top 82%)12379(Top 603%)
21M21.00 mi1.00 mi12849-4389331-1569331-15618129(Top 68%)11269(Top 74%)11269(Top 549%)
35K21.75 mi0.75 mi13139-2909446-1159446-11518899(Top 71%)11534(Top 76%)11534(Top 562%)
23M23.00 mi1.25 mi14021-8829765-3199765-31921751(Top 82%)12789(Top 84%)12789(Top 623%)
24M24.00 mi1.00 mi14555-5349954-1899954-18921584(Top 81%)12670(Top 83%)12670(Top 617%)
40K24.85 mi0.85 mi14898-34310061-10710061-10720801(Top 78%)12284(Top 81%)12284(Top 599%)
25.2M25.20 mi0.35 mi15164-26610160-9910160-9923357(Top 88%)13468(Top 89%)13468(Top 656%)
Finish26.22 mi1.02 mi15751-58710386-22610386-22623554(Top 88%)13594(Top 90%)13594(Top 662%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10046

Males

8172

M50-54

8172

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

9798

Males

8060

M50-54

8060

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10046

Males

8172

M50-54

8172

15K→20K

9.3 - 12.4 mi

Top 38%
×5story building
+106ft-86ft

Overall

10178

Males

8176

M50-54

8176

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

10998

Males

8637

M50-54

8637

Half→25K

13.1 - 15.5 mi

Top 48%
×4story building
+66ft-88ft

Overall

12747

Males

9248

M50-54

9248

25K→30K

15.5 - 18.6 mi

Top 56%
×9story building
+181ft-148ft

Overall

14849

Males

9990

M50-54

9990

30K→20M

18.6 - 20.0 mi

Top 77%
×5story building
+64ft-50ft

Overall

20582

Males

12379

M50-54

12379

20M→21M

20.0 - 21.0 mi

Top 68%
×8story building
+106ft-24ft

Overall

18129

Males

11269

M50-54

11269

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

18899

Males

11534

M50-54

11534

35K→23M

21.8 - 23.0 mi

Top 82%
×5story building
+23ft-63ft

Overall

21751

Males

12789

M50-54

12789

23M→24M

23.0 - 24.0 mi

Top 81%
×6story building
+12ft-82ft

Overall

21584

Males

12670

M50-54

12670

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20801

Males

12284

M50-54

12284

40K→25.2M

24.9 - 25.2 mi

Top 88%
×1story
+13ft-16ft

Overall

23357

Males

13468

M50-54

13468

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2story building
+22ft-21ft

Overall

23554

Males

13594

M50-54

13594

Passing Analysis

Category:
Athletes Passed
1113*
Passed By
6313
Net Change
-5200
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10551
5K → 10K556*138+418#10551#10133
10K → 15K207140+67#10133#10066
15K → 20K167*180-13#10066#10079
20K → Half2169-48#10079#10127
Half → 25K44448-404#10127#10531
25K → 30K43850-807#10531#11338
30K → 20M61079-1073#11338#12411
20M → 21M21459-438#12411#12849
21M → 35K9299-290#12849#13139
35K → 23M7889-882#13139#14021
23M → 24M10544-534#14021#14555
24M → 40K12355-343#14555#14898
40K → 25.2M3269-266#14898#15164
25.2M → Finish7594-587#15164#15751
TOTALS1113*6313-5200

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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