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BOSTON MARATHON 2023

James Irons

Bib: 20645•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
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
8:31/mi
26:27
↑ 97↓ 3451.5%
10K· 6.21 mi
8:44/mi
53:36
↑ 79↓ 1380.4%
15K· 9.32 mi
8:46/mi
1:20:50
↑ 67↓ 78
20K· 12.43 mi
9:01/mi
1:48:51
↑ 106↓ 860.1%
Half· 13.11 mi
8:59/mi
1:54:59
↑ 19↓ 370.5%
25K· 15.53 mi
9:02/mi
2:16:53
↑ 66↓ 880.2%
30K· 18.64 mi
9:27/mi
2:46:14
↑ 181↓ 1480.2%
20M
9:27/mi
2:59:04
↑ 64↓ 500.2%
21M
9:52/mi
3:08:56
↑ 106↓ 241.6%
35K· 21.75 mi
9:13/mi
3:15:50
↑ 17↓ 861.7%
23M
9:36/mi
3:27:51
↑ 23↓ 630.6%
24M
9:21/mi
3:37:12
↓ 821.3%
40K· 24.85 mi
9:40/mi
3:45:28
↓ 200.3%
25.2M
10:12/mi
3:48:59
↑ 13↓ 160.2%
Finish· 26.22 mi
9:07/mi
3:58:16
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:59
Pace8:46 /mi
2nd Half
Distance13.11 mi
Time2:03:17
Pace9:24 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1726:278:3126:27
8:31
-
10K
6.21 mi11:47:2653:368:3827:09
8:44
+0:13
15K
9.32 mi12:14:401:20:508:4027:14
8:46
+0:02
20K
12.43 mi12:42:411:48:518:4628:01
9:01
+0:15
Half
13.11 mi12:48:491:54:598:466:08
8:59
-0:02
25K
15.53 mi13:10:432:16:538:4921:54
9:02
+0:03
30K
18.64 mi13:40:042:46:148:5529:21
9:27
+0:25
20M
20.00 mi13:52:542:59:048:5712:50
9:27
0:00
21M
21.00 mi14:02:463:08:569:009:52
9:52
+0:25
35K
21.75 mi14:09:403:15:509:006:54
9:13
-0:39
23M
23.00 mi14:21:413:27:519:0212:01
9:36
+0:23
24M
24.00 mi14:31:023:37:129:039:21
9:21
-0:15
40K
24.85 mi14:39:183:45:289:048:16
9:40
+0:19
25.2M
25.20 mi14:42:493:48:599:053:31
10:12
+0:32
Finish
26.22 mi14:52:063:58:169:069:17
9:07
-1:05

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

8:31 /mi

Average Pace

9:06 /mi

Slowest Pace

10:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:42:25

68% of race

Time at Steady Pace

1:12:20

30% of race

Time at Slower Pace

3:31

1% of race

Average Pace: 9:05 /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 mi11:20:1726:278:3126:27
8:31
#17639
10K
6.21 mi11:47:2653:368:3827:09
8:44
#18663
15K
9.32 mi12:14:401:20:508:4027:14
8:46
#18881
20K
12.43 mi12:42:411:48:518:4628:01
9:01
#19108
Half
13.11 mi12:48:491:54:598:466:08
8:59
#19176
25K
15.53 mi13:10:432:16:538:4921:54
9:02
#19149
30K
18.64 mi13:40:042:46:148:5529:21
9:27
#19199
20M
20.00 mi13:52:542:59:048:5712:50
9:27
#19132
21M
21.00 mi14:02:463:08:569:009:52
9:52
#19040
35K
21.75 mi14:09:403:15:509:006:54
9:13
#19027
23M
23.00 mi14:21:413:27:519:0212:01
9:36
#19018
24M
24.00 mi14:31:023:37:129:039:21
9:21
#19005
40K
24.85 mi14:39:183:45:289:048:16
9:40
#19001
25.2M
25.20 mi14:42:493:48:599:053:31
10:12
#18992
Finish
26.22 mi14:52:063:58:169:069:17
9:07
#18998
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi17639112851128519324(Top 73%)12020(Top 79%)12020(Top 1083%)
10K6.21 mi3.10 mi18663-102411720-43511720-43519620(Top 74%)12136(Top 80%)12136(Top 1093%)
15K9.32 mi3.11 mi18881-21811805-8511805-8519324(Top 73%)12020(Top 79%)12020(Top 1083%)
20K12.43 mi3.11 mi19108-22711909-10411909-10419781(Top 74%)12215(Top 80%)12215(Top 1100%)
Half13.11 mi0.68 mi19176-6811935-2611935-2620362(Top 76%)12448(Top 82%)12448(Top 1121%)
25K15.53 mi2.42 mi19149+2711922+1311922+1319120(Top 72%)11900(Top 78%)11900(Top 1072%)
30K18.64 mi3.11 mi19199-5011923-111923-119238(Top 72%)11893(Top 78%)11893(Top 1071%)
20M20.00 mi1.36 mi19132+6711881+4211881+4218629(Top 70%)11513(Top 76%)11513(Top 1037%)
21M21.00 mi1.00 mi19040+9211827+5411827+5417501(Top 66%)11002(Top 72%)11002(Top 991%)
35K21.75 mi0.75 mi19027+1311814+1311814+1318824(Top 71%)11511(Top 76%)11511(Top 1037%)
23M23.00 mi1.25 mi19018+911804+1011804+1018712(Top 70%)11447(Top 75%)11447(Top 1031%)
24M24.00 mi1.00 mi19005+1311783+2111783+2118640(Top 70%)11375(Top 75%)11375(Top 1025%)
40K24.85 mi0.85 mi19001+411779+411779+418905(Top 71%)11443(Top 75%)11443(Top 1031%)
25.2M25.20 mi0.35 mi18992+911773+611773+618090(Top 68%)11073(Top 73%)11073(Top 998%)
Finish26.22 mi1.02 mi18998-611767+611767+618496(Top 69%)11309(Top 75%)11309(Top 1019%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 73%
×21story building
+97ft-345ft

Overall

19324

Males

12020

M60-64

12020

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

19620

Males

12136

M60-64

12136

10K→15K

6.2 - 9.3 mi

Top 73%
×3story building
+67ft-78ft

Overall

19324

Males

12020

M60-64

12020

15K→20K

9.3 - 12.4 mi

Top 74%
×5story building
+106ft-86ft

Overall

19781

Males

12215

M60-64

12215

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

20362

Males

12448

M60-64

12448

Half→25K

13.1 - 15.5 mi

Top 72%
×4story building
+66ft-88ft

Overall

19120

Males

11900

M60-64

11900

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

19238

Males

11893

M60-64

11893

30K→20M

18.6 - 20.0 mi

Top 70%
×5story building
+64ft-50ft

Overall

18629

Males

11513

M60-64

11513

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

17501

Males

11002

M60-64

11002

21M→35K

21.0 - 21.8 mi

Top 71%
×7story building
+17ft-86ft

Overall

18824

Males

11511

M60-64

11511

35K→23M

21.8 - 23.0 mi

Top 70%
×5story building
+23ft-63ft

Overall

18712

Males

11447

M60-64

11447

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18640

Males

11375

M60-64

11375

24M→40K

24.0 - 24.9 mi

Top 71%
×1story
+6ft-20ft

Overall

18905

Males

11443

M60-64

11443

40K→25.2M

24.9 - 25.2 mi

Top 68%
×1story
+13ft-16ft

Overall

18090

Males

11073

M60-64

11073

25.2M→Finish

25.2 - 26.2 mi

Top 69%
×2story building
+22ft-21ft

Overall

18496

Males

11309

M60-64

11309

Passing Analysis

Category:
Athletes Passed
1099
Passed By
2458
Net Change
-1359
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17639
5K → 10K561080-1024#17639#18663
10K → 15K102320-218#18663#18881
15K → 20K94321-227#18881#19108
20K → Half876-68#19108#19176
Half → 25K12396+27#19176#19149
25K → 30K155205-50#19149#19199
30K → 20M11952+67#19199#19132
20M → 21M12432+92#19132#19040
21M → 35K4431+13#19040#19027
35K → 23M8576+9#19027#19018
23M → 24M6552+13#19018#19005
24M → 40K5349+4#19005#19001
40K → 25.2M2819+9#19001#18992
25.2M → Finish4349-6#18992#18998
TOTALS10992458-1359
📊

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