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BOSTON MARATHON 2023

James Heinzen

Bib: 21961•M

PA

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
9:00/mi
27:57
↑ 97↓ 3451.5%
10K· 6.21 mi
9:04/mi
56:06
↑ 79↓ 1380.4%
15K· 9.32 mi
9:03/mi
1:24:13
↑ 67↓ 78
20K· 12.43 mi
9:28/mi
1:53:37
↑ 106↓ 860.1%
Half· 13.11 mi
8:55/mi
1:59:42
↑ 19↓ 370.5%
25K· 15.53 mi
9:17/mi
2:22:13
↑ 66↓ 880.2%
30K· 18.64 mi
9:50/mi
2:52:45
↑ 181↓ 1480.2%
20M
10:03/mi
3:06:25
↑ 64↓ 500.2%
21M
11:00/mi
3:17:25
↑ 106↓ 241.6%
35K· 21.75 mi
10:10/mi
3:25:01
↑ 17↓ 861.7%
23M
9:49/mi
3:37:18
↑ 23↓ 630.6%
24M
9:38/mi
3:46:56
↓ 821.3%
40K· 24.85 mi
9:56/mi
3:55:26
↓ 200.3%
25.2M
10:29/mi
3:59:03
↑ 13↓ 160.2%
Finish· 26.22 mi
9:44/mi
4:08:58
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:42
Pace9:08 /mi
2nd Half
Distance13.11 mi
Time2:09:16
Pace9:52 /mi
📊Positive Split: 8.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:21:4127:579:0027:57
9:00
-
10K
6.21 mi11:49:5056:069:0228:09
9:04
+0:04
15K
9.32 mi12:17:571:24:139:0228:07
9:03
-0:01
20K
12.43 mi12:47:211:53:379:0929:24
9:28
+0:25
Half
13.11 mi12:53:261:59:429:086:05
8:55
-0:33
25K
15.53 mi13:15:572:22:139:0922:31
9:17
+0:22
30K
18.64 mi13:46:292:52:459:1630:32
9:50
+0:33
20M
20.00 mi14:00:093:06:259:1913:40
10:03
+0:13
21M
21.00 mi14:11:093:17:259:2411:00
11:00
+0:57
35K
21.75 mi14:18:453:25:019:267:36
10:10
-0:50
23M
23.00 mi14:31:023:37:189:2712:17
9:49
-0:21
24M
24.00 mi14:40:403:46:569:279:38
9:38
-0:11
40K
24.85 mi14:49:103:55:269:288:30
9:56
+0:18
25.2M
25.20 mi14:52:473:59:039:293:37
10:29
+0:33
Finish
26.22 mi15:02:424:08:589:309:55
9:44
-0:45

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

8:55 /mi

Average Pace

9:30 /mi

Slowest Pace

11:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:52:49

45% of race

Time at Steady Pace

1:40:16

40% of race

Time at Slower Pace

35:53

14% of race

Average Pace: 9:30 /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 mi11:21:4127:579:0027:57
9:00
#20422
10K
6.21 mi11:49:5056:069:0228:09
9:04
#20755
15K
9.32 mi12:17:571:24:139:0228:07
9:03
#20727
20K
12.43 mi12:47:211:53:379:0929:24
9:28
#20960
Half
13.11 mi12:53:261:59:429:086:05
8:55
#20906
25K
15.53 mi13:15:572:22:139:0922:31
9:17
#20783
30K
18.64 mi13:46:292:52:459:1630:32
9:50
#20695
20M
20.00 mi14:00:093:06:259:1913:40
10:03
#20664
21M
21.00 mi14:11:093:17:259:2411:00
11:00
#20686
35K
21.75 mi14:18:453:25:019:267:36
10:10
#20721
23M
23.00 mi14:31:023:37:189:2712:17
9:49
#20615
24M
24.00 mi14:40:403:46:569:279:38
9:38
#20580
40K
24.85 mi14:49:103:55:269:288:30
9:56
#20548
25.2M
25.20 mi14:52:473:59:039:293:37
10:29
#20511
Finish
26.22 mi15:02:424:08:589:309:55
9:44
#20531
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi20422123361233620722(Top 78%)12624(Top 83%)12624(Top 1137%)
10K6.21 mi3.10 mi20755-33312561-22512561-22521114(Top 79%)12760(Top 84%)12760(Top 1150%)
15K9.32 mi3.11 mi20727+2812568-712568-720722(Top 78%)12624(Top 83%)12624(Top 1137%)
20K12.43 mi3.11 mi20960-23312691-12312691-12321431(Top 81%)12923(Top 85%)12923(Top 1164%)
Half13.11 mi0.68 mi20906+5412672+1912672+1920044(Top 75%)12338(Top 81%)12338(Top 1112%)
25K15.53 mi2.42 mi20783+12312624+4812624+4820158(Top 76%)12353(Top 81%)12353(Top 1113%)
30K18.64 mi3.11 mi20695+8812570+5412570+5420527(Top 77%)12435(Top 82%)12435(Top 1120%)
20M20.00 mi1.36 mi20664+3112531+3912531+3920634(Top 78%)12405(Top 82%)12405(Top 1118%)
21M21.00 mi1.00 mi20686-2212537-612537-620821(Top 78%)12435(Top 82%)12435(Top 1120%)
35K21.75 mi0.75 mi20721-3512540-312540-321668(Top 81%)12781(Top 84%)12781(Top 1151%)
23M23.00 mi1.25 mi20615+10612482+5812482+5819455(Top 73%)11775(Top 78%)11775(Top 1061%)
24M24.00 mi1.00 mi20580+3512452+3012452+3019680(Top 74%)11860(Top 78%)11860(Top 1068%)
40K24.85 mi0.85 mi20548+3212427+2512427+2519807(Top 74%)11837(Top 78%)11837(Top 1066%)
25.2M25.20 mi0.35 mi20511+3712413+1412413+1419044(Top 72%)11500(Top 76%)11500(Top 1036%)
Finish26.22 mi1.02 mi20531-2012405+812405+820894(Top 78%)12374(Top 82%)12374(Top 1115%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

20722

Males

12624

M60-64

12624

5K→10K

3.1 - 6.2 mi

Top 79%
×5story building
+79ft-138ft

Overall

21114

Males

12760

M60-64

12760

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

20722

Males

12624

M60-64

12624

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21431

Males

12923

M60-64

12923

20K→Half

12.4 - 13.1 mi

Top 75%
×2story building
+19ft-37ft

Overall

20044

Males

12338

M60-64

12338

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20158

Males

12353

M60-64

12353

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

20527

Males

12435

M60-64

12435

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

20634

Males

12405

M60-64

12405

20M→21M

20.0 - 21.0 mi

Top 78%
×8story building
+106ft-24ft

Overall

20821

Males

12435

M60-64

12435

21M→35K

21.0 - 21.8 mi

Top 81%
×7story building
+17ft-86ft

Overall

21668

Males

12781

M60-64

12781

35K→23M

21.8 - 23.0 mi

Top 73%
×5story building
+23ft-63ft

Overall

19455

Males

11775

M60-64

11775

23M→24M

23.0 - 24.0 mi

Top 74%
×6story building
+12ft-82ft

Overall

19680

Males

11860

M60-64

11860

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

19807

Males

11837

M60-64

11837

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

19044

Males

11500

M60-64

11500

25.2M→Finish

25.2 - 26.2 mi

Top 78%
×2story building
+22ft-21ft

Overall

20894

Males

12374

M60-64

12374

Passing Analysis

Category:
Athletes Passed
1359
Passed By
1468
Net Change
-109
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20422
5K → 10K153486-333#20422#20755
10K → 15K191163+28#20755#20727
15K → 20K85318-233#20727#20960
20K → Half628+54#20960#20906
Half → 25K16340+123#20906#20783
25K → 30K18698+88#20783#20695
30K → 20M8958+31#20695#20664
20M → 21M6587-22#20664#20686
21M → 35K2964-35#20686#20721
35K → 23M12418+106#20721#20615
23M → 24M6631+35#20615#20580
24M → 40K6230+32#20580#20548
40K → 25.2M458+37#20548#20511
25.2M → Finish3959-20#20511#20531
TOTALS13591468-109
📊

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