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BOSTON MARATHON 2023

James Larson

Bib: 17669•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
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
25:31
Rank: #15543
Start → 5K
8:13/mi
25:31 split
10K· 6.21 mi
50:04
Rank: #14794 (+749)
5K → 10K
7:54/mi
24:33 split
15K· 9.32 mi
1:14:48
Rank: #14527 (+267)
10K → 15K
7:58/mi
24:44 split
20K· 12.43 mi
1:39:26
Rank: #14113 (+414)
15K → 20K
7:56/mi
24:38 split
Half· 13.11 mi
1:44:45
Rank: #14033 (+80)
20K → Half
7:48/mi
5:19 split
25K· 15.53 mi
2:04:06
Rank: #13775 (+258)
Half → 25K
7:59/mi
19:21 split
30K· 18.64 mi
2:29:45
Rank: #13543 (+232)
25K → 30K
8:15/mi
25:39 split
20M
2:41:06
Rank: #13463 (+80)
30K → 20M
8:21/mi
11:21 split
21M
2:49:59
Rank: #13403 (+60)
20M → 21M
8:53/mi
8:53 split
35K· 21.75 mi
2:56:03
Rank: #13365 (+38)
21M → 35K
8:07/mi
6:04 split
23M
3:06:43
Rank: #13339 (+26)
35K → 23M
8:31/mi
10:40 split
24M
3:15:06
Rank: #13333 (+6)
23M → 24M
8:23/mi
8:23 split
40K· 24.85 mi
3:22:37
Rank: #13389 (-56)
24M → 40K
8:47/mi
7:31 split
25.2M
3:25:49
Rank: #13385 (+4)
40K → 25.2M
9:17/mi
3:12 split
Finish· 26.22 mi
3:34:43
Rank: #13555 (-170)
25.2M → Finish
8:44/mi
8:54 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:45
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:49:58
Pace8:23 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:4425:318:1325:31
8:13
-
10K
6.21 mi11:42:1750:048:0324:33
7:54
-0:19
15K
9.32 mi12:07:011:14:488:0224:44
7:58
+0:04
20K
12.43 mi12:31:391:39:268:0024:38
7:56
-0:02
Half
13.11 mi12:36:581:44:457:595:19
7:48
-0:08
25K
15.53 mi12:56:192:04:067:5919:21
7:59
+0:11
30K
18.64 mi13:21:582:29:458:0225:39
8:15
+0:16
20M
20.00 mi13:33:192:41:068:0311:21
8:21
+0:06
21M
21.00 mi13:42:122:49:598:068:53
8:53
+0:32
35K
21.75 mi13:48:162:56:038:066:04
8:07
-0:46
23M
23.00 mi13:58:563:06:438:0710:40
8:31
+0:24
24M
24.00 mi14:07:193:15:068:088:23
8:23
-0:08
40K
24.85 mi14:14:503:22:378:097:31
8:47
+0:24
25.2M
25.20 mi14:18:023:25:498:103:12
9:17
+0:30
Finish
26.22 mi14:26:563:34:438:128:54
8:44
-0:33

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

7:48 /mi

Average Pace

8:12 /mi

Slowest Pace

9:17 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:06:13

87% of race

Time at Steady Pace

25:18

12% of race

Time at Slower Pace

3:12

1% of race

Average Pace: 8:11 /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 mi11:17:4425:318:1325:31
8:13
#15543
10K
6.21 mi11:42:1750:048:0324:33
7:54
#14794
15K
9.32 mi12:07:011:14:488:0224:44
7:58
#14527
20K
12.43 mi12:31:391:39:268:0024:38
7:56
#14113
Half
13.11 mi12:36:581:44:457:595:19
7:48
#14033
25K
15.53 mi12:56:192:04:067:5919:21
7:59
#13775
30K
18.64 mi13:21:582:29:458:0225:39
8:15
#13543
20M
20.00 mi13:33:192:41:068:0311:21
8:21
#13463
21M
21.00 mi13:42:122:49:598:068:53
8:53
#13403
35K
21.75 mi13:48:162:56:038:066:04
8:07
#13365
23M
23.00 mi13:58:563:06:438:0710:40
8:31
#13339
24M
24.00 mi14:07:193:15:068:088:23
8:23
#13333
40K
24.85 mi14:14:503:22:378:097:31
8:47
#13389
25.2M
25.20 mi14:18:023:25:498:103:12
9:17
#13385
Finish
26.22 mi14:26:563:34:438:128:54
8:44
#13555
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi15543105261052614060(Top 53%)9921(Top 65%)9921(Top 894%)
10K6.21 mi3.10 mi14794+74910253+27310253+27313997(Top 53%)9939(Top 65%)9939(Top 895%)
15K9.32 mi3.11 mi14527+26710139+11410139+11414060(Top 53%)9921(Top 65%)9921(Top 894%)
20K12.43 mi3.11 mi14113+4149943+1969943+19612855(Top 48%)9370(Top 62%)9370(Top 844%)
Half13.11 mi0.68 mi14033+809910+339910+3312617(Top 47%)9342(Top 62%)9342(Top 842%)
25K15.53 mi2.42 mi13775+2589785+1259785+12512577(Top 47%)9160(Top 60%)9160(Top 825%)
30K18.64 mi3.11 mi13543+2329660+1259660+12512718(Top 48%)9110(Top 60%)9110(Top 821%)
20M20.00 mi1.36 mi13463+809609+519609+5112692(Top 48%)9001(Top 59%)9001(Top 811%)
21M21.00 mi1.00 mi13403+609567+429567+4212742(Top 48%)8917(Top 59%)8917(Top 803%)
35K21.75 mi0.75 mi13365+389539+289539+2812825(Top 48%)8912(Top 59%)8912(Top 803%)
23M23.00 mi1.25 mi13339+269505+349505+3413343(Top 50%)9066(Top 60%)9066(Top 817%)
24M24.00 mi1.00 mi13333+69480+259480+2513741(Top 52%)9200(Top 61%)9200(Top 829%)
40K24.85 mi0.85 mi13389-569476+49476+415014(Top 56%)9687(Top 64%)9687(Top 873%)
25.2M25.20 mi0.35 mi13385+49467+99467+914024(Top 53%)9242(Top 61%)9242(Top 833%)
Finish26.22 mi1.02 mi13555-1709518-519518-5116643(Top 63%)10442(Top 69%)10442(Top 941%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 53%
×21story building
+97ft-345ft

Overall

14060

Males

9921

M60-64

9921

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

13997

Males

9939

M60-64

9939

10K→15K

6.2 - 9.3 mi

Top 53%
×3story building
+67ft-78ft

Overall

14060

Males

9921

M60-64

9921

15K→20K

9.3 - 12.4 mi

Top 48%
×5story building
+106ft-86ft

Overall

12855

Males

9370

M60-64

9370

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

12617

Males

9342

M60-64

9342

Half→25K

13.1 - 15.5 mi

Top 47%
×4story building
+66ft-88ft

Overall

12577

Males

9160

M60-64

9160

25K→30K

15.5 - 18.6 mi

Top 48%
×9story building
+181ft-148ft

Overall

12718

Males

9110

M60-64

9110

30K→20M

18.6 - 20.0 mi

Top 48%
×5story building
+64ft-50ft

Overall

12692

Males

9001

M60-64

9001

20M→21M

20.0 - 21.0 mi

Top 48%
×8story building
+106ft-24ft

Overall

12742

Males

8917

M60-64

8917

21M→35K

21.0 - 21.8 mi

Top 48%
×7story building
+17ft-86ft

Overall

12825

Males

8912

M60-64

8912

35K→23M

21.8 - 23.0 mi

Top 50%
×5story building
+23ft-63ft

Overall

13343

Males

9066

M60-64

9066

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

13741

Males

9200

M60-64

9200

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15014

Males

9687

M60-64

9687

40K→25.2M

24.9 - 25.2 mi

Top 53%
×1story
+13ft-16ft

Overall

14024

Males

9242

M60-64

9242

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

16643

Males

10442

M60-64

10442

Passing Analysis

Category:
Athletes Passed
2898
Passed By
910
Net Change
+1988
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#15543
5K → 10K82879+749#15543#14794
10K → 15K34982+267#14794#14527
15K → 20K44329+414#14527#14113
20K → Half877+80#14113#14033
Half → 25K28426+258#14033#13775
25K → 30K30068+232#13775#13543
30K → 20M13151+80#13543#13463
20M → 21M11757+60#13463#13403
21M → 35K7234+38#13403#13365
35K → 23M10983+26#13365#13339
23M → 24M6862+6#13339#13333
24M → 40K48104-56#13333#13389
40K → 25.2M3026+4#13389#13385
25.2M → Finish32202-170#13385#13555
TOTALS2898910+1988
📊

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