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BOSTON MARATHON 2023

Daniel Larson

Bib: 15919•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M70-74)
#0 / 213
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:15
Rank: #21837
Start → 5K
29:15 | 9:25/mi
10K· 6.21 mi
59:32
Rank: #22556 (-719)
5K → 10K
30:17 | 9:45/mi
15K· 9.32 mi
1:29:59
Rank: #22734 (-178)
10K → 15K
30:27 | 9:48/mi
20K· 12.43 mi
2:00:46
Rank: #22718 (+16)
15K → 20K
30:47 | 9:54/mi
Half· 13.11 mi
2:08:00
Rank: #22833 (-115)
20K → Half
7:14 | 10:36/mi
25K· 15.53 mi
2:32:11
Rank: #22705 (+128)
Half → 25K
24:11 | 9:58/mi
30K· 18.64 mi
3:05:22
Rank: #22678 (+27)
25K → 30K
33:11 | 10:41/mi
20M
3:19:16
Rank: #22555 (+123)
30K → 20M
13:54 | 10:14/mi
21M
3:30:51
Rank: #22524 (+31)
20M → 21M
11:35 | 11:35/mi
35K· 21.75 mi
3:38:01
Rank: #22430 (+94)
21M → 35K
7:10 | 9:35/mi
23M
3:50:47
Rank: #22329 (+101)
35K → 23M
12:46 | 10:12/mi
24M
4:00:49
Rank: #22276 (+53)
23M → 24M
10:02 | 10:02/mi
40K· 24.85 mi
4:09:40
Rank: #22224 (+52)
24M → 40K
8:51 | 10:21/mi
25.2M
4:13:35
Rank: #22208 (+16)
40K → 25.2M
3:55 | 11:21/mi
Finish· 26.22 mi
4:23:43
Rank: #22180 (+28)
25.2M → Finish
10:08 | 9:57/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:08:00
Pace9:46 /mi
2nd Half
Distance13.11 mi
Time2:15:43
Pace10:21 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:00:0329:159:2529:15
9:25
-
10K
6.21 mi11:30:2059:329:3530:17
9:45
+0:20
15K
9.32 mi12:00:471:29:599:3930:27
9:48
+0:03
20K
12.43 mi12:31:342:00:469:4330:47
9:54
+0:06
Half
13.11 mi12:38:482:08:009:467:14
10:36
+0:42
25K
15.53 mi13:02:592:32:119:4824:11
9:58
-0:38
30K
18.64 mi13:36:103:05:229:5733:11
10:41
+0:43
20M
20.00 mi13:50:043:19:169:5813:54
10:14
-0:27
21M
21.00 mi14:01:393:30:5110:0211:35
11:35
+1:21
35K
21.75 mi14:08:493:38:0110:017:10
9:35
-2:00
23M
23.00 mi14:21:353:50:4710:0212:46
10:12
+0:37
24M
24.00 mi14:31:374:00:4910:0210:02
10:02
-0:10
40K
24.85 mi14:40:284:09:4010:038:51
10:21
+0:19
25.2M
25.20 mi14:44:234:13:3510:043:55
11:21
+1:00
Finish
26.22 mi14:54:314:23:4310:0410:08
9:57
-1:24

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

9:25 /mi

Average Pace

10:04 /mi

Slowest Pace

11:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

36:25

14% of race

Time at Steady Pace

2:42:32

62% of race

Time at Slower Pace

1:04:46

25% of race

Average Pace: 10:03 /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 mi11:00:0329:159:2529:15
9:25
#21837
10K
6.21 mi11:30:2059:329:3530:17
9:45
#22556
15K
9.32 mi12:00:471:29:599:3930:27
9:48
#22734
20K
12.43 mi12:31:342:00:469:4330:47
9:54
#22718
Half
13.11 mi12:38:482:08:009:467:14
10:36
#22833
25K
15.53 mi13:02:592:32:119:4824:11
9:58
#22705
30K
18.64 mi13:36:103:05:229:5733:11
10:41
#22678
20M
20.00 mi13:50:043:19:169:5813:54
10:14
#22555
21M
21.00 mi14:01:393:30:5110:0211:35
11:35
#22524
35K
21.75 mi14:08:493:38:0110:017:10
9:35
#22430
23M
23.00 mi14:21:353:50:4710:0212:46
10:12
#22329
24M
24.00 mi14:31:374:00:4910:0210:02
10:02
#22276
40K
24.85 mi14:40:284:09:4010:038:51
10:21
#22224
25.2M
25.20 mi14:44:234:13:3510:043:55
11:21
#22208
Finish
26.22 mi14:54:314:23:4310:0410:08
9:57
#22180
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM70-74Seg. OverallSeg. MalesSeg. M70-74
5K3.11 mi3.11 mi21837130111301123045(Top 87%)13652(Top 90%)13652(Top 6409%)
10K6.21 mi3.10 mi22556-71913411-40013411-40023150(Top 87%)13714(Top 90%)13714(Top 6438%)
15K9.32 mi3.11 mi22734-17813511-10013511-10023045(Top 87%)13652(Top 90%)13652(Top 6409%)
20K12.43 mi3.11 mi22718+1613500+1113500+1122663(Top 85%)13469(Top 89%)13469(Top 6323%)
Half13.11 mi0.68 mi22833-11513551-5113551-5124365(Top 92%)14204(Top 94%)14204(Top 6669%)
25K15.53 mi2.42 mi22705+12813473+7813473+7822156(Top 83%)13211(Top 87%)13211(Top 6202%)
30K18.64 mi3.11 mi22678+2713434+3913434+3922570(Top 85%)13326(Top 88%)13326(Top 6256%)
20M20.00 mi1.36 mi22555+12313367+6713367+6721091(Top 79%)12609(Top 83%)12609(Top 5920%)
21M21.00 mi1.00 mi22524+3113349+1813349+1822013(Top 83%)12996(Top 86%)12996(Top 6101%)
35K21.75 mi0.75 mi22430+9413304+4513304+4520092(Top 75%)12093(Top 80%)12093(Top 5677%)
23M23.00 mi1.25 mi22329+10113248+5613248+5620552(Top 77%)12268(Top 81%)12268(Top 5760%)
24M24.00 mi1.00 mi22276+5313224+2413224+2420878(Top 78%)12380(Top 82%)12380(Top 5812%)
40K24.85 mi0.85 mi22224+5213192+3213192+3220868(Top 78%)12319(Top 81%)12319(Top 5784%)
25.2M25.20 mi0.35 mi22208+1613183+913183+921234(Top 80%)12500(Top 82%)12500(Top 5869%)
Finish26.22 mi1.02 mi22180+2813157+2613157+2621604(Top 81%)12673(Top 84%)12673(Top 5950%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 87%
×21stories
+97ft-345ft

Overall

23045

Males

13652

M70-74

13652

5K→10K

3.1 - 6.2 mi

Top 87%
×5stories
+79ft-138ft

Overall

23150

Males

13714

M70-74

13714

10K→15K

6.2 - 9.3 mi

Top 87%
×3stories
+67ft-78ft

Overall

23045

Males

13652

M70-74

13652

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

22663

Males

13469

M70-74

13469

20K→Half

12.4 - 13.1 mi

Top 92%
×2stories
+19ft-37ft

Overall

24365

Males

14204

M70-74

14204

Half→25K

13.1 - 15.5 mi

Top 83%
×4stories
+66ft-88ft

Overall

22156

Males

13211

M70-74

13211

25K→30K

15.5 - 18.6 mi

Top 85%
×9stories
+181ft-148ft

Overall

22570

Males

13326

M70-74

13326

30K→20M

18.6 - 20.0 mi

Top 79%
×5stories
+64ft-50ft

Overall

21091

Males

12609

M70-74

12609

20M→21M

20.0 - 21.0 mi

Top 83%
×8stories
+106ft-24ft

Overall

22013

Males

12996

M70-74

12996

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

20092

Males

12093

M70-74

12093

35K→23M

21.8 - 23.0 mi

Top 77%
×5stories
+23ft-63ft

Overall

20552

Males

12268

M70-74

12268

23M→24M

23.0 - 24.0 mi

Top 78%
×6stories
+12ft-82ft

Overall

20878

Males

12380

M70-74

12380

24M→40K

24.0 - 24.9 mi

Top 78%
×1story
+6ft-20ft

Overall

20868

Males

12319

M70-74

12319

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21234

Males

12500

M70-74

12500

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2stories
+22ft-21ft

Overall

21604

Males

12673

M70-74

12673

Passing Analysis

Category:
Athletes Passed
1183
Passed By
1526
Net Change
-343
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21837
5K → 10K44763-719#21837#22556
10K → 15K90268-178#22556#22734
15K → 20K140124+16#22734#22718
20K → Half5120-115#22718#22833
Half → 25K15931+128#22833#22705
25K → 30K12699+27#22705#22678
30K → 20M1296+123#22678#22555
20M → 21M7140+31#22555#22524
21M → 35K962+94#22524#22430
35K → 23M11211+101#22430#22329
23M → 24M6613+53#22329#22276
24M → 40K6614+52#22276#22224
40K → 25.2M2711+16#22224#22208
25.2M → Finish5224+28#22208#22180
TOTALS11831526-343
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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