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BOSTON MARATHON 2023

Nate Simpson

Bib: 11587•M

ON

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 40%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 44%
Division (M50-54)
#0 / 2052
Top 45%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:21
Rank: #9753
Start → 5K
23:21 | 7:31/mi
10K· 6.21 mi
46:26
Rank: #9766 (-13)
5K → 10K
23:05 | 7:26/mi
15K· 9.32 mi
1:09:33
Rank: #9700 (+66)
10K → 15K
23:07 | 7:26/mi
20K· 12.43 mi
1:32:45
Rank: #9519 (+181)
15K → 20K
23:12 | 7:28/mi
Half· 13.11 mi
1:37:50
Rank: #9533 (-14)
20K → Half
5:05 | 7:27/mi
25K· 15.53 mi
1:56:27
Rank: #9618 (-85)
Half → 25K
18:37 | 7:41/mi
30K· 18.64 mi
2:20:28
Rank: #9447 (+171)
25K → 30K
24:01 | 7:44/mi
20M
2:31:04
Rank: #9387 (+60)
30K → 20M
10:36 | 7:48/mi
21M
2:39:24
Rank: #9348 (+39)
20M → 21M
8:20 | 8:20/mi
35K· 21.75 mi
2:45:24
Rank: #9451 (-103)
21M → 35K
6:00 | 8:01/mi
23M
2:58:41
Rank: #10555 (-1104)
35K → 23M
13:17 | 10:37/mi
24M
3:06:51
Rank: #10625 (-70)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
3:13:52
Rank: #10626 (-1)
24M → 40K
7:01 | 8:12/mi
25.2M
3:16:55
Rank: #10635 (-9)
40K → 25.2M
3:03 | 8:51/mi
Finish· 26.22 mi
3:25:02
Rank: #10659 (-24)
25.2M → Finish
8:07 | 7:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:50
Pace7:28 /mi
2nd Half
Distance13.11 mi
Time1:47:12
Pace8:11 /mi
📊Positive Split: 9.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:1823:217:3123:21
7:31
-
10K
6.21 mi11:13:2346:267:2823:05
7:26
-0:05
15K
9.32 mi11:36:301:09:337:2823:07
7:26
0:00
20K
12.43 mi11:59:421:32:457:2823:12
7:28
+0:02
Half
13.11 mi12:04:471:37:507:285:05
7:27
-0:01
25K
15.53 mi12:23:241:56:277:3018:37
7:41
+0:14
30K
18.64 mi12:47:252:20:287:3224:01
7:44
+0:03
20M
20.00 mi12:58:012:31:047:3310:36
7:48
+0:04
21M
21.00 mi13:06:212:39:247:358:20
8:20
+0:32
35K
21.75 mi13:12:212:45:247:366:00
8:01
-0:19
23M
23.00 mi13:25:382:58:417:4613:17
10:37
+2:36
24M
24.00 mi13:33:483:06:517:478:10
8:10
-2:27
40K
24.85 mi13:40:493:13:527:487:01
8:12
+0:02
25.2M
25.20 mi13:43:523:16:557:493:03
8:51
+0:39
Finish
26.22 mi13:51:593:25:027:508:07
7:58
-0:53

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

7:26 /mi

Average Pace

7:50 /mi

Slowest Pace

10:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:53:21

85% of race

Time at Slower Pace

31:41

15% of race

Average Pace: 7:49 /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 mi10:50:1823:217:3123:21
7:31
#9753
10K
6.21 mi11:13:2346:267:2823:05
7:26
#9766
15K
9.32 mi11:36:301:09:337:2823:07
7:26
#9700
20K
12.43 mi11:59:421:32:457:2823:12
7:28
#9519
Half
13.11 mi12:04:471:37:507:285:05
7:27
#9533
25K
15.53 mi12:23:241:56:277:3018:37
7:41
#9618
30K
18.64 mi12:47:252:20:287:3224:01
7:44
#9447
20M
20.00 mi12:58:012:31:047:3310:36
7:48
#9387
21M
21.00 mi13:06:212:39:247:358:20
8:20
#9348
35K
21.75 mi13:12:212:45:247:366:00
8:01
#9451
23M
23.00 mi13:25:382:58:417:4613:17
10:37
#10555
24M
24.00 mi13:33:483:06:517:478:10
8:10
#10625
40K
24.85 mi13:40:493:13:527:487:01
8:12
#10626
25.2M
25.20 mi13:43:523:16:557:493:03
8:51
#10635
Finish
26.22 mi13:51:593:25:027:508:07
7:58
#10659
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi9753801180119686(Top 36%)7972(Top 53%)7972(Top 388%)
10K6.21 mi3.10 mi9766-138025-148025-149882(Top 37%)8107(Top 53%)8107(Top 395%)
15K9.32 mi3.11 mi9700+667977+487977+489686(Top 36%)7972(Top 53%)7972(Top 388%)
20K12.43 mi3.11 mi9519+1817872+1057872+1059050(Top 34%)7531(Top 50%)7531(Top 367%)
Half13.11 mi0.68 mi9533-147878-67878-69804(Top 37%)7997(Top 53%)7997(Top 390%)
25K15.53 mi2.42 mi9618-857910-327910-3210130(Top 38%)8064(Top 53%)8064(Top 393%)
30K18.64 mi3.11 mi9447+1717766+1447766+1448868(Top 33%)7203(Top 47%)7203(Top 351%)
20M20.00 mi1.36 mi9387+607708+587708+588860(Top 33%)7119(Top 47%)7119(Top 347%)
21M21.00 mi1.00 mi9348+397664+447664+449413(Top 35%)7300(Top 48%)7300(Top 356%)
35K21.75 mi0.75 mi9451-1037711-477711-4712220(Top 46%)8638(Top 57%)8638(Top 421%)
23M23.00 mi1.25 mi10555-11048259-5488259-54821568(Top 81%)12715(Top 84%)12715(Top 620%)
24M24.00 mi1.00 mi10625-708271-128271-1212338(Top 46%)8549(Top 56%)8549(Top 417%)
40K24.85 mi0.85 mi10626-18238+338238+3311376(Top 43%)8010(Top 53%)8010(Top 390%)
25.2M25.20 mi0.35 mi10635-98235+38235+311516(Top 43%)8030(Top 53%)8030(Top 391%)
Finish26.22 mi1.02 mi10659-248229+68229+611827(Top 44%)8189(Top 54%)8189(Top 399%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9686

Males

7972

M50-54

7972

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

9882

Males

8107

M50-54

8107

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9686

Males

7972

M50-54

7972

15K→20K

9.3 - 12.4 mi

Top 34%
×5stories
+106ft-86ft

Overall

9050

Males

7531

M50-54

7531

20K→Half

12.4 - 13.1 mi

Top 37%
×2stories
+19ft-37ft

Overall

9804

Males

7997

M50-54

7997

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10130

Males

8064

M50-54

8064

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8868

Males

7203

M50-54

7203

30K→20M

18.6 - 20.0 mi

Top 33%
×5stories
+64ft-50ft

Overall

8860

Males

7119

M50-54

7119

20M→21M

20.0 - 21.0 mi

Top 35%
×8stories
+106ft-24ft

Overall

9413

Males

7300

M50-54

7300

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12220

Males

8638

M50-54

8638

35K→23M

21.8 - 23.0 mi

Top 81%
×5stories
+23ft-63ft

Overall

21568

Males

12715

M50-54

12715

23M→24M

23.0 - 24.0 mi

Top 46%
×6stories
+12ft-82ft

Overall

12338

Males

8549

M50-54

8549

24M→40K

24.0 - 24.9 mi

Top 43%
×1story
+6ft-20ft

Overall

11376

Males

8010

M50-54

8010

40K→25.2M

24.9 - 25.2 mi

Top 43%
×1story
+13ft-16ft

Overall

11516

Males

8030

M50-54

8030

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

11827

Males

8189

M50-54

8189

Passing Analysis

Category:
Athletes Passed
1559*
Passed By
2463
Net Change
-906
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9753
5K → 10K306319-13#9753#9766
10K → 15K200134+66#9766#9700
15K → 20K23756+181#9700#9519
20K → Half2034-14#9519#9533
Half → 25K101186-85#9533#9618
25K → 30K250*79+171#9618#9447
30K → 20M11151+60#9447#9387
20M → 21M10162+39#9387#9348
21M → 35K26129-103#9348#9451
35K → 23M41106-1104#9451#10555
23M → 24M45115-70#10555#10625
24M → 40K7071-1#10625#10626
40K → 25.2M2837-9#10626#10635
25.2M → Finish6084-24#10635#10659
TOTALS1559*2463-906

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

📊

Passing Visuals

Category:
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🔥Passing Intensity

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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