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BOSTON MARATHON 2023

Timothy Nelson

Bib: 13765•M

MI

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
24:51
Rank: #14001
Start → 5K
24:51 | 8:00/mi
10K· 6.21 mi
50:05
Rank: #14815 (-814)
5K → 10K
25:14 | 8:07/mi
15K· 9.32 mi
1:16:53
Rank: #16173 (-1358)
10K → 15K
26:48 | 8:38/mi
20K· 12.43 mi
1:42:33
Rank: #15926 (+247)
15K → 20K
25:40 | 8:16/mi
Half· 13.11 mi
1:48:14
Rank: #15958 (-32)
20K → Half
5:41 | 8:20/mi
25K· 15.53 mi
2:10:45
Rank: #16838 (-880)
Half → 25K
22:31 | 9:17/mi
30K· 18.64 mi
2:39:37
Rank: #17134 (-296)
25K → 30K
28:52 | 9:17/mi
20M
2:52:09
Rank: #17182 (-48)
30K → 20M
12:32 | 9:13/mi
21M
3:03:07
Rank: #17498 (-316)
20M → 21M
10:58 | 10:58/mi
35K· 21.75 mi
3:10:16
Rank: #17630 (-132)
21M → 35K
7:09 | 9:33/mi
23M
3:22:30
Rank: #17803 (-173)
35K → 23M
12:14 | 9:46/mi
24M
3:32:02
Rank: #17911 (-108)
23M → 24M
9:32 | 9:32/mi
40K· 24.85 mi
3:40:15
Rank: #17951 (-40)
24M → 40K
8:13 | 9:37/mi
25.2M
3:43:42
Rank: #17948 (+3)
40K → 25.2M
3:27 | 10:00/mi
Finish· 26.22 mi
3:53:13
Rank: #18020 (-72)
25.2M → Finish
9:31 | 9:20/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:14
Pace8:15 /mi
2nd Half
Distance13.11 mi
Time2:04:59
Pace9:32 /mi
📊Positive Split: 15.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:3124:518:0024:51
8:00
-
10K
6.21 mi11:18:4550:058:0425:14
8:07
+0:07
15K
9.32 mi11:45:331:16:538:1526:48
8:38
+0:31
20K
12.43 mi12:11:131:42:338:1525:40
8:16
-0:22
Half
13.11 mi12:16:541:48:148:155:41
8:20
+0:04
25K
15.53 mi12:39:252:10:458:2522:31
9:17
+0:57
30K
18.64 mi13:08:172:39:378:3428:52
9:17
0:00
20M
20.00 mi13:20:492:52:098:3612:32
9:13
-0:04
21M
21.00 mi13:31:473:03:078:4310:58
10:58
+1:45
35K
21.75 mi13:38:563:10:168:457:09
9:33
-1:25
23M
23.00 mi13:51:103:22:308:4812:14
9:46
+0:13
24M
24.00 mi14:00:423:32:028:509:32
9:32
-0:14
40K
24.85 mi14:08:553:40:158:528:13
9:37
+0:05
25.2M
25.20 mi14:12:223:43:428:533:27
10:00
+0:23
Finish
26.22 mi14:21:533:53:138:549:31
9:20
-0:40

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

8:00 /mi

Average Pace

8:54 /mi

Slowest Pace

10:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:48:14

46% of race

Time at Steady Pace

1:38:20

42% of race

Time at Slower Pace

26:39

11% of race

Average Pace: 8:54 /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 mi10:53:3124:518:0024:51
8:00
#14001
10K
6.21 mi11:18:4550:058:0425:14
8:07
#14815
15K
9.32 mi11:45:331:16:538:1526:48
8:38
#16173
20K
12.43 mi12:11:131:42:338:1525:40
8:16
#15926
Half
13.11 mi12:16:541:48:148:155:41
8:20
#15958
25K
15.53 mi12:39:252:10:458:2522:31
9:17
#16838
30K
18.64 mi13:08:172:39:378:3428:52
9:17
#17134
20M
20.00 mi13:20:492:52:098:3612:32
9:13
#17182
21M
21.00 mi13:31:473:03:078:4310:58
10:58
#17498
35K
21.75 mi13:38:563:10:168:457:09
9:33
#17630
23M
23.00 mi13:51:103:22:308:4812:14
9:46
#17803
24M
24.00 mi14:00:423:32:028:509:32
9:32
#17911
40K
24.85 mi14:08:553:40:158:528:13
9:37
#17951
25.2M
25.20 mi14:12:223:43:428:533:27
10:00
#17948
Finish
26.22 mi14:21:533:53:138:549:31
9:20
#18020
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi140019954995418589(Top 70%)11714(Top 77%)11714(Top 571%)
10K6.21 mi3.10 mi14815-81410263-30910263-30915673(Top 59%)10593(Top 70%)10593(Top 516%)
15K9.32 mi3.11 mi16173-135810761-49810761-49818589(Top 70%)11714(Top 77%)11714(Top 571%)
20K12.43 mi3.11 mi15926+24710649+11210649+11215353(Top 58%)10404(Top 69%)10404(Top 507%)
Half13.11 mi0.68 mi15958-3210657-810657-816650(Top 63%)10952(Top 72%)10952(Top 534%)
25K15.53 mi2.42 mi16838-88010962-30510962-30520148(Top 76%)12343(Top 81%)12343(Top 602%)
30K18.64 mi3.11 mi17134-29611074-11211074-11218577(Top 70%)11593(Top 76%)11593(Top 565%)
20M20.00 mi1.36 mi17182-4811072+211072+217648(Top 66%)11078(Top 73%)11078(Top 540%)
21M21.00 mi1.00 mi17498-31611183-11111183-11120747(Top 78%)12400(Top 82%)12400(Top 604%)
35K21.75 mi0.75 mi17630-13211226-4311226-4320011(Top 75%)12045(Top 79%)12045(Top 587%)
23M23.00 mi1.25 mi17803-17311282-5611282-5619321(Top 73%)11702(Top 77%)11702(Top 570%)
24M24.00 mi1.00 mi17911-10811319-3711319-3719312(Top 73%)11667(Top 77%)11667(Top 569%)
40K24.85 mi0.85 mi17951-4011324-511324-518708(Top 70%)11355(Top 75%)11355(Top 553%)
25.2M25.20 mi0.35 mi17948+311319+511319+517363(Top 65%)10716(Top 71%)10716(Top 522%)
Finish26.22 mi1.02 mi18020-7211334-1511334-1519506(Top 73%)11751(Top 77%)11751(Top 573%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 70%
×21stories
+97ft-345ft

Overall

18589

Males

11714

M50-54

11714

5K→10K

3.1 - 6.2 mi

Top 59%
×5stories
+79ft-138ft

Overall

15673

Males

10593

M50-54

10593

10K→15K

6.2 - 9.3 mi

Top 70%
×3stories
+67ft-78ft

Overall

18589

Males

11714

M50-54

11714

15K→20K

9.3 - 12.4 mi

Top 58%
×5stories
+106ft-86ft

Overall

15353

Males

10404

M50-54

10404

20K→Half

12.4 - 13.1 mi

Top 63%
×2stories
+19ft-37ft

Overall

16650

Males

10952

M50-54

10952

Half→25K

13.1 - 15.5 mi

Top 76%
×4stories
+66ft-88ft

Overall

20148

Males

12343

M50-54

12343

25K→30K

15.5 - 18.6 mi

Top 70%
×9stories
+181ft-148ft

Overall

18577

Males

11593

M50-54

11593

30K→20M

18.6 - 20.0 mi

Top 66%
×5stories
+64ft-50ft

Overall

17648

Males

11078

M50-54

11078

20M→21M

20.0 - 21.0 mi

Top 78%
×8stories
+106ft-24ft

Overall

20747

Males

12400

M50-54

12400

21M→35K

21.0 - 21.8 mi

Top 75%
×7stories
+17ft-86ft

Overall

20011

Males

12045

M50-54

12045

35K→23M

21.8 - 23.0 mi

Top 73%
×5stories
+23ft-63ft

Overall

19321

Males

11702

M50-54

11702

23M→24M

23.0 - 24.0 mi

Top 73%
×6stories
+12ft-82ft

Overall

19312

Males

11667

M50-54

11667

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

18708

Males

11355

M50-54

11355

40K→25.2M

24.9 - 25.2 mi

Top 65%
×1story
+13ft-16ft

Overall

17363

Males

10716

M50-54

10716

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2stories
+22ft-21ft

Overall

19506

Males

11751

M50-54

11751

Passing Analysis

Category:
Athletes Passed
784
Passed By
4803
Net Change
-4019
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#14001
5K → 10K65879-814#14001#14815
10K → 15K151373-1358#14815#16173
15K → 20K30154+247#16173#15926
20K → Half2052-32#15926#15958
Half → 25K22902-880#15958#16838
25K → 30K95391-296#16838#17134
30K → 20M56104-48#17134#17182
20M → 21M19335-316#17182#17498
21M → 35K21153-132#17498#17630
35K → 23M45218-173#17630#17803
23M → 24M32140-108#17803#17911
24M → 40K3777-40#17911#17951
40K → 25.2M2522+3#17951#17948
25.2M → Finish31103-72#17948#18020
TOTALS7844803-4019
📊

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