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BOSTON MARATHON 2023

Daniel Heiderich

Bib: 12949•M

UT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 39%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 43%
Division (M50-54)
#0 / 2052
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:41
Rank: #10730
Start → 5K
23:41 | 7:37/mi
10K· 6.21 mi
46:53
Rank: #10422 (+308)
5K → 10K
23:12 | 7:28/mi
15K· 9.32 mi
1:10:11
Rank: #10324 (+98)
10K → 15K
23:18 | 7:30/mi
20K· 12.43 mi
1:33:48
Rank: #10255 (+69)
15K → 20K
23:37 | 7:36/mi
Half· 13.11 mi
1:38:54
Rank: #10233 (+22)
20K → Half
5:06 | 7:29/mi
25K· 15.53 mi
1:57:32
Rank: #10195 (+38)
Half → 25K
18:38 | 7:41/mi
30K· 18.64 mi
2:22:34
Rank: #10342 (-147)
25K → 30K
25:02 | 8:03/mi
20M
2:33:50
Rank: #10494 (-152)
30K → 20M
11:16 | 8:17/mi
21M
2:42:42
Rank: #10595 (-101)
20M → 21M
8:52 | 8:52/mi
35K· 21.75 mi
2:48:46
Rank: #10650 (-55)
21M → 35K
6:04 | 8:07/mi
23M
2:58:56
Rank: #10632 (+18)
35K → 23M
10:10 | 8:07/mi
24M
3:06:36
Rank: #10539 (+93)
23M → 24M
7:40 | 7:40/mi
40K· 24.85 mi
3:13:19
Rank: #10462 (+77)
24M → 40K
6:43 | 7:51/mi
25.2M
3:16:14
Rank: #10426 (+36)
40K → 25.2M
2:55 | 8:27/mi
Finish· 26.22 mi
3:24:04
Rank: #10374 (+52)
25.2M → Finish
7:50 | 7:41/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:54
Pace7:33 /mi
2nd Half
Distance13.11 mi
Time1:45:10
Pace8:01 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:1123:417:3723:41
7:37
-
10K
6.21 mi11:14:2346:537:3323:12
7:28
-0:09
15K
9.32 mi11:37:411:10:117:3223:18
7:30
+0:02
20K
12.43 mi12:01:181:33:487:3323:37
7:36
+0:06
Half
13.11 mi12:06:241:38:547:335:06
7:29
-0:07
25K
15.53 mi12:25:021:57:327:3418:38
7:41
+0:12
30K
18.64 mi12:50:042:22:347:3925:02
8:03
+0:22
20M
20.00 mi13:01:202:33:507:4111:16
8:17
+0:14
21M
21.00 mi13:10:122:42:427:458:52
8:52
+0:35
35K
21.75 mi13:16:162:48:467:466:04
8:07
-0:45
23M
23.00 mi13:26:262:58:567:4710:10
8:07
0:00
24M
24.00 mi13:34:063:06:367:477:40
7:40
-0:27
40K
24.85 mi13:40:493:13:197:476:43
7:51
+0:11
25.2M
25.20 mi13:43:443:16:147:472:55
8:27
+0:36
Finish
26.22 mi13:51:343:24:047:477:50
7:41
-0:46

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

7:28 /mi

Average Pace

7:47 /mi

Slowest Pace

8:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:01

89% of race

Time at Steady Pace

14:11

7% of race

Time at Slower Pace

8:52

4% of race

Average Pace: 7:47 /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 mi10:51:1123:417:3723:41
7:37
#10730
10K
6.21 mi11:14:2346:537:3323:12
7:28
#10422
15K
9.32 mi11:37:411:10:117:3223:18
7:30
#10324
20K
12.43 mi12:01:181:33:487:3323:37
7:36
#10255
Half
13.11 mi12:06:241:38:547:335:06
7:29
#10233
25K
15.53 mi12:25:021:57:327:3418:38
7:41
#10195
30K
18.64 mi12:50:042:22:347:3925:02
8:03
#10342
20M
20.00 mi13:01:202:33:507:4111:16
8:17
#10494
21M
21.00 mi13:10:122:42:427:458:52
8:52
#10595
35K
21.75 mi13:16:162:48:467:466:04
8:07
#10650
23M
23.00 mi13:26:262:58:567:4710:10
8:07
#10632
24M
24.00 mi13:34:063:06:367:477:40
7:40
#10539
40K
24.85 mi13:40:493:13:197:476:43
7:51
#10462
25.2M
25.20 mi13:43:443:16:147:472:55
8:27
#10426
Finish
26.22 mi13:51:343:24:047:477:50
7:41
#10374
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi107308528852810162(Top 38%)8231(Top 54%)8231(Top 401%)
10K6.21 mi3.10 mi10422+3088372+1568372+15610197(Top 38%)8274(Top 55%)8274(Top 403%)
15K9.32 mi3.11 mi10324+988342+308342+3010162(Top 38%)8231(Top 54%)8231(Top 401%)
20K12.43 mi3.11 mi10255+698290+528290+5210097(Top 38%)8123(Top 54%)8123(Top 396%)
Half13.11 mi0.68 mi10233+228272+188272+189995(Top 38%)8105(Top 53%)8105(Top 395%)
25K15.53 mi2.42 mi10195+388232+408232+4010182(Top 38%)8090(Top 53%)8090(Top 394%)
30K18.64 mi3.11 mi10342-1478256-248256-2411345(Top 43%)8516(Top 56%)8516(Top 415%)
20M20.00 mi1.36 mi10494-1528313-578313-5712279(Top 46%)8813(Top 58%)8813(Top 429%)
21M21.00 mi1.00 mi10595-1018332-198332-1912607(Top 47%)8845(Top 58%)8845(Top 431%)
35K21.75 mi0.75 mi10650-558334-28334-212800(Top 48%)8887(Top 59%)8887(Top 433%)
23M23.00 mi1.25 mi10632+188298+368298+3610581(Top 40%)7757(Top 51%)7757(Top 378%)
24M24.00 mi1.00 mi10539+938220+788220+788848(Top 33%)6817(Top 45%)6817(Top 332%)
40K24.85 mi0.85 mi10462+778156+648156+649018(Top 34%)6828(Top 45%)6828(Top 333%)
25.2M25.20 mi0.35 mi10426+368127+298127+299212(Top 35%)6872(Top 45%)6872(Top 335%)
Finish26.22 mi1.02 mi10374+528074+538074+539874(Top 37%)7219(Top 48%)7219(Top 352%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21stories
+97ft-345ft

Overall

10162

Males

8231

M50-54

8231

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10197

Males

8274

M50-54

8274

10K→15K

6.2 - 9.3 mi

Top 38%
×3stories
+67ft-78ft

Overall

10162

Males

8231

M50-54

8231

15K→20K

9.3 - 12.4 mi

Top 38%
×5stories
+106ft-86ft

Overall

10097

Males

8123

M50-54

8123

20K→Half

12.4 - 13.1 mi

Top 38%
×2stories
+19ft-37ft

Overall

9995

Males

8105

M50-54

8105

Half→25K

13.1 - 15.5 mi

Top 38%
×4stories
+66ft-88ft

Overall

10182

Males

8090

M50-54

8090

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11345

Males

8516

M50-54

8516

30K→20M

18.6 - 20.0 mi

Top 46%
×5stories
+64ft-50ft

Overall

12279

Males

8813

M50-54

8813

20M→21M

20.0 - 21.0 mi

Top 47%
×8stories
+106ft-24ft

Overall

12607

Males

8845

M50-54

8845

21M→35K

21.0 - 21.8 mi

Top 48%
×7stories
+17ft-86ft

Overall

12800

Males

8887

M50-54

8887

35K→23M

21.8 - 23.0 mi

Top 40%
×5stories
+23ft-63ft

Overall

10581

Males

7757

M50-54

7757

23M→24M

23.0 - 24.0 mi

Top 33%
×6stories
+12ft-82ft

Overall

8848

Males

6817

M50-54

6817

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9018

Males

6828

M50-54

6828

40K→25.2M

24.9 - 25.2 mi

Top 35%
×1story
+13ft-16ft

Overall

9212

Males

6872

M50-54

6872

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2stories
+22ft-21ft

Overall

9874

Males

7219

M50-54

7219

Passing Analysis

Category:
Athletes Passed
1811*
Passed By
1455
Net Change
+356
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10730
5K → 10K473*165+308#10730#10422
10K → 15K239141+98#10422#10324
15K → 20K189*120+69#10324#10255
20K → Half3816+22#10255#10233
Half → 25K153115+38#10233#10195
25K → 30K113260-147#10195#10342
30K → 20M39*191-152#10342#10494
20M → 21M53154-101#10494#10595
21M → 35K4095-55#10595#10650
35K → 23M9274+18#10650#10632
23M → 24M12229+93#10632#10539
24M → 40K11033+77#10539#10462
40K → 25.2M5115+36#10462#10426
25.2M → Finish9947+52#10426#10374
TOTALS1811*1455+356

* 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