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BOSTON MARATHON 2023

Tim Dahn

Bib: 7687•M

IL

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

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:24/mi
22:59
↑ 97↓ 3451.5%
10K· 6.21 mi
7:53/mi
47:29
↑ 79↓ 1380.4%
15K· 9.32 mi
7:48/mi
1:11:42
↑ 67↓ 78
20K· 12.43 mi
8:08/mi
1:36:59
↑ 106↓ 860.1%
Half· 13.11 mi
7:48/mi
1:42:18
↑ 19↓ 370.5%
25K· 15.53 mi
8:09/mi
2:02:04
↑ 66↓ 880.2%
30K· 18.64 mi
8:33/mi
2:28:39
↑ 181↓ 1480.2%
20M
8:38/mi
2:40:23
↑ 64↓ 500.2%
21M
9:27/mi
2:49:50
↑ 106↓ 241.6%
35K· 21.75 mi
8:11/mi
2:55:57
↑ 17↓ 861.7%
23M
8:59/mi
3:07:12
↑ 23↓ 630.6%
24M
8:32/mi
3:15:44
↓ 821.3%
40K· 24.85 mi
8:36/mi
3:23:05
↓ 200.3%
25.2M
9:28/mi
3:26:21
↑ 13↓ 160.2%
Finish· 26.22 mi
8:34/mi
3:35:05
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:18
Pace7:48 /mi
2nd Half
Distance13.11 mi
Time1:52:47
Pace8:36 /mi
📊Positive Split: 10.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:3422:597:2422:59
7:24
-
10K
6.21 mi10:52:0447:297:3924:30
7:53
+0:29
15K
9.32 mi11:16:171:11:427:4224:13
7:48
-0:05
20K
12.43 mi11:41:341:36:597:4825:17
8:08
+0:20
Half
13.11 mi11:46:531:42:187:485:19
7:48
-0:20
25K
15.53 mi12:06:392:02:047:5119:46
8:09
+0:21
30K
18.64 mi12:33:142:28:397:5826:35
8:33
+0:24
20M
20.00 mi12:44:582:40:238:0111:44
8:38
+0:05
21M
21.00 mi12:54:252:49:508:059:27
9:27
+0:49
35K
21.75 mi13:00:322:55:578:056:07
8:11
-1:16
23M
23.00 mi13:11:473:07:128:0811:15
8:59
+0:48
24M
24.00 mi13:20:193:15:448:098:32
8:32
-0:27
40K
24.85 mi13:27:403:23:058:107:21
8:36
+0:04
25.2M
25.20 mi13:30:563:26:218:113:16
9:28
+0:52
Finish
26.22 mi13:39:403:35:058:138:44
8:34
-0:54

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

7:24 /mi

Average Pace

8:13 /mi

Slowest Pace

9:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:11

60% of race

Time at Steady Pace

1:02:56

29% of race

Time at Slower Pace

23:58

11% of race

Average Pace: 8:12 /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 mi10:27:3422:597:2422:59
7:24
#8806
10K
6.21 mi10:52:0447:297:3924:30
7:53
#11275
15K
9.32 mi11:16:171:11:427:4224:13
7:48
#11719
20K
12.43 mi11:41:341:36:597:4825:17
8:08
#12437
Half
13.11 mi11:46:531:42:187:485:19
7:48
#12440
25K
15.53 mi12:06:392:02:047:5119:46
8:09
#12667
30K
18.64 mi12:33:142:28:397:5826:35
8:33
#13091
20M
20.00 mi12:44:582:40:238:0111:44
8:38
#13194
21M
21.00 mi12:54:252:49:508:059:27
9:27
#13348
35K
21.75 mi13:00:322:55:578:056:07
8:11
#13329
23M
23.00 mi13:11:473:07:128:0811:15
8:59
#13511
24M
24.00 mi13:20:193:15:448:098:32
8:32
#13538
40K
24.85 mi13:27:403:23:058:107:21
8:36
#13547
25.2M
25.20 mi13:30:563:26:218:113:16
9:28
#13567
Finish
26.22 mi13:39:403:35:058:138:44
8:34
#13654
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi88067484748412684(Top 48%)9388(Top 62%)9388(Top 458%)
10K6.21 mi3.10 mi11275-24698783-12998783-129913850(Top 52%)9877(Top 65%)9877(Top 481%)
15K9.32 mi3.11 mi11719-4448964-1818964-18112684(Top 48%)9388(Top 62%)9388(Top 458%)
20K12.43 mi3.11 mi12437-7189251-2879251-28714489(Top 54%)10075(Top 66%)10075(Top 491%)
Half13.11 mi0.68 mi12440-39254-39254-312618(Top 47%)9343(Top 62%)9343(Top 455%)
25K15.53 mi2.42 mi12667-2279336-829336-8213878(Top 52%)9716(Top 64%)9716(Top 473%)
30K18.64 mi3.11 mi13091-4249468-1329468-13214641(Top 55%)9905(Top 65%)9905(Top 483%)
20M20.00 mi1.36 mi13194-1039501-339501-3314459(Top 54%)9754(Top 64%)9754(Top 475%)
21M21.00 mi1.00 mi13348-1549551-509551-5015702(Top 59%)10220(Top 67%)10220(Top 498%)
35K21.75 mi0.75 mi13329+199525+269525+2613256(Top 50%)9097(Top 60%)9097(Top 443%)
23M23.00 mi1.25 mi13511-1829574-499574-4915966(Top 60%)10224(Top 67%)10224(Top 498%)
24M24.00 mi1.00 mi13538-279558+169558+1614647(Top 55%)9580(Top 63%)9580(Top 467%)
40K24.85 mi0.85 mi13547-99543+159543+1513902(Top 52%)9192(Top 61%)9192(Top 448%)
25.2M25.20 mi0.35 mi13567-209541+29541+214998(Top 56%)9674(Top 64%)9674(Top 471%)
Finish26.22 mi1.02 mi13654-879550-99550-915794(Top 59%)10078(Top 66%)10078(Top 491%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21story building
+97ft-345ft

Overall

12684

Males

9388

M50-54

9388

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

13850

Males

9877

M50-54

9877

10K→15K

6.2 - 9.3 mi

Top 48%
×3story building
+67ft-78ft

Overall

12684

Males

9388

M50-54

9388

15K→20K

9.3 - 12.4 mi

Top 54%
×5story building
+106ft-86ft

Overall

14489

Males

10075

M50-54

10075

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

12618

Males

9343

M50-54

9343

Half→25K

13.1 - 15.5 mi

Top 52%
×4story building
+66ft-88ft

Overall

13878

Males

9716

M50-54

9716

25K→30K

15.5 - 18.6 mi

Top 55%
×9story building
+181ft-148ft

Overall

14641

Males

9905

M50-54

9905

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

14459

Males

9754

M50-54

9754

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

15702

Males

10220

M50-54

10220

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

13256

Males

9097

M50-54

9097

35K→23M

21.8 - 23.0 mi

Top 60%
×5story building
+23ft-63ft

Overall

15966

Males

10224

M50-54

10224

23M→24M

23.0 - 24.0 mi

Top 55%
×6story building
+12ft-82ft

Overall

14647

Males

9580

M50-54

9580

24M→40K

24.0 - 24.9 mi

Top 52%
×1story
+6ft-20ft

Overall

13902

Males

9192

M50-54

9192

40K→25.2M

24.9 - 25.2 mi

Top 56%
×1story
+13ft-16ft

Overall

14998

Males

9674

M50-54

9674

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15794

Males

10078

M50-54

10078

Passing Analysis

Category:
Athletes Passed
706
Passed By
5552
Net Change
-4848
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8806
5K → 10K122479-2469#8806#11275
10K → 15K62506-444#11275#11719
15K → 20K37755-718#11719#12437
20K → Half3538-3#12437#12440
Half → 25K73300-227#12440#12667
25K → 30K84508-424#12667#13091
30K → 20M60163-103#13091#13194
20M → 21M42196-154#13194#13348
21M → 35K6445+19#13348#13329
35K → 23M41223-182#13329#13511
23M → 24M6592-27#13511#13538
24M → 40K5968-9#13538#13547
40K → 25.2M2545-20#13547#13567
25.2M → Finish47134-87#13567#13654
TOTALS7065552-4848
📊

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