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BOSTON MARATHON 2023

Dan Nephin

Bib: 12919•M

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 35%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 39%
Division (M55-59)
#0 / 1422
Top 20%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:48
Rank: #11097
Start → 5K
23:48 | 7:40/mi
10K· 6.21 mi
47:27
Rank: #11223 (-126)
5K → 10K
23:39 | 7:37/mi
15K· 9.32 mi
1:11:07
Rank: #11185 (+38)
10K → 15K
23:40 | 7:37/mi
20K· 12.43 mi
1:36:01
Rank: #11743 (-558)
15K → 20K
24:54 | 8:01/mi
Half· 13.11 mi
1:41:11
Rank: #11692 (+51)
20K → Half
5:10 | 7:34/mi
25K· 15.53 mi
1:59:27
Rank: #11204 (+488)
Half → 25K
18:16 | 7:32/mi
30K· 18.64 mi
2:23:25
Rank: #10714 (+490)
25K → 30K
23:58 | 7:43/mi
20M
2:33:54
Rank: #10513 (+201)
30K → 20M
10:29 | 7:43/mi
21M
2:41:48
Rank: #10257 (+256)
20M → 21M
7:54 | 7:54/mi
35K· 21.75 mi
2:47:22
Rank: #10154 (+103)
21M → 35K
5:34 | 7:26/mi
23M
2:56:49
Rank: #9902 (+252)
35K → 23M
9:27 | 7:33/mi
24M
3:04:11
Rank: #9721 (+181)
23M → 24M
7:22 | 7:22/mi
40K· 24.85 mi
3:10:41
Rank: #9598 (+123)
24M → 40K
6:30 | 7:36/mi
25.2M
3:13:30
Rank: #9540 (+58)
40K → 25.2M
2:49 | 8:10/mi
Finish· 26.22 mi
3:20:57
Rank: #9442 (+98)
25.2M → Finish
7:27 | 7:19/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:41:11
Pace7:43 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:39:46
Pace7:37 /mi
📊Negative Split: 1.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:55:0223:487:4023:48
7:40
-
10K
6.21 mi11:18:4147:277:3823:39
7:37
-0:03
15K
9.32 mi11:42:211:11:077:3823:40
7:37
0:00
20K
12.43 mi12:07:151:36:017:4424:54
8:01
+0:24
Half
13.11 mi12:12:251:41:117:435:10
7:34
-0:27
25K
15.53 mi12:30:411:59:277:4118:16
7:32
-0:02
30K
18.64 mi12:54:392:23:257:4223:58
7:43
+0:11
20M
20.00 mi13:05:082:33:547:4210:29
7:43
0:00
21M
21.00 mi13:13:022:41:487:427:54
7:54
+0:11
35K
21.75 mi13:18:362:47:227:425:34
7:26
-0:28
23M
23.00 mi13:28:032:56:497:419:27
7:33
+0:07
24M
24.00 mi13:35:253:04:117:407:22
7:22
-0:11
40K
24.85 mi13:41:553:10:417:406:30
7:36
+0:14
25.2M
25.20 mi13:44:443:13:307:412:49
8:10
+0:34
Finish
26.22 mi13:52:113:20:577:407:27
7:19
-0:51

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

7:19 /mi

Average Pace

7:40 /mi

Slowest Pace

8:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:18:08

99% of race

Time at Steady Pace

2:49

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:40 /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 mi10:55:0223:487:4023:48
7:40
#11097
10K
6.21 mi11:18:4147:277:3823:39
7:37
#11223
15K
9.32 mi11:42:211:11:077:3823:40
7:37
#11185
20K
12.43 mi12:07:151:36:017:4424:54
8:01
#11743
Half
13.11 mi12:12:251:41:117:435:10
7:34
#11692
25K
15.53 mi12:30:411:59:277:4118:16
7:32
#11204
30K
18.64 mi12:54:392:23:257:4223:58
7:43
#10714
20M
20.00 mi13:05:082:33:547:4210:29
7:43
#10513
21M
21.00 mi13:13:022:41:487:427:54
7:54
#10257
35K
21.75 mi13:18:362:47:227:425:34
7:26
#10154
23M
23.00 mi13:28:032:56:497:419:27
7:33
#9902
24M
24.00 mi13:35:253:04:117:407:22
7:22
#9721
40K
24.85 mi13:41:553:10:417:406:30
7:36
#9598
25.2M
25.20 mi13:44:443:13:307:412:49
8:10
#9540
Finish
26.22 mi13:52:113:20:577:407:27
7:19
#9442
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi110978701870111143(Top 42%)8696(Top 57%)8696(Top 612%)
10K6.21 mi3.10 mi11223-1268755-548755-5411418(Top 43%)8834(Top 58%)8834(Top 621%)
15K9.32 mi3.11 mi11185+388738+178738+1711143(Top 42%)8696(Top 57%)8696(Top 612%)
20K12.43 mi3.11 mi11743-5588962-2248962-22413531(Top 51%)9676(Top 64%)9676(Top 680%)
Half13.11 mi0.68 mi11692+518939+238939+2310734(Top 40%)8460(Top 56%)8460(Top 595%)
25K15.53 mi2.42 mi11204+4888714+2258714+2259020(Top 34%)7449(Top 49%)7449(Top 524%)
30K18.64 mi3.11 mi10714+4908438+2768438+2768743(Top 33%)7125(Top 47%)7125(Top 501%)
20M20.00 mi1.36 mi10513+2018321+1178321+1178291(Top 31%)6776(Top 45%)6776(Top 477%)
21M21.00 mi1.00 mi10257+2568170+1518170+1516742(Top 25%)5711(Top 38%)5711(Top 402%)
35K21.75 mi0.75 mi10154+1038106+648106+648079(Top 30%)6550(Top 43%)6550(Top 461%)
23M23.00 mi1.25 mi9902+2527937+1697937+1696730(Top 25%)5661(Top 37%)5661(Top 398%)
24M24.00 mi1.00 mi9721+1817810+1277810+1276840(Top 26%)5629(Top 37%)5629(Top 396%)
40K24.85 mi0.85 mi9598+1237718+927718+927344(Top 28%)5843(Top 39%)5843(Top 411%)
25.2M25.20 mi0.35 mi9540+587672+467672+467491(Top 28%)5891(Top 39%)5891(Top 414%)
Finish26.22 mi1.02 mi9442+987592+807592+807201(Top 27%)5692(Top 38%)5692(Top 400%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 42%
×21stories
+97ft-345ft

Overall

11143

Males

8696

M55-59

8696

5K→10K

3.1 - 6.2 mi

Top 43%
×5stories
+79ft-138ft

Overall

11418

Males

8834

M55-59

8834

10K→15K

6.2 - 9.3 mi

Top 42%
×3stories
+67ft-78ft

Overall

11143

Males

8696

M55-59

8696

15K→20K

9.3 - 12.4 mi

Top 51%
×5stories
+106ft-86ft

Overall

13531

Males

9676

M55-59

9676

20K→Half

12.4 - 13.1 mi

Top 40%
×2stories
+19ft-37ft

Overall

10734

Males

8460

M55-59

8460

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9020

Males

7449

M55-59

7449

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

8743

Males

7125

M55-59

7125

30K→20M

18.6 - 20.0 mi

Top 31%
×5stories
+64ft-50ft

Overall

8291

Males

6776

M55-59

6776

20M→21M

20.0 - 21.0 mi

Top 25%
×8stories
+106ft-24ft

Overall

6742

Males

5711

M55-59

5711

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8079

Males

6550

M55-59

6550

35K→23M

21.8 - 23.0 mi

Top 25%
×5stories
+23ft-63ft

Overall

6730

Males

5661

M55-59

5661

23M→24M

23.0 - 24.0 mi

Top 26%
×6stories
+12ft-82ft

Overall

6840

Males

5629

M55-59

5629

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7344

Males

5843

M55-59

5843

40K→25.2M

24.9 - 25.2 mi

Top 28%
×1story
+13ft-16ft

Overall

7491

Males

5891

M55-59

5891

25.2M→Finish

25.2 - 26.2 mi

Top 27%
×2stories
+22ft-21ft

Overall

7201

Males

5692

M55-59

5692

Passing Analysis

Category:
Athletes Passed
2876*
Passed By
1221
Net Change
+1655
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11097
5K → 10K236362-126#11097#11223
10K → 15K209171+38#11223#11185
15K → 20K44602-558#11185#11743
20K → Half6110+51#11743#11692
Half → 25K4902+488#11692#11204
25K → 30K50212+490#11204#10714
30K → 20M209*8+201#10714#10513
20M → 21M2615+256#10513#10257
21M → 35K1063+103#10257#10154
35K → 23M253*1+252#10154#9902
23M → 24M1854+181#9902#9721
24M → 40K131*8+123#9721#9598
40K → 25.2M6911+58#9598#9540
25.2M → Finish12022+98#9540#9442
TOTALS2876*1221+1655

* 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