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BOSTON MARATHON 2023

Nathan Ryan O Hehir

Bib: 1123•M

NS

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 2%
Gender (Male)
#0 / 15176
Top 3%
Division (M18-39)
#0 / 5285
Top 7%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:24
Rank: #565
Start → 5K
5:55/mi
18:24 split
10K· 6.21 mi
36:46
Rank: #583 (-18)
5K → 10K
5:55/mi
18:22 split
15K· 9.32 mi
55:13
Rank: #578 (+5)
10K → 15K
5:56/mi
18:27 split
20K· 12.43 mi
1:13:57
Rank: #572 (+6)
15K → 20K
6:02/mi
18:44 split
Half· 13.11 mi
1:17:58
Rank: #570 (+2)
20K → Half
5:53/mi
4:01 split
25K· 15.53 mi
1:32:33
Rank: #560 (+10)
Half → 25K
6:01/mi
14:35 split
30K· 18.64 mi
1:51:45
Rank: #561 (-1)
25K → 30K
6:11/mi
19:12 split
20M
2:00:03
Rank: #550 (+11)
30K → 20M
6:06/mi
8:18 split
21M
2:06:25
Rank: #541 (+9)
20M → 21M
6:22/mi
6:22 split
35K· 21.75 mi
2:10:50
Rank: #535 (+6)
21M → 35K
5:54/mi
4:25 split
23M
2:18:30
Rank: #520 (+15)
35K → 23M
6:07/mi
7:40 split
24M
2:24:22
Rank: #501 (+19)
23M → 24M
5:52/mi
5:52 split
40K· 24.85 mi
2:29:27
Rank: #486 (+15)
24M → 40K
5:57/mi
5:05 split
25.2M
2:31:36
Rank: #477 (+9)
40K → 25.2M
6:14/mi
2:09 split
Finish· 26.22 mi
2:37:17
Rank: #444 (+33)
25.2M → Finish
5:35/mi
5:41 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:58
Pace5:57 /mi
2nd Half
Distance13.11 mi
Time1:19:19
Pace6:03 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:4118:245:5518:24
5:55
-
10K
6.21 mi10:37:0336:465:5518:22
5:55
0:00
15K
9.32 mi10:55:3055:135:5518:27
5:56
+0:01
20K
12.43 mi11:14:141:13:575:5718:44
6:02
+0:06
Half
13.11 mi11:18:151:17:585:574:01
5:53
-0:09
25K
15.53 mi11:32:501:32:335:5714:35
6:01
+0:08
30K
18.64 mi11:52:021:51:456:0019:12
6:11
+0:10
20M
20.00 mi12:00:202:00:036:008:18
6:06
-0:05
21M
21.00 mi12:06:422:06:256:016:22
6:22
+0:16
35K
21.75 mi12:11:072:10:506:014:25
5:54
-0:28
23M
23.00 mi12:18:472:18:306:017:40
6:07
+0:13
24M
24.00 mi12:24:392:24:226:015:52
5:52
-0:15
40K
24.85 mi12:29:442:29:276:015:05
5:57
+0:05
25.2M
25.20 mi12:31:532:31:366:012:09
6:14
+0:17
Finish
26.22 mi12:37:342:37:176:005:41
5:35
-0:39

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

5:35 /mi

Average Pace

6:00 /mi

Slowest Pace

6:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:09:34

82% of race

Time at Steady Pace

27:43

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:00 /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 mi10:18:4118:245:5518:24
5:55
#565
10K
6.21 mi10:37:0336:465:5518:22
5:55
#583
15K
9.32 mi10:55:3055:135:5518:27
5:56
#578
20K
12.43 mi11:14:141:13:575:5718:44
6:02
#572
Half
13.11 mi11:18:151:17:585:574:01
5:53
#570
25K
15.53 mi11:32:501:32:335:5714:35
6:01
#560
30K
18.64 mi11:52:021:51:456:0019:12
6:11
#561
20M
20.00 mi12:00:202:00:036:008:18
6:06
#550
21M
21.00 mi12:06:422:06:256:016:22
6:22
#541
35K
21.75 mi12:11:072:10:506:014:25
5:54
#535
23M
23.00 mi12:18:472:18:306:017:40
6:07
#520
24M
24.00 mi12:24:392:24:226:015:52
5:52
#501
40K
24.85 mi12:29:442:29:276:015:05
5:57
#486
25.2M
25.20 mi12:31:532:31:366:012:09
6:14
#477
Finish
26.22 mi12:37:342:37:176:005:41
5:35
#444
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi565522522578(Top 2%)535(Top 4%)535(Top 10%)
10K6.21 mi3.10 mi583-18541-19541-19607(Top 2%)564(Top 4%)564(Top 11%)
15K9.32 mi3.11 mi578+5535+6535+6578(Top 2%)535(Top 4%)535(Top 10%)
20K12.43 mi3.11 mi572+6529+6529+6615(Top 2%)575(Top 4%)575(Top 11%)
Half13.11 mi0.68 mi570+2528+1528+1510(Top 2%)472(Top 3%)472(Top 9%)
25K15.53 mi2.42 mi560+10520+8520+8564(Top 2%)524(Top 3%)524(Top 10%)
30K18.64 mi3.11 mi561-1521-1521-1637(Top 2%)600(Top 4%)600(Top 11%)
20M20.00 mi1.36 mi550+11510+11510+11491(Top 2%)457(Top 3%)457(Top 9%)
21M21.00 mi1.00 mi541+9502+8502+8433(Top 2%)400(Top 3%)400(Top 8%)
35K21.75 mi0.75 mi535+6497+5497+5510(Top 2%)474(Top 3%)474(Top 9%)
23M23.00 mi1.25 mi520+15482+15482+15486(Top 2%)455(Top 3%)455(Top 9%)
24M24.00 mi1.00 mi501+19464+18464+18341(Top 1%)315(Top 2%)315(Top 6%)
40K24.85 mi0.85 mi486+15450+14450+14278(Top 1%)255(Top 2%)255(Top 5%)
25.2M25.20 mi0.35 mi477+9441+9441+9186(Top 0.7%)167(Top 1%)167(Top 3%)
Finish26.22 mi1.02 mi444+33409+32409+32134(Top 0.5%)120(Top 0.8%)120(Top 2%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 2%
×21stories
+97ft-345ft

Overall

578

Males

535

M18-39

535

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

607

Males

564

M18-39

564

10K→15K

6.2 - 9.3 mi

Top 2%
×3stories
+67ft-78ft

Overall

578

Males

535

M18-39

535

15K→20K

9.3 - 12.4 mi

Top 2%
×5stories
+106ft-86ft

Overall

615

Males

575

M18-39

575

20K→Half

12.4 - 13.1 mi

Top 2%
×2stories
+19ft-37ft

Overall

510

Males

472

M18-39

472

Half→25K

13.1 - 15.5 mi

Top 2%
×4stories
+66ft-88ft

Overall

564

Males

524

M18-39

524

25K→30K

15.5 - 18.6 mi

Top 2%
×9stories
+181ft-148ft

Overall

637

Males

600

M18-39

600

30K→20M

18.6 - 20.0 mi

Top 2%
×5stories
+64ft-50ft

Overall

491

Males

457

M18-39

457

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

433

Males

400

M18-39

400

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

510

Males

474

M18-39

474

35K→23M

21.8 - 23.0 mi

Top 2%
×5stories
+23ft-63ft

Overall

486

Males

455

M18-39

455

23M→24M

23.0 - 24.0 mi

Top 1%
×6stories
+12ft-82ft

Overall

341

Males

315

M18-39

315

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

278

Males

255

M18-39

255

40K→25.2M

24.9 - 25.2 mi

Top 0.7%
×1story
+13ft-16ft

Overall

186

Males

167

M18-39

167

25.2M→Finish

25.2 - 26.2 mi

Top 0.5%
×2stories
+22ft-21ft

Overall

134

Males

120

M18-39

120

Passing Analysis

Category:
Athletes Passed
245
Passed By
124
Net Change
+121
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#565
5K → 10K2240-18#565#583
10K → 15K2217+5#583#578
15K → 20K2115+6#578#572
20K → Half42+2#572#570
Half → 25K2111+10#570#560
25K → 30K1617-1#560#561
30K → 20M176+11#561#550
20M → 21M156+9#550#541
21M → 35K104+6#541#535
35K → 23M183+15#535#520
23M → 24M201+19#520#501
24M → 40K172+15#501#486
40K → 25.2M90+9#486#477
25.2M → Finish330+33#477#444
TOTALS245124+121
📊

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