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BOSTON MARATHON 2023

Simon Nolan

Bib: 3938•M

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 1%
Gender (Male)
#0 / 15176
Top 2%
Division (M18-39)
#0 / 5285
Top 6%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:14
Rank: #1108
Start → 5K
19:14 | 6:11/mi
10K· 6.21 mi
37:22
Rank: #759 (+349)
5K → 10K
18:08 | 5:50/mi
15K· 9.32 mi
55:22
Rank: #602 (+157)
10K → 15K
18:00 | 5:48/mi
20K· 12.43 mi
1:13:26
Rank: #515 (+87)
15K → 20K
18:04 | 5:49/mi
Half· 13.11 mi
1:17:21
Rank: #495 (+20)
20K → Half
3:55 | 5:44/mi
25K· 15.53 mi
1:31:26
Rank: #452 (+43)
Half → 25K
14:05 | 5:49/mi
30K· 18.64 mi
1:49:56
Rank: #416 (+36)
25K → 30K
18:30 | 5:57/mi
20M
1:58:01
Rank: #406 (+10)
30K → 20M
8:05 | 5:57/mi
21M
2:04:20
Rank: #400 (+6)
20M → 21M
6:19 | 6:19/mi
35K· 21.75 mi
2:08:34
Rank: #387 (+13)
21M → 35K
4:14 | 5:40/mi
23M
2:16:00
Rank: #369 (+18)
35K → 23M
7:26 | 5:56/mi
24M
2:21:56
Rank: #364 (+5)
23M → 24M
5:56 | 5:56/mi
40K· 24.85 mi
2:27:08
Rank: #354 (+10)
24M → 40K
5:12 | 6:05/mi
25.2M
2:29:31
Rank: #364 (-10)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:35:48
Rank: #373 (-9)
25.2M → Finish
6:17 | 6:10/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:17:21
Pace5:54 /mi
2nd Half
Distance13.11 mi
Time1:18:27
Pace5:59 /mi
📊Positive Split: 1.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:2219:146:1119:14
6:11
-
10K
6.21 mi10:38:3037:226:0118:08
5:50
-0:21
15K
9.32 mi10:56:3055:225:5618:00
5:48
-0:02
20K
12.43 mi11:14:341:13:265:5518:04
5:49
+0:01
Half
13.11 mi11:18:291:17:215:543:55
5:44
-0:05
25K
15.53 mi11:32:341:31:265:5314:05
5:49
+0:05
30K
18.64 mi11:51:041:49:565:5418:30
5:57
+0:08
20M
20.00 mi11:59:091:58:015:548:05
5:57
0:00
21M
21.00 mi12:05:282:04:205:556:19
6:19
+0:22
35K
21.75 mi12:09:422:08:345:554:14
5:40
-0:39
23M
23.00 mi12:17:082:16:005:557:26
5:56
+0:16
24M
24.00 mi12:23:042:21:565:555:56
5:56
0:00
40K
24.85 mi12:28:162:27:085:555:12
6:05
+0:09
25.2M
25.20 mi12:30:392:29:315:562:23
6:55
+0:50
Finish
26.22 mi12:36:562:35:485:576:17
6:10
-0:45

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

5:40 /mi

Average Pace

5:57 /mi

Slowest Pace

6:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

8:09

5% of race

Time at Steady Pace

1:48:14

69% of race

Time at Slower Pace

39:25

25% of race

Average Pace: 5:57 /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 mi10:20:2219:146:1119:14
6:11
#1108
10K
6.21 mi10:38:3037:226:0118:08
5:50
#759
15K
9.32 mi10:56:3055:225:5618:00
5:48
#602
20K
12.43 mi11:14:341:13:265:5518:04
5:49
#515
Half
13.11 mi11:18:291:17:215:543:55
5:44
#495
25K
15.53 mi11:32:341:31:265:5314:05
5:49
#452
30K
18.64 mi11:51:041:49:565:5418:30
5:57
#416
20M
20.00 mi11:59:091:58:015:548:05
5:57
#406
21M
21.00 mi12:05:282:04:205:556:19
6:19
#400
35K
21.75 mi12:09:422:08:345:554:14
5:40
#387
23M
23.00 mi12:17:082:16:005:557:26
5:56
#369
24M
24.00 mi12:23:042:21:565:555:56
5:56
#364
40K
24.85 mi12:28:162:27:085:555:12
6:05
#354
25.2M
25.20 mi12:30:392:29:315:562:23
6:55
#364
Finish
26.22 mi12:36:562:35:485:576:17
6:10
#373
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi110810471047361(Top 1%)328(Top 2%)328(Top 6%)
10K6.21 mi3.10 mi759+349715+332715+332480(Top 2%)444(Top 3%)444(Top 8%)
15K9.32 mi3.11 mi602+157559+156559+156361(Top 1%)328(Top 2%)328(Top 6%)
20K12.43 mi3.11 mi515+87476+83476+83326(Top 1%)294(Top 2%)294(Top 6%)
Half13.11 mi0.68 mi495+20456+20456+20318(Top 1%)294(Top 2%)294(Top 6%)
25K15.53 mi2.42 mi452+43416+40416+40292(Top 1%)264(Top 2%)264(Top 5%)
30K18.64 mi3.11 mi416+36383+33383+33332(Top 1%)305(Top 2%)305(Top 6%)
20M20.00 mi1.36 mi406+10374+9374+9293(Top 1%)268(Top 2%)268(Top 5%)
21M21.00 mi1.00 mi400+6368+6368+6366(Top 1%)337(Top 2%)337(Top 6%)
35K21.75 mi0.75 mi387+13355+13355+13189(Top 0.7%)166(Top 1%)166(Top 3%)
23M23.00 mi1.25 mi369+18338+17338+17251(Top 0.9%)227(Top 1%)227(Top 4%)
24M24.00 mi1.00 mi364+5332+6332+6428(Top 2%)401(Top 3%)401(Top 8%)
40K24.85 mi0.85 mi354+10322+10322+10447(Top 2%)420(Top 3%)420(Top 8%)
25.2M25.20 mi0.35 mi364-10332-10332-101406(Top 5%)1323(Top 9%)1323(Top 25%)
Finish26.22 mi1.02 mi373-9341-9341-91152(Top 4%)1096(Top 7%)1096(Top 21%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

361

Males

328

M18-39

328

5K→10K

3.1 - 6.2 mi

Top 2%
×5stories
+79ft-138ft

Overall

480

Males

444

M18-39

444

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

361

Males

328

M18-39

328

15K→20K

9.3 - 12.4 mi

Top 1%
×5stories
+106ft-86ft

Overall

326

Males

294

M18-39

294

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

318

Males

294

M18-39

294

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

292

Males

264

M18-39

264

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

332

Males

305

M18-39

305

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

293

Males

268

M18-39

268

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

366

Males

337

M18-39

337

21M→35K

21.0 - 21.8 mi

Top 0.7%
×7stories
+17ft-86ft

Overall

189

Males

166

M18-39

166

35K→23M

21.8 - 23.0 mi

Top 0.9%
×5stories
+23ft-63ft

Overall

251

Males

227

M18-39

227

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

428

Males

401

M18-39

401

24M→40K

24.0 - 24.9 mi

Top 2%
×1story
+6ft-20ft

Overall

447

Males

420

M18-39

420

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1406

Males

1323

M18-39

1323

25.2M→Finish

25.2 - 26.2 mi

Top 4%
×2stories
+22ft-21ft

Overall

1152

Males

1096

M18-39

1096

Passing Analysis

Category:
Athletes Passed
781
Passed By
46
Net Change
+735
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1108
5K → 10K3490+349#1108#759
10K → 15K1570+157#759#602
15K → 20K870+87#602#515
20K → Half200+20#515#495
Half → 25K430+43#495#452
25K → 30K426+36#452#416
30K → 20M133+10#416#406
20M → 21M115+6#406#400
21M → 35K130+13#400#387
35K → 23M202+18#387#369
23M → 24M72+5#369#364
24M → 40K133+10#364#354
40K → 25.2M111-10#354#364
25.2M → Finish514-9#364#373
TOTALS78146+735
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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