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BOSTON MARATHON 2023

Nicolas Crouzier

Bib: 421•M

MD

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 4%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
18:20
Rank: #528
Start → 5K
18:20 | 5:54/mi
10K· 6.21 mi
36:02
Rank: #399 (+129)
5K → 10K
17:42 | 5:42/mi
15K· 9.32 mi
53:42
Rank: #349 (+50)
10K → 15K
17:40 | 5:41/mi
20K· 12.43 mi
1:11:21
Rank: #309 (+40)
15K → 20K
17:39 | 5:41/mi
Half· 13.11 mi
1:15:11
Rank: #303 (+6)
20K → Half
3:50 | 5:37/mi
25K· 15.53 mi
1:29:11
Rank: #294 (+9)
Half → 25K
14:00 | 5:46/mi
30K· 18.64 mi
1:47:35
Rank: #280 (+14)
25K → 30K
18:24 | 5:55/mi
20M
1:55:41
Rank: #276 (+4)
30K → 20M
8:06 | 5:58/mi
21M
2:02:01
Rank: #275 (+1)
20M → 21M
6:20 | 6:20/mi
35K· 21.75 mi
2:06:26
Rank: #279 (-4)
21M → 35K
4:25 | 5:54/mi
23M
2:14:15
Rank: #282 (-3)
35K → 23M
7:49 | 6:15/mi
24M
2:20:21
Rank: #280 (+2)
23M → 24M
6:06 | 6:06/mi
40K· 24.85 mi
2:25:48
Rank: #285 (-5)
24M → 40K
5:27 | 6:22/mi
25.2M
2:28:10
Rank: #289 (-4)
40K → 25.2M
2:22 | 6:52/mi
Finish· 26.22 mi
2:34:20
Rank: #295 (-6)
25.2M → Finish
6:10 | 6:03/mi

Course Map & Elevation

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:15:11
Pace5:44 /mi
2nd Half
Distance13.11 mi
Time1:19:09
Pace6:02 /mi
📊Positive Split: 5.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:3118:205:5418:20
5:54
-
10K
6.21 mi10:36:1336:025:4817:42
5:42
-0:12
15K
9.32 mi10:53:5353:425:4617:40
5:41
-0:01
20K
12.43 mi11:11:321:11:215:4417:39
5:41
0:00
Half
13.11 mi11:15:221:15:115:443:50
5:37
-0:04
25K
15.53 mi11:29:221:29:115:4414:00
5:46
+0:09
30K
18.64 mi11:47:461:47:355:4618:24
5:55
+0:09
20M
20.00 mi11:55:521:55:415:478:06
5:58
+0:03
21M
21.00 mi12:02:122:02:015:496:20
6:20
+0:22
35K
21.75 mi12:06:372:06:265:494:25
5:54
-0:26
23M
23.00 mi12:14:262:14:155:507:49
6:15
+0:21
24M
24.00 mi12:20:322:20:215:516:06
6:06
-0:09
40K
24.85 mi12:25:592:25:485:525:27
6:22
+0:16
25.2M
25.20 mi12:28:212:28:105:532:22
6:52
+0:30
Finish
26.22 mi12:34:312:34:205:536:10
6:03
-0:49

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

5:37 /mi

Average Pace

5:53 /mi

Slowest Pace

6:52 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

56:51

37% of race

Time at Steady Pace

1:09:25

45% of race

Time at Slower Pace

28:04

18% of race

Average Pace: 5:53 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:18:3118:205:5418:20
5:54
#528
10K
6.21 mi10:36:1336:025:4817:42
5:42
#399
15K
9.32 mi10:53:5353:425:4617:40
5:41
#349
20K
12.43 mi11:11:321:11:215:4417:39
5:41
#309
Half
13.11 mi11:15:221:15:115:443:50
5:37
#303
25K
15.53 mi11:29:221:29:115:4414:00
5:46
#294
30K
18.64 mi11:47:461:47:355:4618:24
5:55
#280
20M
20.00 mi11:55:521:55:415:478:06
5:58
#276
21M
21.00 mi12:02:122:02:015:496:20
6:20
#275
35K
21.75 mi12:06:372:06:265:494:25
5:54
#279
23M
23.00 mi12:14:262:14:155:507:49
6:15
#282
24M
24.00 mi12:20:322:20:215:516:06
6:06
#280
40K
24.85 mi12:25:592:25:485:525:27
6:22
#285
25.2M
25.20 mi12:28:212:28:105:532:22
6:52
#289
Finish
26.22 mi12:34:312:34:205:536:10
6:03
#295
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi528486486230(Top 0.9%)202(Top 1%)202(Top 4%)
10K6.21 mi3.10 mi399+129364+122364+122300(Top 1%)267(Top 2%)267(Top 5%)
15K9.32 mi3.11 mi349+50316+48316+48230(Top 0.9%)202(Top 1%)202(Top 4%)
20K12.43 mi3.11 mi309+40277+39277+39176(Top 0.7%)154(Top 1%)154(Top 3%)
Half13.11 mi0.68 mi303+6271+6271+6208(Top 0.8%)186(Top 1%)186(Top 4%)
25K15.53 mi2.42 mi294+9262+9262+9237(Top 0.9%)214(Top 1%)214(Top 4%)
30K18.64 mi3.11 mi280+14249+13249+13287(Top 1%)263(Top 2%)263(Top 5%)
20M20.00 mi1.36 mi276+4247+2247+2303(Top 1%)278(Top 2%)278(Top 5%)
21M21.00 mi1.00 mi275+1248-1248-1384(Top 1%)355(Top 2%)355(Top 7%)
35K21.75 mi0.75 mi279-4251-3251-3504(Top 2%)468(Top 3%)468(Top 9%)
23M23.00 mi1.25 mi282-3254-3254-3687(Top 3%)647(Top 4%)647(Top 12%)
24M24.00 mi1.00 mi280+2252+2252+2751(Top 3%)711(Top 5%)711(Top 13%)
40K24.85 mi0.85 mi285-5257-5257-51099(Top 4%)1038(Top 7%)1038(Top 20%)
25.2M25.20 mi0.35 mi289-4261-4261-41271(Top 5%)1201(Top 8%)1201(Top 23%)
Finish26.22 mi1.02 mi295-6267-6267-6843(Top 3%)807(Top 5%)807(Top 15%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 0.9%
×21stories
+97ft-345ft

Overall

230

Males

202

M18-39

202

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

300

Males

267

M18-39

267

10K→15K

6.2 - 9.3 mi

Top 0.9%
×3stories
+67ft-78ft

Overall

230

Males

202

M18-39

202

15K→20K

9.3 - 12.4 mi

Top 0.7%
×5stories
+106ft-86ft

Overall

176

Males

154

M18-39

154

20K→Half

12.4 - 13.1 mi

Top 0.8%
×2stories
+19ft-37ft

Overall

208

Males

186

M18-39

186

Half→25K

13.1 - 15.5 mi

Top 0.9%
×4stories
+66ft-88ft

Overall

237

Males

214

M18-39

214

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

287

Males

263

M18-39

263

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

303

Males

278

M18-39

278

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

384

Males

355

M18-39

355

21M→35K

21.0 - 21.8 mi

Top 2%
×7stories
+17ft-86ft

Overall

504

Males

468

M18-39

468

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

687

Males

647

M18-39

647

23M→24M

23.0 - 24.0 mi

Top 3%
×6stories
+12ft-82ft

Overall

751

Males

711

M18-39

711

24M→40K

24.0 - 24.9 mi

Top 4%
×1story
+6ft-20ft

Overall

1099

Males

1038

M18-39

1038

40K→25.2M

24.9 - 25.2 mi

Top 5%
×1story
+13ft-16ft

Overall

1271

Males

1201

M18-39

1201

25.2M→Finish

25.2 - 26.2 mi

Top 3%
×2stories
+22ft-21ft

Overall

843

Males

807

M18-39

807

Passing Analysis

Category:
Athletes Passed
292
Passed By
59
Net Change
+233
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#528
5K → 10K1290+129#528#399
10K → 15K500+50#399#349
15K → 20K400+40#349#309
20K → Half60+6#309#303
Half → 25K112+9#303#294
25K → 30K162+14#294#280
30K → 20M73+4#280#276
20M → 21M87+1#276#275
21M → 35K37-4#275#279
35K → 23M69-3#279#282
23M → 24M53+2#282#280
24M → 40K510-5#280#285
40K → 25.2M26-4#285#289
25.2M → Finish410-6#289#295
TOTALS29259+233
📊

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