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BOSTON MARATHON 2025

Parker Simon

Bib: 385•M

ON

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0:00
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Overall
#0 / 28404
Top 0.9%
Gender (Male)
#0 / 16105
Top 1%
Division (M18-39)
#0 / 5642
Top 4%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
17:39
Rank: #400
Start → 5K
17:39 | 5:41/mi
10K· 6.21 mi
35:15
Rank: #389 (+11)
5K → 10K
17:36 | 5:40/mi
15K· 9.32 mi
52:46
Rank: #351 (+38)
10K → 15K
17:31 | 5:38/mi
20K· 12.43 mi
1:10:23
Rank: #327 (+24)
15K → 20K
17:37 | 5:40/mi
Half· 13.11 mi
1:14:15
Rank: #333 (-6)
20K → Half
3:52 | 5:40/mi
25K· 15.53 mi
1:28:05
Rank: #319 (+14)
Half → 25K
13:50 | 5:42/mi
30K· 18.64 mi
1:46:24
Rank: #316 (+3)
25K → 30K
18:19 | 5:54/mi
20M
1:54:34
Rank: #317 (-1)
30K → 20M
8:10 | 6:01/mi
21M
2:00:55
Rank: #313 (+4)
20M → 21M
6:21 | 6:21/mi
35K· 21.75 mi
2:05:13
Rank: #302 (+11)
21M → 35K
4:18 | 5:45/mi
23M
2:12:38
Rank: #279 (+23)
35K → 23M
7:25 | 5:55/mi
24M
2:18:25
Rank: #273 (+6)
23M → 24M
5:47 | 5:47/mi
40K· 24.85 mi
2:23:22
Rank: #264 (+9)
24M → 40K
4:57 | 5:47/mi
25.2M
2:25:33
Rank: #259 (+5)
40K → 25.2M
2:11 | 6:20/mi
Finish· 26.22 mi
2:31:12
Rank: #249 (+10)
25.2M → Finish
5:39 | 5:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:14:15
Pace5:40 /mi
2nd Half
Distance13.11 mi
Time1:16:57
Pace5:52 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:0017:395:4117:39
5:41
-
10K
6.21 mi10:35:3635:155:4017:36
5:40
-0:01
15K
9.32 mi10:53:0752:465:4017:31
5:38
-0:02
20K
12.43 mi11:10:441:10:235:4017:37
5:40
+0:02
Half
13.11 mi11:14:361:14:155:403:52
5:40
0:00
25K
15.53 mi11:28:261:28:055:4013:50
5:42
+0:02
30K
18.64 mi11:46:451:46:245:4218:19
5:54
+0:12
20M
20.00 mi11:54:551:54:345:448:10
6:01
+0:07
21M
21.00 mi12:01:162:00:555:456:21
6:21
+0:20
35K
21.75 mi12:05:342:05:135:454:18
5:45
-0:36
23M
23.00 mi12:12:592:12:385:467:25
5:55
+0:10
24M
24.00 mi12:18:462:18:255:465:47
5:47
-0:08
40K
24.85 mi12:23:432:23:225:464:57
5:47
0:00
25.2M
25.20 mi12:25:542:25:335:472:11
6:20
+0:33
Finish
26.22 mi12:31:332:31:125:465:39
5:33
-0:47

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

5:33 /mi

Average Pace

5:46 /mi

Slowest Pace

6:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:40

94% of race

Time at Steady Pace

8:32

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 5:46 /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 mi10:18:0017:395:4117:39
5:41
#400
10K
6.21 mi10:35:3635:155:4017:36
5:40
#389
15K
9.32 mi10:53:0752:465:4017:31
5:38
#351
20K
12.43 mi11:10:441:10:235:4017:37
5:40
#327
Half
13.11 mi11:14:361:14:155:403:52
5:40
#333
25K
15.53 mi11:28:261:28:055:4013:50
5:42
#319
30K
18.64 mi11:46:451:46:245:4218:19
5:54
#316
20M
20.00 mi11:54:551:54:345:448:10
6:01
#317
21M
21.00 mi12:01:162:00:555:456:21
6:21
#313
35K
21.75 mi12:05:342:05:135:454:18
5:45
#302
23M
23.00 mi12:12:592:12:385:467:25
5:55
#279
24M
24.00 mi12:18:462:18:255:465:47
5:47
#273
40K
24.85 mi12:23:432:23:225:464:57
5:47
#264
25.2M
25.20 mi12:25:542:25:335:472:11
6:20
#259
Finish
26.22 mi12:31:332:31:125:465:39
5:33
#249
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi400367367292(Top 1%)264(Top 2%)264(Top 5%)
10K6.21 mi3.10 mi389+11357+10357+10385(Top 1%)355(Top 2%)355(Top 6%)
15K9.32 mi3.11 mi351+38322+35322+35292(Top 1%)264(Top 2%)264(Top 5%)
20K12.43 mi3.11 mi327+24298+24298+24280(Top 1.0%)254(Top 2%)254(Top 5%)
Half13.11 mi0.68 mi333-6304-6304-6381(Top 1%)354(Top 2%)354(Top 6%)
25K15.53 mi2.42 mi319+14291+13291+13289(Top 1%)263(Top 2%)263(Top 5%)
30K18.64 mi3.11 mi316+3288+3288+3348(Top 1%)321(Top 2%)321(Top 6%)
20M20.00 mi1.36 mi317-1290-2290-2391(Top 1%)365(Top 2%)365(Top 6%)
21M21.00 mi1.00 mi313+4286+4286+4421(Top 1%)396(Top 2%)396(Top 7%)
35K21.75 mi0.75 mi302+11276+10276+10312(Top 1%)290(Top 2%)290(Top 5%)
23M23.00 mi1.25 mi279+23255+21255+21260(Top 0.9%)241(Top 1%)241(Top 4%)
24M24.00 mi1.00 mi273+6249+6249+6266(Top 0.9%)244(Top 2%)244(Top 4%)
40K24.85 mi0.85 mi264+9240+9240+9182(Top 0.6%)169(Top 1%)169(Top 3%)
25.2M25.20 mi0.35 mi259+5235+5235+5240(Top 0.8%)221(Top 1%)221(Top 4%)
Finish26.22 mi1.02 mi249+10226+9226+9177(Top 0.6%)168(Top 1%)168(Top 3%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 1%
×21stories
+97ft-345ft

Overall

292

Males

264

M18-39

264

5K→10K

3.1 - 6.2 mi

Top 1%
×5stories
+79ft-138ft

Overall

385

Males

355

M18-39

355

10K→15K

6.2 - 9.3 mi

Top 1%
×3stories
+67ft-78ft

Overall

292

Males

264

M18-39

264

15K→20K

9.3 - 12.4 mi

Top 1.0%
×5stories
+106ft-86ft

Overall

280

Males

254

M18-39

254

20K→Half

12.4 - 13.1 mi

Top 1%
×2stories
+19ft-37ft

Overall

381

Males

354

M18-39

354

Half→25K

13.1 - 15.5 mi

Top 1%
×4stories
+66ft-88ft

Overall

289

Males

263

M18-39

263

25K→30K

15.5 - 18.6 mi

Top 1%
×9stories
+181ft-148ft

Overall

348

Males

321

M18-39

321

30K→20M

18.6 - 20.0 mi

Top 1%
×5stories
+64ft-50ft

Overall

391

Males

365

M18-39

365

20M→21M

20.0 - 21.0 mi

Top 1%
×8stories
+106ft-24ft

Overall

421

Males

396

M18-39

396

21M→35K

21.0 - 21.8 mi

Top 1%
×7stories
+17ft-86ft

Overall

312

Males

290

M18-39

290

35K→23M

21.8 - 23.0 mi

Top 0.9%
×5stories
+23ft-63ft

Overall

260

Males

241

M18-39

241

23M→24M

23.0 - 24.0 mi

Top 0.9%
×6stories
+12ft-82ft

Overall

266

Males

244

M18-39

244

24M→40K

24.0 - 24.9 mi

Top 0.6%
×1story
+6ft-20ft

Overall

182

Males

169

M18-39

169

40K→25.2M

24.9 - 25.2 mi

Top 0.8%
×1story
+13ft-16ft

Overall

240

Males

221

M18-39

221

25.2M→Finish

25.2 - 26.2 mi

Top 0.6%
×2stories
+22ft-21ft

Overall

177

Males

168

M18-39

168

Passing Analysis

Category:
Athletes Passed
220
Passed By
69
Net Change
+151
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#400
5K → 10K2817+11#400#389
10K → 15K402+38#389#351
15K → 20K262+24#351#327
20K → Half28-6#327#333
Half → 25K206+14#333#319
25K → 30K1714+3#319#316
30K → 20M89-1#316#317
20M → 21M73+4#317#313
21M → 35K121+11#313#302
35K → 23M241+23#302#279
23M → 24M93+6#279#273
24M → 40K101+9#273#264
40K → 25.2M50+5#264#259
25.2M → Finish122+10#259#249
TOTALS22069+151
📊

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