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BOSTON MARATHON 2023

John Floros

Bib: 30275•M

MA

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

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:08/mi
28:22
↑ 97↓ 3451.5%
10K· 6.21 mi
8:28/mi
54:40
↑ 79↓ 1380.4%
15K· 9.32 mi
8:27/mi
1:20:54
↑ 67↓ 78
20K· 12.43 mi
8:31/mi
1:47:22
↑ 106↓ 860.1%
Half· 13.11 mi
8:17/mi
1:53:01
↑ 19↓ 370.5%
25K· 15.53 mi
8:38/mi
2:13:57
↑ 66↓ 880.2%
30K· 18.64 mi
8:39/mi
2:40:49
↑ 181↓ 1480.2%
20M
8:37/mi
2:52:31
↑ 64↓ 500.2%
21M
9:01/mi
3:01:32
↑ 106↓ 241.6%
35K· 21.75 mi
8:20/mi
3:07:46
↑ 17↓ 861.7%
23M
8:45/mi
3:18:43
↑ 23↓ 630.6%
24M
8:25/mi
3:27:08
↓ 821.3%
40K· 24.85 mi
8:51/mi
3:34:42
↓ 200.3%
25.2M
9:31/mi
3:37:59
↑ 13↓ 160.2%
Finish· 26.22 mi
8:46/mi
3:46:55
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:53:01
Pace8:37 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:53:54
Pace8:41 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:51:2228:229:0828:22
9:08
-
10K
6.21 mi12:17:4054:408:4826:18
8:28
-0:40
15K
9.32 mi12:43:541:20:548:4126:14
8:27
-0:01
20K
12.43 mi13:10:221:47:228:3826:28
8:31
+0:04
Half
13.11 mi13:16:011:53:018:375:39
8:17
-0:14
25K
15.53 mi13:36:572:13:578:3720:56
8:38
+0:21
30K
18.64 mi14:03:492:40:498:3826:52
8:39
+0:01
20M
20.00 mi14:15:312:52:318:3811:42
8:37
-0:02
21M
21.00 mi14:24:323:01:328:399:01
9:01
+0:24
35K
21.75 mi14:30:463:07:468:386:14
8:20
-0:41
23M
23.00 mi14:41:433:18:438:3810:57
8:45
+0:25
24M
24.00 mi14:50:083:27:088:388:25
8:25
-0:20
40K
24.85 mi14:57:423:34:428:387:34
8:51
+0:26
25.2M
25.20 mi15:00:593:37:598:393:17
9:31
+0:40
Finish
26.22 mi15:09:553:46:558:408:56
8:46
-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

8:17 /mi

Average Pace

8:40 /mi

Slowest Pace

9:31 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:15:16

86% of race

Time at Steady Pace

31:39

14% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:39 /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 mi11:51:2228:229:0828:22
9:08
#20970
10K
6.21 mi12:17:4054:408:4826:18
8:28
#19657
15K
9.32 mi12:43:541:20:548:4126:14
8:27
#18922
20K
12.43 mi13:10:221:47:228:3826:28
8:31
#18447
Half
13.11 mi13:16:011:53:018:375:39
8:17
#18328
25K
15.53 mi13:36:572:13:578:3720:56
8:38
#18084
30K
18.64 mi14:03:492:40:498:3826:52
8:39
#17525
20M
20.00 mi14:15:312:52:318:3811:42
8:37
#17277
21M
21.00 mi14:24:323:01:328:399:01
9:01
#17058
35K
21.75 mi14:30:463:07:468:386:14
8:20
#16955
23M
23.00 mi14:41:433:18:438:3810:57
8:45
#16823
24M
24.00 mi14:50:083:27:088:388:25
8:25
#16687
40K
24.85 mi14:57:423:34:428:387:34
8:51
#16633
25.2M
25.20 mi15:00:593:37:598:393:17
9:31
#16600
Finish
26.22 mi15:09:553:46:558:408:56
8:46
#16598
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi20970125931259317410(Top 65%)11227(Top 74%)11227(Top 212%)
10K6.21 mi3.10 mi19657+131312070+52312070+52318019(Top 68%)11512(Top 76%)11512(Top 218%)
15K9.32 mi3.11 mi18922+73511816+25411816+25417410(Top 65%)11227(Top 74%)11227(Top 212%)
20K12.43 mi3.11 mi18447+47511650+16611650+16616970(Top 64%)11039(Top 73%)11039(Top 209%)
Half13.11 mi0.68 mi18328+11911603+4711603+4716330(Top 61%)10816(Top 71%)10816(Top 205%)
25K15.53 mi2.42 mi18084+24411482+12111482+12116995(Top 64%)10970(Top 72%)10970(Top 208%)
30K18.64 mi3.11 mi17525+55911234+24811234+24815204(Top 57%)10128(Top 67%)10128(Top 192%)
20M20.00 mi1.36 mi17277+24811113+12111113+12114316(Top 54%)9700(Top 64%)9700(Top 184%)
21M21.00 mi1.00 mi17058+21911013+10011013+10013503(Top 51%)9281(Top 61%)9281(Top 176%)
35K21.75 mi0.75 mi16955+10310972+4110972+4114278(Top 54%)9556(Top 63%)9556(Top 181%)
23M23.00 mi1.25 mi16823+13210890+8210890+8214663(Top 55%)9665(Top 64%)9665(Top 183%)
24M24.00 mi1.00 mi16687+13610815+7510815+7513962(Top 52%)9298(Top 61%)9298(Top 176%)
40K24.85 mi0.85 mi16633+5410770+4510770+4515336(Top 58%)9834(Top 65%)9834(Top 186%)
25.2M25.20 mi0.35 mi16600+3310749+2110749+2115249(Top 57%)9790(Top 65%)9790(Top 185%)
Finish26.22 mi1.02 mi16598+210738+1110738+1116830(Top 63%)10531(Top 69%)10531(Top 199%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 65%
×21story building
+97ft-345ft

Overall

17410

Males

11227

M18-39

11227

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

18019

Males

11512

M18-39

11512

10K→15K

6.2 - 9.3 mi

Top 65%
×3story building
+67ft-78ft

Overall

17410

Males

11227

M18-39

11227

15K→20K

9.3 - 12.4 mi

Top 64%
×5story building
+106ft-86ft

Overall

16970

Males

11039

M18-39

11039

20K→Half

12.4 - 13.1 mi

Top 61%
×2story building
+19ft-37ft

Overall

16330

Males

10816

M18-39

10816

Half→25K

13.1 - 15.5 mi

Top 64%
×4story building
+66ft-88ft

Overall

16995

Males

10970

M18-39

10970

25K→30K

15.5 - 18.6 mi

Top 57%
×9story building
+181ft-148ft

Overall

15204

Males

10128

M18-39

10128

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

14316

Males

9700

M18-39

9700

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

13503

Males

9281

M18-39

9281

21M→35K

21.0 - 21.8 mi

Top 54%
×7story building
+17ft-86ft

Overall

14278

Males

9556

M18-39

9556

35K→23M

21.8 - 23.0 mi

Top 55%
×5story building
+23ft-63ft

Overall

14663

Males

9665

M18-39

9665

23M→24M

23.0 - 24.0 mi

Top 52%
×6story building
+12ft-82ft

Overall

13962

Males

9298

M18-39

9298

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15336

Males

9834

M18-39

9834

40K→25.2M

24.9 - 25.2 mi

Top 57%
×1story
+13ft-16ft

Overall

15249

Males

9790

M18-39

9790

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2story building
+22ft-21ft

Overall

16830

Males

10531

M18-39

10531

Passing Analysis

Category:
Athletes Passed
4630
Passed By
258
Net Change
+4372
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20970
5K → 10K133825+1313#20970#19657
10K → 15K75520+735#19657#18922
15K → 20K49318+475#18922#18447
20K → Half1190+119#18447#18328
Half → 25K27632+244#18328#18084
25K → 30K5689+559#18084#17525
30K → 20M2502+248#17525#17277
20M → 21M2256+219#17277#17058
21M → 35K11310+103#17058#16955
35K → 23M15725+132#16955#16823
23M → 24M14812+136#16823#16687
24M → 40K8430+54#16687#16633
40K → 25.2M5017+33#16633#16600
25.2M → Finish5452+2#16600#16598
TOTALS4630258+4372
📊

Passing Visuals

Category:
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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