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BOSTON MARATHON 2023

Jonathan Williams

Bib: 13740•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 36%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Top 40%
Division (M45-49)
#0 / 2252
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
7:46/mi
24:07
↑ 97↓ 3451.5%
10K· 6.21 mi
7:37/mi
47:47
↑ 79↓ 1380.4%
15K· 9.32 mi
8:03/mi
1:12:47
↑ 67↓ 78
20K· 12.43 mi
7:34/mi
1:36:17
↑ 106↓ 860.1%
Half· 13.11 mi
7:27/mi
1:41:22
↑ 19↓ 370.5%
25K· 15.53 mi
7:32/mi
1:59:38
↑ 66↓ 880.2%
30K· 18.64 mi
7:39/mi
2:23:25
↑ 181↓ 1480.2%
20M
7:38/mi
2:33:48
↑ 64↓ 500.2%
21M
8:06/mi
2:41:54
↑ 106↓ 241.6%
35K· 21.75 mi
7:29/mi
2:47:30
↑ 17↓ 861.7%
23M
7:44/mi
2:57:11
↑ 23↓ 630.6%
24M
7:35/mi
3:04:46
↓ 821.3%
40K· 24.85 mi
7:40/mi
3:11:19
↓ 200.3%
25.2M
8:01/mi
3:14:05
↑ 13↓ 160.2%
Finish· 26.22 mi
7:30/mi
3:21:44
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:41:22
Pace7:44 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:40:22
Pace7:39 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:2324:077:4624:07
7:46
-
10K
6.21 mi11:18:0347:477:4123:40
7:37
-0:09
15K
9.32 mi11:43:031:12:477:4925:00
8:03
+0:26
20K
12.43 mi12:06:331:36:177:4523:30
7:34
-0:29
Half
13.11 mi12:11:381:41:227:445:05
7:27
-0:07
25K
15.53 mi12:29:541:59:387:4218:16
7:32
+0:05
30K
18.64 mi12:53:412:23:257:4223:47
7:39
+0:07
20M
20.00 mi13:04:042:33:487:4110:23
7:38
-0:01
21M
21.00 mi13:12:102:41:547:438:06
8:06
+0:28
35K
21.75 mi13:17:462:47:307:425:36
7:29
-0:37
23M
23.00 mi13:27:272:57:117:429:41
7:44
+0:15
24M
24.00 mi13:35:023:04:467:427:35
7:35
-0:09
40K
24.85 mi13:41:353:11:197:426:33
7:40
+0:05
25.2M
25.20 mi13:44:213:14:057:422:46
8:01
+0:21
Finish
26.22 mi13:52:003:21:447:427:39
7:30
-0:31

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

7:27 /mi

Average Pace

7:42 /mi

Slowest Pace

8:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:52

82% of race

Time at Steady Pace

35:52

18% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:42 /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 mi10:54:2324:077:4624:07
7:46
#12014
10K
6.21 mi11:18:0347:477:4123:40
7:37
#11697
15K
9.32 mi11:43:031:12:477:4925:00
8:03
#12763
20K
12.43 mi12:06:331:36:177:4523:30
7:34
#11931
Half
13.11 mi12:11:381:41:227:445:05
7:27
#11824
25K
15.53 mi12:29:541:59:387:4218:16
7:32
#11302
30K
18.64 mi12:53:412:23:257:4223:47
7:39
#10715
20M
20.00 mi13:04:042:33:487:4110:23
7:38
#10478
21M
21.00 mi13:12:102:41:547:438:06
8:06
#10303
35K
21.75 mi13:17:462:47:307:425:36
7:29
#10207
23M
23.00 mi13:27:272:57:117:429:41
7:44
#10028
24M
24.00 mi13:35:023:04:467:427:35
7:35
#9926
40K
24.85 mi13:41:353:11:197:426:33
7:40
#9812
25.2M
25.20 mi13:44:213:14:057:422:46
8:01
#9733
Finish
26.22 mi13:52:003:21:447:427:39
7:30
#9652
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi120149118911814758(Top 55%)10194(Top 67%)10194(Top 453%)
10K6.21 mi3.10 mi11697+3178975+1438975+14311465(Top 43%)8859(Top 58%)8859(Top 393%)
15K9.32 mi3.11 mi12763-10669427-4529427-45214758(Top 55%)10194(Top 67%)10194(Top 453%)
20K12.43 mi3.11 mi11931+8329038+3899038+3899800(Top 37%)7961(Top 52%)7961(Top 354%)
Half13.11 mi0.68 mi11824+1078997+418997+419776(Top 37%)7969(Top 53%)7969(Top 354%)
25K15.53 mi2.42 mi11302+5228752+2458752+2459026(Top 34%)7455(Top 49%)7455(Top 331%)
30K18.64 mi3.11 mi10715+5878439+3138439+3138333(Top 31%)6885(Top 45%)6885(Top 306%)
20M20.00 mi1.36 mi10478+2378303+1368303+1367768(Top 29%)6453(Top 43%)6453(Top 287%)
21M21.00 mi1.00 mi10303+1758188+1158188+1158007(Top 30%)6484(Top 43%)6484(Top 288%)
35K21.75 mi0.75 mi10207+968131+578131+578448(Top 32%)6779(Top 45%)6779(Top 301%)
23M23.00 mi1.25 mi10028+1798010+1218010+1217959(Top 30%)6394(Top 42%)6394(Top 284%)
24M24.00 mi1.00 mi9926+1027918+927918+928282(Top 31%)6487(Top 43%)6487(Top 288%)
40K24.85 mi0.85 mi9812+1147825+937825+937705(Top 29%)6069(Top 40%)6069(Top 269%)
25.2M25.20 mi0.35 mi9733+797776+497776+496648(Top 25%)5374(Top 35%)5374(Top 239%)
Finish26.22 mi1.02 mi9652+817700+767700+768591(Top 32%)6521(Top 43%)6521(Top 290%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14758

Males

10194

M45-49

10194

5K→10K

3.1 - 6.2 mi

Top 43%
×5story building
+79ft-138ft

Overall

11465

Males

8859

M45-49

8859

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14758

Males

10194

M45-49

10194

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9800

Males

7961

M45-49

7961

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

9776

Males

7969

M45-49

7969

Half→25K

13.1 - 15.5 mi

Top 34%
×4story building
+66ft-88ft

Overall

9026

Males

7455

M45-49

7455

25K→30K

15.5 - 18.6 mi

Top 31%
×9story building
+181ft-148ft

Overall

8333

Males

6885

M45-49

6885

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

7768

Males

6453

M45-49

6453

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

8007

Males

6484

M45-49

6484

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

8448

Males

6779

M45-49

6779

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

7959

Males

6394

M45-49

6394

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8282

Males

6487

M45-49

6487

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

7705

Males

6069

M45-49

6069

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6648

Males

5374

M45-49

5374

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2story building
+22ft-21ft

Overall

8591

Males

6521

M45-49

6521

Passing Analysis

Category:
Athletes Passed
3737*
Passed By
1375
Net Change
+2362
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12014
5K → 10K482165+317#12014#11697
10K → 15K221088-1066#11697#12763
15K → 20K8353+832#12763#11931
20K → Half1092+107#11931#11824
Half → 25K5220+522#11824#11302
25K → 30K5947+587#11302#10715
30K → 20M241*4+237#10715#10478
20M → 21M19015+175#10478#10303
21M → 35K1037+96#10303#10207
35K → 23M186*7+179#10207#10028
23M → 24M12927+102#10028#9926
24M → 40K130*16+114#9926#9812
40K → 25.2M812+79#9812#9733
25.2M → Finish113*32+81#9733#9652
TOTALS3737*1375+2362

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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