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BOSTON MARATHON 2023

Kenneth Ralston

Bib: 3048•M

PA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 19%
Gender (Male)
#0 / 15176
Top 31%
Masters (Masters Men)
#0 / 9891
Top 17%
Division (M40-44)
#0 / 2241
Top 40%
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
6:59/mi
21:43
↑ 97↓ 3451.5%
10K· 6.21 mi
6:31/mi
41:57
↑ 79↓ 1380.4%
15K· 9.32 mi
6:31/mi
1:02:12
↑ 67↓ 78
20K· 12.43 mi
6:41/mi
1:22:59
↑ 106↓ 860.1%
Half· 13.11 mi
6:37/mi
1:27:30
↑ 19↓ 370.5%
25K· 15.53 mi
6:47/mi
1:43:57
↑ 66↓ 880.2%
30K· 18.64 mi
7:09/mi
2:06:09
↑ 181↓ 1480.2%
20M
7:40/mi
2:16:34
↑ 64↓ 500.2%
21M
7:40/mi
2:24:14
↑ 106↓ 241.6%
35K· 21.75 mi
7:16/mi
2:29:40
↑ 17↓ 861.7%
23M
7:35/mi
2:39:10
↑ 23↓ 630.6%
24M
7:27/mi
2:46:37
↓ 821.3%
40K· 24.85 mi
7:57/mi
2:53:25
↓ 200.3%
25.2M
8:45/mi
2:56:26
↑ 13↓ 160.2%
Finish· 26.22 mi
7:39/mi
3:04:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:30
Pace6:40 /mi
2nd Half
Distance13.11 mi
Time1:36:44
Pace7:23 /mi
📊Positive Split: 10.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0021:436:5921:43
6:59
-
10K
6.21 mi10:43:1441:576:4520:14
6:31
-0:28
15K
9.32 mi11:03:291:02:126:4020:15
6:31
0:00
20K
12.43 mi11:24:161:22:596:4120:47
6:41
+0:10
Half
13.11 mi11:28:471:27:306:404:31
6:37
-0:04
25K
15.53 mi11:45:141:43:576:4116:27
6:47
+0:10
30K
18.64 mi12:07:262:06:096:4622:12
7:09
+0:22
20M
20.00 mi12:17:512:16:346:5010:25
7:40
+0:31
21M
21.00 mi12:25:312:24:146:527:40
7:40
0:00
35K
21.75 mi12:30:572:29:406:535:26
7:16
-0:24
23M
23.00 mi12:40:272:39:106:559:30
7:35
+0:19
24M
24.00 mi12:47:542:46:376:577:27
7:27
-0:08
40K
24.85 mi12:54:422:53:256:596:48
7:57
+0:30
25.2M
25.20 mi12:57:432:56:267:003:01
8:45
+0:48
Finish
26.22 mi13:05:313:04:147:027:48
7:39
-1:06

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

6:31 /mi

Average Pace

7:02 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:14

45% of race

Time at Steady Pace

56:48

31% of race

Time at Slower Pace

45:12

25% of race

Average Pace: 7:02 /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 mi10:23:0021:436:5921:43
6:59
#6182
10K
6.21 mi10:43:1441:576:4520:14
6:31
#4498
15K
9.32 mi11:03:291:02:126:4020:15
6:31
#3756
20K
12.43 mi11:24:161:22:596:4120:47
6:41
#3672
Half
13.11 mi11:28:471:27:306:404:31
6:37
#3666
25K
15.53 mi11:45:141:43:576:4116:27
6:47
#3704
30K
18.64 mi12:07:262:06:096:4622:12
7:09
#4011
20M
20.00 mi12:17:512:16:346:5010:25
7:40
#4407
21M
21.00 mi12:25:312:24:146:527:40
7:40
#4481
35K
21.75 mi12:30:572:29:406:535:26
7:16
#4597
23M
23.00 mi12:40:272:39:106:559:30
7:35
#4717
24M
24.00 mi12:47:542:46:376:577:27
7:27
#4820
40K
24.85 mi12:54:422:53:256:596:48
7:57
#4943
25.2M
25.20 mi12:57:432:56:267:003:01
8:45
#4997
Finish
26.22 mi13:05:313:04:147:027:48
7:39
#5089
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi6182564056402752(Top 10%)2629(Top 17%)2629(Top 117%)
10K6.21 mi3.10 mi4498+16844205+14354205+14352889(Top 11%)2761(Top 18%)2761(Top 123%)
15K9.32 mi3.11 mi3756+7423545+6603545+6602752(Top 10%)2629(Top 17%)2629(Top 117%)
20K12.43 mi3.11 mi3672+843475+703475+703511(Top 13%)3325(Top 22%)3325(Top 148%)
Half13.11 mi0.68 mi3666+63468+73468+73647(Top 14%)3455(Top 23%)3455(Top 154%)
25K15.53 mi2.42 mi3704-383501-333501-334030(Top 15%)3781(Top 25%)3781(Top 169%)
30K18.64 mi3.11 mi4011-3073775-2743775-2745174(Top 19%)4739(Top 31%)4739(Top 211%)
20M20.00 mi1.36 mi4407-3964115-3404115-3407983(Top 30%)6574(Top 43%)6574(Top 293%)
21M21.00 mi1.00 mi4481-744182-674182-675400(Top 20%)4753(Top 31%)4753(Top 212%)
35K21.75 mi0.75 mi4597-1164281-994281-996850(Top 26%)5784(Top 38%)5784(Top 258%)
23M23.00 mi1.25 mi4717-1204384-1034384-1036965(Top 26%)5793(Top 38%)5793(Top 259%)
24M24.00 mi1.00 mi4820-1034465-814465-817332(Top 28%)5902(Top 39%)5902(Top 263%)
40K24.85 mi0.85 mi4943-1234554-894554-899675(Top 36%)7153(Top 47%)7153(Top 319%)
25.2M25.20 mi0.35 mi4997-544601-474601-4710906(Top 41%)7717(Top 51%)7717(Top 344%)
Finish26.22 mi1.02 mi5089-924670-694670-699616(Top 36%)7067(Top 47%)7067(Top 315%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21story building
+97ft-345ft

Overall

2752

Males

2629

M40-44

2629

5K→10K

3.1 - 6.2 mi

Top 11%
×5story building
+79ft-138ft

Overall

2889

Males

2761

M40-44

2761

10K→15K

6.2 - 9.3 mi

Top 10%
×3story building
+67ft-78ft

Overall

2752

Males

2629

M40-44

2629

15K→20K

9.3 - 12.4 mi

Top 13%
×5story building
+106ft-86ft

Overall

3511

Males

3325

M40-44

3325

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

3647

Males

3455

M40-44

3455

Half→25K

13.1 - 15.5 mi

Top 15%
×4story building
+66ft-88ft

Overall

4030

Males

3781

M40-44

3781

25K→30K

15.5 - 18.6 mi

Top 19%
×9story building
+181ft-148ft

Overall

5174

Males

4739

M40-44

4739

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

7983

Males

6574

M40-44

6574

20M→21M

20.0 - 21.0 mi

Top 20%
×8story building
+106ft-24ft

Overall

5400

Males

4753

M40-44

4753

21M→35K

21.0 - 21.8 mi

Top 26%
×7story building
+17ft-86ft

Overall

6850

Males

5784

M40-44

5784

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

6965

Males

5793

M40-44

5793

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7332

Males

5902

M40-44

5902

24M→40K

24.0 - 24.9 mi

Top 36%
×1story
+6ft-20ft

Overall

9675

Males

7153

M40-44

7153

40K→25.2M

24.9 - 25.2 mi

Top 41%
×1story
+13ft-16ft

Overall

10906

Males

7717

M40-44

7717

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

9616

Males

7067

M40-44

7067

Passing Analysis

Category:
Athletes Passed
2868
Passed By
1775
Net Change
+1093
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6182
5K → 10K16873+1684#6182#4498
10K → 15K7453+742#4498#3756
15K → 20K14359+84#3756#3672
20K → Half1711+6#3672#3666
Half → 25K73111-38#3666#3704
25K → 30K40347-307#3704#4011
30K → 20M10406-396#4011#4407
20M → 21M40114-74#4407#4481
21M → 35K19135-116#4481#4597
35K → 23M39159-120#4597#4717
23M → 24M20123-103#4717#4820
24M → 40K15138-123#4820#4943
40K → 25.2M559-54#4943#4997
25.2M → Finish15107-92#4997#5089
TOTALS28681775+1093
📊

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