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BOSTON MARATHON 2023

Ben Johnstone

Bib: 10637 M AU

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:42/mi
27:03
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:48/mi
54:23
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:19/mi
1:23:21
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
8:55/mi
1:51:02
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:02/mi
1:57:12
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:20/mi
2:19:50
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
8:43/mi
2:46:54
↑ 181↓ 1480.2%
138 ft elev
20M
8:05/mi
2:57:53
↑ 64↓ 500.2%
148 ft elev
21M
9:01/mi
3:06:54
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:53/mi
3:12:48
↑ 17↓ 861.7%
156 ft elev
23M
8:06/mi
3:22:56
↑ 23↓ 630.6%
116 ft elev
24M
8:12/mi
3:31:08
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:10/mi
3:38:07
↓ 200.3%
20 ft elev
25.2M
9:14/mi
3:41:18
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:19/mi
3:49:46
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
Distance13.11 mi
Time1:57:12
Pace8:56 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:52:34
Pace8:35 /mi
📊Negative Split: 4.0% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1027:038:4227:03
8:42
-
10K
6.21 mi11:20:3054:238:4527:20
8:48
+0:06
15K
9.32 mi11:49:281:23:218:5728:58
9:19
+0:31
20K
12.43 mi12:17:091:51:028:5627:41
8:55
-0:24
Half
13.11 mi12:23:191:57:128:566:10
9:02
+0:07
25K
15.53 mi12:45:572:19:509:0022:38
9:20
+0:18
30K
18.64 mi13:13:012:46:548:5727:04
8:43
-0:37
20M
20.00 mi13:24:002:57:538:5410:59
8:05
-0:38
21M
21.00 mi13:33:013:06:548:549:01
9:01
+0:56
35K
21.75 mi13:38:553:12:488:525:54
7:53
-1:08
23M
23.00 mi13:49:033:22:568:4910:08
8:06
+0:13
24M
24.00 mi13:57:153:31:088:488:12
8:12
+0:06
40K
24.85 mi14:04:143:38:078:476:59
8:10
-0:02
25.2M
25.20 mi14:07:253:41:188:473:11
9:14
+1:04
Finish
26.22 mi14:15:533:49:468:468:28
8:19
-0:55

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

7:53 /mi

Average Pace

8:46 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

50:40

22% of race

Time at Steady Pace

2:07:30

55% of race

Time at Slower Pace

51:36

22% of race

Average Pace: 8:46 /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 mi10:53:1027:038:4227:03
8:42
#18925
10K
6.21 mi11:20:3054:238:4527:20
8:48
#19413
15K
9.32 mi11:49:281:23:218:5728:58
9:19
#20303
20K
12.43 mi12:17:091:51:028:5627:41
8:55
#20032
Half
13.11 mi12:23:191:57:128:566:10
9:02
#20077
25K
15.53 mi12:45:572:19:509:0022:38
9:20
#20122
30K
18.64 mi13:13:012:46:548:5727:04
8:43
#19369
20M
20.00 mi13:24:002:57:538:5410:59
8:05
#18842
21M
21.00 mi13:33:013:06:548:549:01
9:01
#18554
35K
21.75 mi13:38:553:12:488:525:54
7:53
#18300
23M
23.00 mi13:49:033:22:568:4910:08
8:06
#17900
24M
24.00 mi13:57:153:31:088:488:12
8:12
#17687
40K
24.85 mi14:04:143:38:078:476:59
8:10
#17453
25.2M
25.20 mi14:07:253:41:188:473:11
9:14
#17399
Finish
26.22 mi14:15:533:49:468:468:28
8:19
#17291
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi18925117481174821706(Top 82%)13066(Top 86%)13066(Top 580%)
10K6.21 mi3.10 mi19413-48811983-23511983-23519900(Top 75%)12236(Top 81%)12236(Top 543%)
15K9.32 mi3.11 mi20303-89012376-39312376-39321706(Top 82%)13066(Top 86%)13066(Top 580%)
20K12.43 mi3.11 mi20032+27112271+10512271+10519246(Top 72%)11985(Top 79%)11985(Top 532%)
Half13.11 mi0.68 mi20077-4512297-2612297-2620555(Top 77%)12527(Top 83%)12527(Top 556%)
25K15.53 mi2.42 mi20122-4512326-2912326-2920292(Top 76%)12410(Top 82%)12410(Top 551%)
30K18.64 mi3.11 mi19369+75311991+33511991+33515568(Top 58%)10298(Top 68%)10298(Top 457%)
20M20.00 mi1.36 mi18842+52711756+23511756+23510888(Top 41%)8204(Top 54%)8204(Top 364%)
21M21.00 mi1.00 mi18554+28811627+12911627+12913505(Top 51%)9283(Top 61%)9283(Top 412%)
35K21.75 mi0.75 mi18300+25411502+12511502+12511297(Top 42%)8279(Top 55%)8279(Top 368%)
23M23.00 mi1.25 mi17900+40011322+18011322+18010405(Top 39%)7695(Top 51%)7695(Top 342%)
24M24.00 mi1.00 mi17687+21311224+9811224+9812592(Top 47%)8682(Top 57%)8682(Top 386%)
40K24.85 mi0.85 mi17453+23411117+10711117+10711139(Top 42%)7915(Top 52%)7915(Top 351%)
25.2M25.20 mi0.35 mi17399+5411088+2911088+2913780(Top 52%)9148(Top 60%)9148(Top 406%)
Finish26.22 mi1.02 mi17291+10811034+5411034+5414151(Top 53%)9317(Top 61%)9317(Top 414%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

21706

Males

13066

M45-49

13066

5K→10K

3.1 - 6.2 mi

Top 75%
×5story building
+79ft-138ft

Overall

19900

Males

12236

M45-49

12236

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

21706

Males

13066

M45-49

13066

15K→20K

9.3 - 12.4 mi

Top 72%
×5story building
+106ft-86ft

Overall

19246

Males

11985

M45-49

11985

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

20555

Males

12527

M45-49

12527

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20292

Males

12410

M45-49

12410

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

15568

Males

10298

M45-49

10298

30K→20M

18.6 - 20.0 mi

Top 41%
×5story building
+64ft-50ft

Overall

10888

Males

8204

M45-49

8204

20M→21M

20.0 - 21.0 mi

Top 51%
×8story building
+106ft-24ft

Overall

13505

Males

9283

M45-49

9283

21M→35K

21.0 - 21.8 mi

Top 42%
×7story building
+17ft-86ft

Overall

11297

Males

8279

M45-49

8279

35K→23M

21.8 - 23.0 mi

Top 39%
×5story building
+23ft-63ft

Overall

10405

Males

7695

M45-49

7695

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

12592

Males

8682

M45-49

8682

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11139

Males

7915

M45-49

7915

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13780

Males

9148

M45-49

9148

25.2M→Finish

25.2 - 26.2 mi

Top 53%
×2story building
+22ft-21ft

Overall

14151

Males

9317

M45-49

9317

Passing Analysis

Category:
Athletes Passed
3499
Passed By
1865
Net Change
+1634
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18925
5K → 10K153641-488#18925#19413
10K → 15K24914-890#19413#20303
15K → 20K32958+271#20303#20032
20K → Half1964-45#20032#20077
Half → 25K115160-45#20077#20122
25K → 30K7541+753#20122#19369
30K → 20M5270+527#19369#18842
20M → 21M2880+288#18842#18554
21M → 35K2540+254#18554#18300
35K → 23M4000+400#18300#17900
23M → 24M2141+213#17900#17687
24M → 40K2373+234#17687#17453
40K → 25.2M639+54#17453#17399
25.2M → Finish12214+108#17399#17291
TOTALS34991865+1634
📊

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