Boston Marathon logo
BOSTON MARATHON 2023

Clyde Johnson

KS

Bib: 1453 M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 3%
Gender (Male)
#0 / 15176
Top 4%
Division (M18-39)
#0 / 5285
Top 10%
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
5:56/mi
18:25
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
5:59/mi
37:00
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
5:59/mi
55:36
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:01/mi
1:14:18
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
5:59/mi
1:18:23
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:03/mi
1:33:02
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
6:09/mi
1:52:08
↑ 181↓ 1480.2%
138 ft elev
20M
6:18/mi
2:00:42
↑ 64↓ 500.2%
148 ft elev
21M
6:43/mi
2:07:25
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
6:08/mi
2:12:00
↑ 17↓ 861.7%
156 ft elev
23M
6:29/mi
2:20:07
↑ 23↓ 630.6%
116 ft elev
24M
6:15/mi
2:26:22
↓ 821.3%
34 ft elev
40K· 24.85 mi
6:28/mi
2:31:54
↓ 200.3%
20 ft elev
25.2M
7:03/mi
2:34:20
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:12/mi
2:40:39
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Is this your race?

Claim it for a free AI report on this race

A one-of-a-kind AI Race Performance Report that reads your race like a coach. A plain-English story of how you raced, where you surged and faded, and what it all means. Emailed to you, free.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:18:23
Pace5:59 /mi
2nd Half
Distance13.11 mi
Time1:22:16
Pace6:17 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:4118:255:5618:25
5:56
-
10K
6.21 mi10:37:1637:005:5718:35
5:59
+0:03
15K
9.32 mi10:55:5255:365:5818:36
5:59
0:00
20K
12.43 mi11:14:341:14:185:5918:42
6:01
+0:02
Half
13.11 mi11:18:391:18:235:594:05
5:59
-0:02
25K
15.53 mi11:33:181:33:025:5914:39
6:03
+0:04
30K
18.64 mi11:52:241:52:086:0119:06
6:09
+0:06
20M
20.00 mi12:00:582:00:426:028:34
6:18
+0:09
21M
21.00 mi12:07:412:07:256:046:43
6:43
+0:25
35K
21.75 mi12:12:162:12:006:044:35
6:08
-0:35
23M
23.00 mi12:20:232:20:076:068:07
6:29
+0:21
24M
24.00 mi12:26:382:26:226:066:15
6:15
-0:14
40K
24.85 mi12:32:102:31:546:075:32
6:28
+0:13
25.2M
25.20 mi12:34:362:34:206:072:26
7:03
+0:35
Finish
26.22 mi12:40:552:40:396:086:19
6:12
-0:51

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

5:56 /mi

Average Pace

6:08 /mi

Slowest Pace

7:03 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:31:30

94% of race

Time at Steady Pace

6:43

4% of race

Time at Slower Pace

2:26

2% of race

Average Pace: 6:08 /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 mi10:18:4118:255:5618:25
5:56
#584
10K
6.21 mi10:37:1637:005:5718:35
5:59
#643
15K
9.32 mi10:55:5255:365:5818:36
5:59
#650
20K
12.43 mi11:14:341:14:185:5918:42
6:01
#635
Half
13.11 mi11:18:391:18:235:594:05
5:59
#633
25K
15.53 mi11:33:181:33:025:5914:39
6:03
#618
30K
18.64 mi11:52:241:52:086:0119:06
6:09
#600
20M
20.00 mi12:00:582:00:426:028:34
6:18
#612
21M
21.00 mi12:07:412:07:256:046:43
6:43
#628
35K
21.75 mi12:12:162:12:006:044:35
6:08
#634
23M
23.00 mi12:20:232:20:076:068:07
6:29
#643
24M
24.00 mi12:26:382:26:226:066:15
6:15
#656
40K
24.85 mi12:32:102:31:546:075:32
6:28
#661
25.2M
25.20 mi12:34:362:34:206:072:26
7:03
#673
Finish
26.22 mi12:40:552:40:396:086:19
6:12
#675
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi584541541675(Top 3%)632(Top 4%)632(Top 12%)
10K6.21 mi3.10 mi643-59599-58599-58756(Top 3%)712(Top 5%)712(Top 13%)
15K9.32 mi3.11 mi650-7607-8607-8675(Top 3%)632(Top 4%)632(Top 12%)
20K12.43 mi3.11 mi635+15592+15592+15593(Top 2%)553(Top 4%)553(Top 10%)
Half13.11 mi0.68 mi633+2590+2590+2714(Top 3%)673(Top 4%)673(Top 13%)
25K15.53 mi2.42 mi618+15577+13577+13613(Top 2%)573(Top 4%)573(Top 11%)
30K18.64 mi3.11 mi600+18560+17560+17584(Top 2%)548(Top 4%)548(Top 10%)
20M20.00 mi1.36 mi612-12572-12572-12870(Top 3%)829(Top 5%)829(Top 16%)
21M21.00 mi1.00 mi628-16587-15587-151121(Top 4%)1067(Top 7%)1067(Top 20%)
35K21.75 mi0.75 mi634-6593-6593-6989(Top 4%)939(Top 6%)939(Top 18%)
23M23.00 mi1.25 mi643-9602-9602-91345(Top 5%)1274(Top 8%)1274(Top 24%)
24M24.00 mi1.00 mi656-13615-13615-131163(Top 4%)1100(Top 7%)1100(Top 21%)
40K24.85 mi0.85 mi661-5620-5620-51420(Top 5%)1339(Top 9%)1339(Top 25%)
25.2M25.20 mi0.35 mi673-12632-12632-121855(Top 7%)1738(Top 11%)1738(Top 33%)
Finish26.22 mi1.02 mi675-2633-1633-11253(Top 5%)1186(Top 8%)1186(Top 22%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 3%
×21story building
+97ft-345ft

Overall

675

Males

632

M18-39

632

5K→10K

3.1 - 6.2 mi

Top 3%
×5story building
+79ft-138ft

Overall

756

Males

712

M18-39

712

10K→15K

6.2 - 9.3 mi

Top 3%
×3story building
+67ft-78ft

Overall

675

Males

632

M18-39

632

15K→20K

9.3 - 12.4 mi

Top 2%
×5story building
+106ft-86ft

Overall

593

Males

553

M18-39

553

20K→Half

12.4 - 13.1 mi

Top 3%
×2story building
+19ft-37ft

Overall

714

Males

673

M18-39

673

Half→25K

13.1 - 15.5 mi

Top 2%
×4story building
+66ft-88ft

Overall

613

Males

573

M18-39

573

25K→30K

15.5 - 18.6 mi

Top 2%
×9story building
+181ft-148ft

Overall

584

Males

548

M18-39

548

30K→20M

18.6 - 20.0 mi

Top 3%
×5story building
+64ft-50ft

Overall

870

Males

829

M18-39

829

20M→21M

20.0 - 21.0 mi

Top 4%
×8story building
+106ft-24ft

Overall

1121

Males

1067

M18-39

1067

21M→35K

21.0 - 21.8 mi

Top 4%
×7story building
+17ft-86ft

Overall

989

Males

939

M18-39

939

35K→23M

21.8 - 23.0 mi

Top 5%
×5story building
+23ft-63ft

Overall

1345

Males

1274

M18-39

1274

23M→24M

23.0 - 24.0 mi

Top 4%
×6story building
+12ft-82ft

Overall

1163

Males

1100

M18-39

1100

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1420

Males

1339

M18-39

1339

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1855

Males

1738

M18-39

1738

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2story building
+22ft-21ft

Overall

1253

Males

1186

M18-39

1186

Passing Analysis

Category:
Athletes Passed
159
Passed By
250
Net Change
-91
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#584
5K → 10K867-59#584#643
10K → 15K1522-7#643#650
15K → 20K249+15#650#635
20K → Half42+2#635#633
Half → 25K238+15#633#618
25K → 30K3012+18#618#600
30K → 20M1022-12#600#612
20M → 21M521-16#612#628
21M → 35K39-6#628#634
35K → 23M1221-9#634#643
23M → 24M417-13#643#656
24M → 40K914-5#656#661
40K → 25.2M214-12#661#673
25.2M → Finish1012-2#673#675
TOTALS159250-91
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing