Boston Marathon logo
BOSTON MARATHON 2023

Steve Cox

Bib: 5490•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 9%
Gender (Male)
#0 / 15176
Top 14%
Masters (Masters Men)
#0 / 9891
Top 5%
Division (M50-54)
#0 / 2052
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:16
Rank: #2403
Start → 5K
20:16 | 6:31/mi
10K· 6.21 mi
40:23
Rank: #2483 (-80)
5K → 10K
20:07 | 6:28/mi
15K· 9.32 mi
1:00:31
Rank: #2493 (-10)
10K → 15K
20:08 | 6:29/mi
20K· 12.43 mi
1:20:53
Rank: #2495 (-2)
15K → 20K
20:22 | 6:33/mi
Half· 13.11 mi
1:25:15
Rank: #2470 (+25)
20K → Half
4:22 | 6:24/mi
25K· 15.53 mi
1:41:06
Rank: #2454 (+16)
Half → 25K
15:51 | 6:32/mi
30K· 18.64 mi
2:01:41
Rank: #2360 (+94)
25K → 30K
20:35 | 6:38/mi
20M
2:10:47
Rank: #2335 (+25)
30K → 20M
9:06 | 6:42/mi
21M
2:17:42
Rank: #2283 (+52)
20M → 21M
6:55 | 6:55/mi
35K· 21.75 mi
2:22:28
Rank: #2254 (+29)
21M → 35K
4:46 | 6:22/mi
23M
2:30:58
Rank: #2246 (+8)
35K → 23M
8:30 | 6:47/mi
24M
2:37:42
Rank: #2271 (-25)
23M → 24M
6:44 | 6:44/mi
40K· 24.85 mi
2:43:42
Rank: #2292 (-21)
24M → 40K
6:00 | 7:01/mi
25.2M
2:46:14
Rank: #2284 (+8)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
2:52:59
Rank: #2271 (+13)
25.2M → Finish
6:45 | 6:37/mi

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:25:15
Pace6:30 /mi
2nd Half
Distance13.11 mi
Time1:27:44
Pace6:42 /mi
📊Positive Split: 2.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0120:166:3120:16
6:31
-
10K
6.21 mi10:43:0840:236:3020:07
6:28
-0:03
15K
9.32 mi11:03:161:00:316:3020:08
6:29
+0:01
20K
12.43 mi11:23:381:20:536:3120:22
6:33
+0:04
Half
13.11 mi11:28:001:25:156:304:22
6:24
-0:09
25K
15.53 mi11:43:511:41:066:3015:51
6:32
+0:08
30K
18.64 mi12:04:262:01:416:3220:35
6:38
+0:06
20M
20.00 mi12:13:322:10:476:329:06
6:42
+0:04
21M
21.00 mi12:20:272:17:426:336:55
6:55
+0:13
35K
21.75 mi12:25:132:22:286:334:46
6:22
-0:33
23M
23.00 mi12:33:432:30:586:348:30
6:47
+0:25
24M
24.00 mi12:40:272:37:426:346:44
6:44
-0:03
40K
24.85 mi12:46:272:43:426:356:00
7:01
+0:17
25.2M
25.20 mi12:48:592:46:146:362:32
7:21
+0:20
Finish
26.22 mi12:55:442:52:596:366:45
6:37
-0:44

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

6:22 /mi

Average Pace

6:36 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:44:27

95% of race

Time at Steady Pace

8:32

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:36 /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 mi10:23:0120:166:3120:16
6:31
#2403
10K
6.21 mi10:43:0840:236:3020:07
6:28
#2483
15K
9.32 mi11:03:161:00:316:3020:08
6:29
#2493
20K
12.43 mi11:23:381:20:536:3120:22
6:33
#2495
Half
13.11 mi11:28:001:25:156:304:22
6:24
#2470
25K
15.53 mi11:43:511:41:066:3015:51
6:32
#2454
30K
18.64 mi12:04:262:01:416:3220:35
6:38
#2360
20M
20.00 mi12:13:322:10:476:329:06
6:42
#2335
21M
21.00 mi12:20:272:17:426:336:55
6:55
#2283
35K
21.75 mi12:25:132:22:286:334:46
6:22
#2254
23M
23.00 mi12:33:432:30:586:348:30
6:47
#2246
24M
24.00 mi12:40:272:37:426:346:44
6:44
#2271
40K
24.85 mi12:46:272:43:426:356:00
7:01
#2292
25.2M
25.20 mi12:48:592:46:146:362:32
7:21
#2284
Finish
26.22 mi12:55:442:52:596:366:45
6:37
#2271
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi2403229122912523(Top 9%)2419(Top 16%)2419(Top 118%)
10K6.21 mi3.10 mi2483-802368-772368-772641(Top 10%)2525(Top 17%)2525(Top 123%)
15K9.32 mi3.11 mi2493-102381-132381-132523(Top 9%)2419(Top 16%)2419(Top 118%)
20K12.43 mi3.11 mi2495-22388-72388-72588(Top 10%)2476(Top 16%)2476(Top 121%)
Half13.11 mi0.68 mi2470+252367+212367+212230(Top 8%)2140(Top 14%)2140(Top 104%)
25K15.53 mi2.42 mi2454+162351+162351+162366(Top 9%)2266(Top 15%)2266(Top 110%)
30K18.64 mi3.11 mi2360+942262+892262+892070(Top 8%)1977(Top 13%)1977(Top 96%)
20M20.00 mi1.36 mi2335+252240+222240+222251(Top 8%)2140(Top 14%)2140(Top 104%)
21M21.00 mi1.00 mi2283+522187+532187+531826(Top 7%)1738(Top 11%)1738(Top 85%)
35K21.75 mi0.75 mi2254+292160+272160+271864(Top 7%)1770(Top 12%)1770(Top 86%)
23M23.00 mi1.25 mi2246+82151+92151+92574(Top 10%)2415(Top 16%)2415(Top 118%)
24M24.00 mi1.00 mi2271-252176-252176-253257(Top 12%)3012(Top 20%)3012(Top 147%)
40K24.85 mi0.85 mi2292-212193-172193-173899(Top 15%)3502(Top 23%)3502(Top 171%)
25.2M25.20 mi0.35 mi2284+82187+62187+63094(Top 12%)2817(Top 19%)2817(Top 137%)
Finish26.22 mi1.02 mi2271+132175+122175+123079(Top 12%)2774(Top 18%)2774(Top 135%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2523

Males

2419

M50-54

2419

5K→10K

3.1 - 6.2 mi

Top 10%
×5stories
+79ft-138ft

Overall

2641

Males

2525

M50-54

2525

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2523

Males

2419

M50-54

2419

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2588

Males

2476

M50-54

2476

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2230

Males

2140

M50-54

2140

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2366

Males

2266

M50-54

2266

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2070

Males

1977

M50-54

1977

30K→20M

18.6 - 20.0 mi

Top 8%
×5stories
+64ft-50ft

Overall

2251

Males

2140

M50-54

2140

20M→21M

20.0 - 21.0 mi

Top 7%
×8stories
+106ft-24ft

Overall

1826

Males

1738

M50-54

1738

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1864

Males

1770

M50-54

1770

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2574

Males

2415

M50-54

2415

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3257

Males

3012

M50-54

3012

24M→40K

24.0 - 24.9 mi

Top 15%
×1story
+6ft-20ft

Overall

3899

Males

3502

M50-54

3502

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3094

Males

2817

M50-54

2817

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2stories
+22ft-21ft

Overall

3079

Males

2774

M50-54

2774

Passing Analysis

Category:
Athletes Passed
692
Passed By
560
Net Change
+132
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2403
5K → 10K102182-80#2403#2483
10K → 15K6272-10#2483#2493
15K → 20K6062-2#2493#2495
20K → Half272+25#2495#2470
Half → 25K5842+16#2470#2454
25K → 30K11824+94#2454#2360
30K → 20M4823+25#2360#2335
20M → 21M619+52#2335#2283
21M → 35K367+29#2283#2254
35K → 23M3123+8#2254#2246
23M → 24M2752-25#2246#2271
24M → 40K1536-21#2271#2292
40K → 25.2M157+8#2292#2284
25.2M → Finish3219+13#2284#2271
TOTALS692560+132
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing