Boston Marathon logo
BOSTON MARATHON 2023

Scott Salwey

Bib: 4524•M

IL

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 10%
Gender (Male)
#0 / 15176
Top 17%
Division (M18-39)
#0 / 5285
Top 38%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:08
Rank: #4676
Start → 5K
21:08 | 6:48/mi
10K· 6.21 mi
41:36
Rank: #3911 (+765)
5K → 10K
20:28 | 6:35/mi
15K· 9.32 mi
1:02:01
Rank: #3590 (+321)
10K → 15K
20:25 | 6:34/mi
20K· 12.43 mi
1:22:32
Rank: #3386 (+204)
15K → 20K
20:31 | 6:36/mi
Half· 13.11 mi
1:26:54
Rank: #3300 (+86)
20K → Half
4:22 | 6:24/mi
25K· 15.53 mi
1:42:33
Rank: #3011 (+289)
Half → 25K
15:39 | 6:27/mi
30K· 18.64 mi
2:03:11
Rank: #2794 (+217)
25K → 30K
20:38 | 6:38/mi
20M
2:12:22
Rank: #2743 (+51)
30K → 20M
9:11 | 6:45/mi
21M
2:19:34
Rank: #2719 (+24)
20M → 21M
7:12 | 7:12/mi
35K· 21.75 mi
2:24:33
Rank: #2723 (-4)
21M → 35K
4:59 | 6:40/mi
23M
2:33:07
Rank: #2710 (+13)
35K → 23M
8:34 | 6:51/mi
24M
2:39:49
Rank: #2701 (+9)
23M → 24M
6:42 | 6:42/mi
40K· 24.85 mi
2:45:39
Rank: #2677 (+24)
24M → 40K
5:50 | 6:49/mi
25.2M
2:48:11
Rank: #2689 (-12)
40K → 25.2M
2:32 | 7:21/mi
Finish· 26.22 mi
2:55:12
Rank: #2741 (-52)
25.2M → Finish
7:01 | 6:53/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
Time1:26:54
Pace6:38 /mi
2nd Half
Distance13.11 mi
Time1:28:18
Pace6:44 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0721:086:4821:08
6:48
-
10K
6.21 mi10:43:3541:366:4220:28
6:35
-0:13
15K
9.32 mi11:04:001:02:016:3920:25
6:34
-0:01
20K
12.43 mi11:24:311:22:326:3820:31
6:36
+0:02
Half
13.11 mi11:28:531:26:546:384:22
6:24
-0:12
25K
15.53 mi11:44:321:42:336:3615:39
6:27
+0:03
30K
18.64 mi12:05:102:03:116:3620:38
6:38
+0:11
20M
20.00 mi12:14:212:12:226:379:11
6:45
+0:07
21M
21.00 mi12:21:332:19:346:397:12
7:12
+0:27
35K
21.75 mi12:26:322:24:336:394:59
6:40
-0:32
23M
23.00 mi12:35:062:33:076:398:34
6:51
+0:11
24M
24.00 mi12:41:482:39:496:406:42
6:42
-0:09
40K
24.85 mi12:47:382:45:396:405:50
6:49
+0:07
25.2M
25.20 mi12:50:102:48:116:402:32
7:21
+0:32
Finish
26.22 mi12:57:112:55:126:417:01
6:53
-0:28

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

6:24 /mi

Average Pace

6:41 /mi

Slowest Pace

7:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:45:28

94% of race

Time at Steady Pace

9:44

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:41 /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 mi10:23:0721:086:4821:08
6:48
#4676
10K
6.21 mi10:43:3541:366:4220:28
6:35
#3911
15K
9.32 mi11:04:001:02:016:3920:25
6:34
#3590
20K
12.43 mi11:24:311:22:326:3820:31
6:36
#3386
Half
13.11 mi11:28:531:26:546:384:22
6:24
#3300
25K
15.53 mi11:44:321:42:336:3615:39
6:27
#3011
30K
18.64 mi12:05:102:03:116:3620:38
6:38
#2794
20M
20.00 mi12:14:212:12:226:379:11
6:45
#2743
21M
21.00 mi12:21:332:19:346:397:12
7:12
#2719
35K
21.75 mi12:26:322:24:336:394:59
6:40
#2723
23M
23.00 mi12:35:062:33:076:398:34
6:51
#2710
24M
24.00 mi12:41:482:39:496:406:42
6:42
#2701
40K
24.85 mi12:47:382:45:396:405:50
6:49
#2677
25.2M
25.20 mi12:50:102:48:116:402:32
7:21
#2689
Finish
26.22 mi12:57:112:55:126:417:01
6:53
#2741
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4676435043503058(Top 11%)2916(Top 19%)2916(Top 55%)
10K6.21 mi3.10 mi3911+7653681+6693681+6693399(Top 13%)3228(Top 21%)3228(Top 61%)
15K9.32 mi3.11 mi3590+3213392+2893392+2893058(Top 11%)2916(Top 19%)2916(Top 55%)
20K12.43 mi3.11 mi3386+2043212+1803212+1802869(Top 11%)2737(Top 18%)2737(Top 52%)
Half13.11 mi0.68 mi3300+863138+743138+742251(Top 8%)2161(Top 14%)2161(Top 41%)
25K15.53 mi2.42 mi3011+2892875+2632875+2631983(Top 7%)1899(Top 13%)1899(Top 36%)
30K18.64 mi3.11 mi2794+2172672+2032672+2032151(Top 8%)2054(Top 14%)2054(Top 39%)
20M20.00 mi1.36 mi2743+512621+512621+512562(Top 10%)2429(Top 16%)2429(Top 46%)
21M21.00 mi1.00 mi2719+242598+232598+233074(Top 12%)2878(Top 19%)2878(Top 54%)
35K21.75 mi0.75 mi2723-42603-52603-53306(Top 12%)3076(Top 20%)3076(Top 58%)
23M23.00 mi1.25 mi2710+132589+142589+142882(Top 11%)2692(Top 18%)2692(Top 51%)
24M24.00 mi1.00 mi2701+92576+132576+133092(Top 12%)2867(Top 19%)2867(Top 54%)
40K24.85 mi0.85 mi2677+242555+212555+212925(Top 11%)2692(Top 18%)2692(Top 51%)
25.2M25.20 mi0.35 mi2689-122563-82563-83114(Top 12%)2837(Top 19%)2837(Top 54%)
Finish26.22 mi1.02 mi2741-522607-442607-444510(Top 17%)3918(Top 26%)3918(Top 74%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3058

Males

2916

M18-39

2916

5K→10K

3.1 - 6.2 mi

Top 13%
×5stories
+79ft-138ft

Overall

3399

Males

3228

M18-39

3228

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3058

Males

2916

M18-39

2916

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

2869

Males

2737

M18-39

2737

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2251

Males

2161

M18-39

2161

Half→25K

13.1 - 15.5 mi

Top 7%
×4stories
+66ft-88ft

Overall

1983

Males

1899

M18-39

1899

25K→30K

15.5 - 18.6 mi

Top 8%
×9stories
+181ft-148ft

Overall

2151

Males

2054

M18-39

2054

30K→20M

18.6 - 20.0 mi

Top 10%
×5stories
+64ft-50ft

Overall

2562

Males

2429

M18-39

2429

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3074

Males

2878

M18-39

2878

21M→35K

21.0 - 21.8 mi

Top 12%
×7stories
+17ft-86ft

Overall

3306

Males

3076

M18-39

3076

35K→23M

21.8 - 23.0 mi

Top 11%
×5stories
+23ft-63ft

Overall

2882

Males

2692

M18-39

2692

23M→24M

23.0 - 24.0 mi

Top 12%
×6stories
+12ft-82ft

Overall

3092

Males

2867

M18-39

2867

24M→40K

24.0 - 24.9 mi

Top 11%
×1story
+6ft-20ft

Overall

2925

Males

2692

M18-39

2692

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3114

Males

2837

M18-39

2837

25.2M→Finish

25.2 - 26.2 mi

Top 17%
×2stories
+22ft-21ft

Overall

4510

Males

3918

M18-39

3918

Passing Analysis

Category:
Athletes Passed
2256
Passed By
321
Net Change
+1935
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4676
5K → 10K79025+765#4676#3911
10K → 15K33716+321#3911#3590
15K → 20K21410+204#3590#3386
20K → Half871+86#3386#3300
Half → 25K2890+289#3300#3011
25K → 30K2236+217#3011#2794
30K → 20M6110+51#2794#2743
20M → 21M5228+24#2743#2719
21M → 35K2024-4#2719#2723
35K → 23M5946+13#2723#2710
23M → 24M4637+9#2710#2701
24M → 40K4723+24#2701#2677
40K → 25.2M921-12#2677#2689
25.2M → Finish2274-52#2689#2741
TOTALS2256321+1935
📊

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