Boston Marathon logo
BOSTON MARATHON 2023

John Anderson

Bib: 3894•M

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 12%
Gender (Male)
#0 / 15176
Top 20%
Division (M18-39)
#0 / 5285
Top 42%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:45
Rank: #1639
Start → 5K
19:45 | 6:21/mi
10K· 6.21 mi
39:32
Rank: #1822 (-183)
5K → 10K
19:47 | 6:22/mi
15K· 9.32 mi
59:38
Rank: #1996 (-174)
10K → 15K
20:06 | 6:28/mi
20K· 12.43 mi
1:20:06
Rank: #2177 (-181)
15K → 20K
20:28 | 6:35/mi
Half· 13.11 mi
1:24:34
Rank: #2205 (-28)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:40:34
Rank: #2276 (-71)
Half → 25K
16:00 | 6:36/mi
30K· 18.64 mi
2:02:11
Rank: #2500 (-224)
25K → 30K
21:37 | 6:57/mi
20M
2:11:37
Rank: #2547 (-47)
30K → 20M
9:26 | 6:57/mi
21M
2:19:08
Rank: #2604 (-57)
20M → 21M
7:31 | 7:31/mi
35K· 21.75 mi
2:24:07
Rank: #2600 (+4)
21M → 35K
4:59 | 6:40/mi
23M
2:32:50
Rank: #2617 (-17)
35K → 23M
8:43 | 6:58/mi
24M
2:39:42
Rank: #2665 (-48)
23M → 24M
6:52 | 6:52/mi
40K· 24.85 mi
2:46:11
Rank: #2825 (-160)
24M → 40K
6:29 | 7:35/mi
25.2M
2:48:58
Rank: #2883 (-58)
40K → 25.2M
2:47 | 8:04/mi
Finish· 26.22 mi
2:56:55
Rank: #3168 (-285)
25.2M → Finish
7:57 | 7:48/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
Time1:24:34
Pace6:27 /mi
2nd Half
Distance13.11 mi
Time1:32:21
Pace7:03 /mi
📊Positive Split: 9.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:5619:456:2119:45
6:21
-
10K
6.21 mi10:40:4339:326:2219:47
6:22
+0:01
15K
9.32 mi11:00:4959:386:2420:06
6:28
+0:06
20K
12.43 mi11:21:171:20:066:2720:28
6:35
+0:07
Half
13.11 mi11:25:451:24:346:274:28
6:33
-0:02
25K
15.53 mi11:41:451:40:346:2816:00
6:36
+0:03
30K
18.64 mi12:03:222:02:116:3321:37
6:57
+0:21
20M
20.00 mi12:12:482:11:376:359:26
6:57
0:00
21M
21.00 mi12:20:192:19:086:387:31
7:31
+0:34
35K
21.75 mi12:25:182:24:076:384:59
6:40
-0:51
23M
23.00 mi12:34:012:32:506:398:43
6:58
+0:18
24M
24.00 mi12:40:532:39:426:396:52
6:52
-0:06
40K
24.85 mi12:47:222:46:116:416:29
7:35
+0:43
25.2M
25.20 mi12:50:092:48:586:422:47
8:04
+0:29
Finish
26.22 mi12:58:062:56:556:457:57
7:48
-0:16

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

6:21 /mi

Average Pace

6:45 /mi

Slowest Pace

8:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:40:34

57% of race

Time at Steady Pace

51:37

29% of race

Time at Slower Pace

24:44

14% of race

Average Pace: 6:45 /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 mi10:20:5619:456:2119:45
6:21
#1639
10K
6.21 mi10:40:4339:326:2219:47
6:22
#1822
15K
9.32 mi11:00:4959:386:2420:06
6:28
#1996
20K
12.43 mi11:21:171:20:066:2720:28
6:35
#2177
Half
13.11 mi11:25:451:24:346:274:28
6:33
#2205
25K
15.53 mi11:41:451:40:346:2816:00
6:36
#2276
30K
18.64 mi12:03:222:02:116:3321:37
6:57
#2500
20M
20.00 mi12:12:482:11:376:359:26
6:57
#2547
21M
21.00 mi12:20:192:19:086:387:31
7:31
#2604
35K
21.75 mi12:25:182:24:076:384:59
6:40
#2600
23M
23.00 mi12:34:012:32:506:398:43
6:58
#2617
24M
24.00 mi12:40:532:39:426:396:52
6:52
#2665
40K
24.85 mi12:47:222:46:116:416:29
7:35
#2825
25.2M
25.20 mi12:50:092:48:586:422:47
8:04
#2883
Finish
26.22 mi12:58:062:56:556:457:57
7:48
#3168
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1639156215622462(Top 9%)2362(Top 16%)2362(Top 45%)
10K6.21 mi3.10 mi1822-1831743-1811743-1812078(Top 8%)1989(Top 13%)1989(Top 38%)
15K9.32 mi3.11 mi1996-1741911-1681911-1682462(Top 9%)2362(Top 16%)2362(Top 45%)
20K12.43 mi3.11 mi2177-1812085-1742085-1742771(Top 10%)2650(Top 17%)2650(Top 50%)
Half13.11 mi0.68 mi2205-282112-272112-273084(Top 12%)2949(Top 19%)2949(Top 56%)
25K15.53 mi2.42 mi2276-712182-702182-702715(Top 10%)2599(Top 17%)2599(Top 49%)
30K18.64 mi3.11 mi2500-2242392-2102392-2104053(Top 15%)3783(Top 25%)3783(Top 72%)
20M20.00 mi1.36 mi2547-472436-442436-443648(Top 14%)3400(Top 22%)3400(Top 64%)
21M21.00 mi1.00 mi2604-572492-562492-564626(Top 17%)4192(Top 28%)4192(Top 79%)
35K21.75 mi0.75 mi2600+42485+72485+73330(Top 13%)3100(Top 20%)3100(Top 59%)
23M23.00 mi1.25 mi2617-172502-172502-173566(Top 13%)3305(Top 22%)3305(Top 63%)
24M24.00 mi1.00 mi2665-482544-422544-423993(Top 15%)3641(Top 24%)3641(Top 69%)
40K24.85 mi0.85 mi2825-1602686-1422686-1427164(Top 27%)5712(Top 38%)5712(Top 108%)
25.2M25.20 mi0.35 mi2883-582740-542740-546790(Top 26%)5422(Top 36%)5422(Top 103%)
Finish26.22 mi1.02 mi3168-2852998-2582998-25810632(Top 40%)7597(Top 50%)7597(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 9%
×21stories
+97ft-345ft

Overall

2462

Males

2362

M18-39

2362

5K→10K

3.1 - 6.2 mi

Top 8%
×5stories
+79ft-138ft

Overall

2078

Males

1989

M18-39

1989

10K→15K

6.2 - 9.3 mi

Top 9%
×3stories
+67ft-78ft

Overall

2462

Males

2362

M18-39

2362

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2771

Males

2650

M18-39

2650

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3084

Males

2949

M18-39

2949

Half→25K

13.1 - 15.5 mi

Top 10%
×4stories
+66ft-88ft

Overall

2715

Males

2599

M18-39

2599

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4053

Males

3783

M18-39

3783

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

3648

Males

3400

M18-39

3400

20M→21M

20.0 - 21.0 mi

Top 17%
×8stories
+106ft-24ft

Overall

4626

Males

4192

M18-39

4192

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3330

Males

3100

M18-39

3100

35K→23M

21.8 - 23.0 mi

Top 13%
×5stories
+23ft-63ft

Overall

3566

Males

3305

M18-39

3305

23M→24M

23.0 - 24.0 mi

Top 15%
×6stories
+12ft-82ft

Overall

3993

Males

3641

M18-39

3641

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7164

Males

5712

M18-39

5712

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

6790

Males

5422

M18-39

5422

25.2M→Finish

25.2 - 26.2 mi

Top 40%
×2stories
+22ft-21ft

Overall

10632

Males

7597

M18-39

7597

Passing Analysis

Category:
Athletes Passed
274
Passed By
1803
Net Change
-1529
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1639
5K → 10K31214-183#1639#1822
10K → 15K18192-174#1822#1996
15K → 20K23204-181#1996#2177
20K → Half331-28#2177#2205
Half → 25K2495-71#2205#2276
25K → 30K22246-224#2276#2500
30K → 20M2269-47#2500#2547
20M → 21M2077-57#2547#2604
21M → 35K2218+4#2604#2600
35K → 23M4057-17#2600#2617
23M → 24M3179-48#2617#2665
24M → 40K7167-160#2665#2825
40K → 25.2M866-58#2825#2883
25.2M → Finish3288-285#2883#3168
TOTALS2741803-1529
📊

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