Boston Marathon logo
BOSTON MARATHON 2023

Reese Walker

Bib: 4481•M

GA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 6%
Gender (Male)
#0 / 15176
Top 10%
Division (M18-39)
#0 / 5285
Top 23%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:11
Rank: #4823
Start → 5K
21:11 | 6:49/mi
10K· 6.21 mi
41:36
Rank: #3907 (+916)
5K → 10K
20:25 | 6:34/mi
15K· 9.32 mi
1:01:45
Rank: #3382 (+525)
10K → 15K
20:09 | 6:29/mi
20K· 12.43 mi
1:21:55
Rank: #3024 (+358)
15K → 20K
20:10 | 6:29/mi
Half· 13.11 mi
1:26:16
Rank: #2948 (+76)
20K → Half
4:21 | 6:23/mi
25K· 15.53 mi
1:41:58
Rank: #2764 (+184)
Half → 25K
15:42 | 6:29/mi
30K· 18.64 mi
2:02:11
Rank: #2497 (+267)
25K → 30K
20:13 | 6:30/mi
20M
2:10:45
Rank: #2328 (+169)
30K → 20M
8:34 | 6:18/mi
21M
2:17:13
Rank: #2172 (+156)
20M → 21M
6:28 | 6:28/mi
35K· 21.75 mi
2:21:46
Rank: #2099 (+73)
21M → 35K
4:33 | 6:05/mi
23M
2:29:44
Rank: #1982 (+117)
35K → 23M
7:58 | 6:22/mi
24M
2:35:47
Rank: #1883 (+99)
23M → 24M
6:03 | 6:03/mi
40K· 24.85 mi
2:40:56
Rank: #1777 (+106)
24M → 40K
5:09 | 6:01/mi
25.2M
2:43:05
Rank: #1717 (+60)
40K → 25.2M
2:09 | 6:14/mi
Finish· 26.22 mi
2:48:53
Rank: #1591 (+126)
25.2M → Finish
5:48 | 5:41/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 Half
Distance13.11 mi
Time1:26:16
Pace6:35 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:22:37
Pace6:18 /mi
📊Negative Split: 4.2% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:3121:116:4921:11
6:49
-
10K
6.21 mi10:43:5641:366:4220:25
6:34
-0:15
15K
9.32 mi11:04:051:01:456:3820:09
6:29
-0:05
20K
12.43 mi11:24:151:21:556:3520:10
6:29
0:00
Half
13.11 mi11:28:361:26:166:354:21
6:23
-0:06
25K
15.53 mi11:44:181:41:586:3415:42
6:29
+0:06
30K
18.64 mi12:04:312:02:116:3320:13
6:30
+0:01
20M
20.00 mi12:13:052:10:456:328:34
6:18
-0:12
21M
21.00 mi12:19:332:17:136:326:28
6:28
+0:10
35K
21.75 mi12:24:062:21:466:314:33
6:05
-0:23
23M
23.00 mi12:32:042:29:446:317:58
6:22
+0:17
24M
24.00 mi12:38:072:35:476:296:03
6:03
-0:19
40K
24.85 mi12:43:162:40:566:285:09
6:01
-0:02
25.2M
25.20 mi12:45:252:43:056:282:09
6:14
+0:13
Finish
26.22 mi12:51:132:48:536:275:48
5:41
-0:33

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

5:41 /mi

Average Pace

6:27 /mi

Slowest Pace

6:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

23:42

14% of race

Time at Steady Pace

2:04:00

73% of race

Time at Slower Pace

21:11

13% of race

Average Pace: 6:26 /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 mi10:23:3121:116:4921:11
6:49
#4823
10K
6.21 mi10:43:5641:366:4220:25
6:34
#3907
15K
9.32 mi11:04:051:01:456:3820:09
6:29
#3382
20K
12.43 mi11:24:151:21:556:3520:10
6:29
#3024
Half
13.11 mi11:28:361:26:166:354:21
6:23
#2948
25K
15.53 mi11:44:181:41:586:3415:42
6:29
#2764
30K
18.64 mi12:04:312:02:116:3320:13
6:30
#2497
20M
20.00 mi12:13:052:10:456:328:34
6:18
#2328
21M
21.00 mi12:19:332:17:136:326:28
6:28
#2172
35K
21.75 mi12:24:062:21:466:314:33
6:05
#2099
23M
23.00 mi12:32:042:29:446:317:58
6:22
#1982
24M
24.00 mi12:38:072:35:476:296:03
6:03
#1883
40K
24.85 mi12:43:162:40:566:285:09
6:01
#1777
25.2M
25.20 mi12:45:252:43:056:282:09
6:14
#1717
Finish
26.22 mi12:51:132:48:536:275:48
5:41
#1591
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi4823448244822543(Top 10%)2438(Top 16%)2438(Top 46%)
10K6.21 mi3.10 mi3907+9163677+8053677+8053270(Top 12%)3112(Top 21%)3112(Top 59%)
15K9.32 mi3.11 mi3382+5253204+4733204+4732543(Top 10%)2438(Top 16%)2438(Top 46%)
20K12.43 mi3.11 mi3024+3582886+3182886+3182216(Top 8%)2126(Top 14%)2126(Top 40%)
Half13.11 mi0.68 mi2948+762815+712815+712068(Top 8%)1984(Top 13%)1984(Top 38%)
25K15.53 mi2.42 mi2764+1842641+1742641+1742039(Top 8%)1953(Top 13%)1953(Top 37%)
30K18.64 mi3.11 mi2497+2672389+2522389+2521584(Top 6%)1516(Top 10%)1516(Top 29%)
20M20.00 mi1.36 mi2328+1692235+1542235+154886(Top 3%)845(Top 6%)845(Top 16%)
21M21.00 mi1.00 mi2172+1562081+1542081+154607(Top 2%)572(Top 4%)572(Top 11%)
35K21.75 mi0.75 mi2099+732012+692012+69895(Top 3%)852(Top 6%)852(Top 16%)
23M23.00 mi1.25 mi1982+1171900+1121900+112998(Top 4%)948(Top 6%)948(Top 18%)
24M24.00 mi1.00 mi1883+991803+971803+97662(Top 2%)627(Top 4%)627(Top 12%)
40K24.85 mi0.85 mi1777+1061699+1041699+104380(Top 1%)355(Top 2%)355(Top 7%)
25.2M25.20 mi0.35 mi1717+601641+581641+58196(Top 0.7%)177(Top 1%)177(Top 3%)
Finish26.22 mi1.02 mi1591+1261521+1201521+120232(Top 0.9%)215(Top 1%)215(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2543

Males

2438

M18-39

2438

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3270

Males

3112

M18-39

3112

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2543

Males

2438

M18-39

2438

15K→20K

9.3 - 12.4 mi

Top 8%
×5stories
+106ft-86ft

Overall

2216

Males

2126

M18-39

2126

20K→Half

12.4 - 13.1 mi

Top 8%
×2stories
+19ft-37ft

Overall

2068

Males

1984

M18-39

1984

Half→25K

13.1 - 15.5 mi

Top 8%
×4stories
+66ft-88ft

Overall

2039

Males

1953

M18-39

1953

25K→30K

15.5 - 18.6 mi

Top 6%
×9stories
+181ft-148ft

Overall

1584

Males

1516

M18-39

1516

30K→20M

18.6 - 20.0 mi

Top 3%
×5stories
+64ft-50ft

Overall

886

Males

845

M18-39

845

20M→21M

20.0 - 21.0 mi

Top 2%
×8stories
+106ft-24ft

Overall

607

Males

572

M18-39

572

21M→35K

21.0 - 21.8 mi

Top 3%
×7stories
+17ft-86ft

Overall

895

Males

852

M18-39

852

35K→23M

21.8 - 23.0 mi

Top 4%
×5stories
+23ft-63ft

Overall

998

Males

948

M18-39

948

23M→24M

23.0 - 24.0 mi

Top 2%
×6stories
+12ft-82ft

Overall

662

Males

627

M18-39

627

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

380

Males

355

M18-39

355

40K→25.2M

24.9 - 25.2 mi

Top 0.7%
×1story
+13ft-16ft

Overall

196

Males

177

M18-39

177

25.2M→Finish

25.2 - 26.2 mi

Top 0.9%
×2stories
+22ft-21ft

Overall

232

Males

215

M18-39

215

Passing Analysis

Category:
Athletes Passed
3266
Passed By
34
Net Change
+3232
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4823
5K → 10K93418+916#4823#3907
10K → 15K5294+525#3907#3382
15K → 20K3591+358#3382#3024
20K → Half793+76#3024#2948
Half → 25K1873+184#2948#2764
25K → 30K2692+267#2764#2497
30K → 20M1690+169#2497#2328
20M → 21M1560+156#2328#2172
21M → 35K741+73#2172#2099
35K → 23M1181+117#2099#1982
23M → 24M990+99#1982#1883
24M → 40K1071+106#1883#1777
40K → 25.2M600+60#1777#1717
25.2M → Finish1260+126#1717#1591
TOTALS326634+3232
📊

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