Boston Marathon logo
BOSTON MARATHON 2023

Jason Hall

Bib: 3434•M

MI

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 13%
Gender (Male)
#0 / 15176
Top 22%
Masters (Masters Men)
#0 / 9891
Top 10%
Division (M45-49)
#0 / 2252
Top 11%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:47/mi
21:04
↑ 97↓ 3451.5%
10K· 6.21 mi
6:51/mi
42:22
↑ 79↓ 1380.4%
15K· 9.32 mi
6:47/mi
1:03:28
↑ 67↓ 78
20K· 12.43 mi
6:47/mi
1:24:33
↑ 106↓ 860.1%
Half· 13.11 mi
6:45/mi
1:29:09
↑ 19↓ 370.5%
25K· 15.53 mi
6:48/mi
1:45:39
↑ 66↓ 880.2%
30K· 18.64 mi
6:56/mi
2:07:13
↑ 181↓ 1480.2%
20M
6:56/mi
2:16:38
↑ 64↓ 500.2%
21M
7:01/mi
2:23:39
↑ 106↓ 241.6%
35K· 21.75 mi
6:41/mi
2:28:39
↑ 17↓ 861.7%
23M
6:43/mi
2:37:03
↑ 23↓ 630.6%
24M
6:30/mi
2:43:33
↓ 821.3%
40K· 24.85 mi
6:40/mi
2:49:15
↓ 200.3%
25.2M
7:00/mi
2:51:40
↑ 13↓ 160.2%
Finish· 26.22 mi
6:30/mi
2:58:17
↑ 22↓ 21

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⚖️ Balanced
Distance13.11 mi
Time1:29:09
Pace6:48 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:08
Pace6:48 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:1221:046:4721:04
6:47
-
10K
6.21 mi10:43:3042:226:4921:18
6:51
+0:04
15K
9.32 mi11:04:361:03:286:4921:06
6:47
-0:04
20K
12.43 mi11:25:411:24:336:4821:05
6:47
0:00
Half
13.11 mi11:30:171:29:096:484:36
6:45
-0:02
25K
15.53 mi11:46:471:45:396:4816:30
6:48
+0:03
30K
18.64 mi12:08:212:07:136:4921:34
6:56
+0:08
20M
20.00 mi12:17:462:16:386:509:25
6:56
0:00
21M
21.00 mi12:24:472:23:396:507:01
7:01
+0:05
35K
21.75 mi12:29:472:28:396:505:00
6:41
-0:20
23M
23.00 mi12:38:112:37:036:508:24
6:43
+0:02
24M
24.00 mi12:44:412:43:336:496:30
6:30
-0:13
40K
24.85 mi12:50:232:49:156:495:42
6:40
+0:10
25.2M
25.20 mi12:52:482:51:406:492:25
7:00
+0:20
Finish
26.22 mi12:59:252:58:176:486:37
6:30
-0:30

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

6:30 /mi

Average Pace

6:48 /mi

Slowest Pace

7:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:34

65% of race

Time at Steady Pace

1:01:43

35% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:48 /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 mi10:22:1221:046:4721:04
6:47
#4474
10K
6.21 mi10:43:3042:226:4921:18
6:51
#5101
15K
9.32 mi11:04:361:03:286:4921:06
6:47
#5066
20K
12.43 mi11:25:411:24:336:4821:05
6:47
#4876
Half
13.11 mi11:30:171:29:096:484:36
6:45
#4863
25K
15.53 mi11:46:471:45:396:4816:30
6:48
#4704
30K
18.64 mi12:08:212:07:136:4921:34
6:56
#4524
20M
20.00 mi12:17:462:16:386:509:25
6:56
#4436
21M
21.00 mi12:24:472:23:396:507:01
7:01
#4224
35K
21.75 mi12:29:472:28:396:505:00
6:41
#4179
23M
23.00 mi12:38:112:37:036:508:24
6:43
#3997
24M
24.00 mi12:44:412:43:336:496:30
6:30
#3856
40K
24.85 mi12:50:232:49:156:495:42
6:40
#3739
25.2M
25.20 mi12:52:482:51:406:492:25
7:00
#3675
Finish
26.22 mi12:59:252:58:176:486:37
6:30
#3579
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4474417641765004(Top 19%)4644(Top 31%)4644(Top 206%)
10K6.21 mi3.10 mi5101-6274728-5524728-5525783(Top 22%)5284(Top 35%)5284(Top 235%)
15K9.32 mi3.11 mi5066+354702+264702+265004(Top 19%)4644(Top 31%)4644(Top 206%)
20K12.43 mi3.11 mi4876+1904541+1614541+1614294(Top 16%)4011(Top 26%)4011(Top 178%)
Half13.11 mi0.68 mi4863+134528+134528+134664(Top 18%)4326(Top 29%)4326(Top 192%)
25K15.53 mi2.42 mi4704+1594381+1474381+1474177(Top 16%)3908(Top 26%)3908(Top 174%)
30K18.64 mi3.11 mi4524+1804224+1574224+1573938(Top 15%)3681(Top 24%)3681(Top 163%)
20M20.00 mi1.36 mi4436+884142+824142+823587(Top 13%)3346(Top 22%)3346(Top 149%)
21M21.00 mi1.00 mi4224+2123954+1883954+1882235(Top 8%)2113(Top 14%)2113(Top 94%)
35K21.75 mi0.75 mi4179+453911+433911+433457(Top 13%)3209(Top 21%)3209(Top 142%)
23M23.00 mi1.25 mi3997+1823749+1623749+1622223(Top 8%)2096(Top 14%)2096(Top 93%)
24M24.00 mi1.00 mi3856+1413622+1273622+1272115(Top 8%)1985(Top 13%)1985(Top 88%)
40K24.85 mi0.85 mi3739+1173515+1073515+1072211(Top 8%)2062(Top 14%)2062(Top 92%)
25.2M25.20 mi0.35 mi3675+643457+583457+581808(Top 7%)1701(Top 11%)1701(Top 76%)
Finish26.22 mi1.02 mi3579+963368+893368+892449(Top 9%)2257(Top 15%)2257(Top 100%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21story building
+97ft-345ft

Overall

5004

Males

4644

M45-49

4644

5K→10K

3.1 - 6.2 mi

Top 22%
×5story building
+79ft-138ft

Overall

5783

Males

5284

M45-49

5284

10K→15K

6.2 - 9.3 mi

Top 19%
×3story building
+67ft-78ft

Overall

5004

Males

4644

M45-49

4644

15K→20K

9.3 - 12.4 mi

Top 16%
×5story building
+106ft-86ft

Overall

4294

Males

4011

M45-49

4011

20K→Half

12.4 - 13.1 mi

Top 18%
×2story building
+19ft-37ft

Overall

4664

Males

4326

M45-49

4326

Half→25K

13.1 - 15.5 mi

Top 16%
×4story building
+66ft-88ft

Overall

4177

Males

3908

M45-49

3908

25K→30K

15.5 - 18.6 mi

Top 15%
×9story building
+181ft-148ft

Overall

3938

Males

3681

M45-49

3681

30K→20M

18.6 - 20.0 mi

Top 13%
×5story building
+64ft-50ft

Overall

3587

Males

3346

M45-49

3346

20M→21M

20.0 - 21.0 mi

Top 8%
×8story building
+106ft-24ft

Overall

2235

Males

2113

M45-49

2113

21M→35K

21.0 - 21.8 mi

Top 13%
×7story building
+17ft-86ft

Overall

3457

Males

3209

M45-49

3209

35K→23M

21.8 - 23.0 mi

Top 8%
×5story building
+23ft-63ft

Overall

2223

Males

2096

M45-49

2096

23M→24M

23.0 - 24.0 mi

Top 8%
×6story building
+12ft-82ft

Overall

2115

Males

1985

M45-49

1985

24M→40K

24.0 - 24.9 mi

Top 8%
×1story
+6ft-20ft

Overall

2211

Males

2062

M45-49

2062

40K→25.2M

24.9 - 25.2 mi

Top 7%
×1story
+13ft-16ft

Overall

1808

Males

1701

M45-49

1701

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2story building
+22ft-21ft

Overall

2449

Males

2257

M45-49

2257

Passing Analysis

Category:
Athletes Passed
1834
Passed By
939
Net Change
+895
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4474
5K → 10K40667-627#4474#5101
10K → 15K13196+35#5101#5066
15K → 20K21727+190#5066#4876
20K → Half3118+13#4876#4863
Half → 25K18728+159#4863#4704
25K → 30K22949+180#4704#4524
30K → 20M10618+88#4524#4436
20M → 21M2131+212#4436#4224
21M → 35K549+45#4224#4179
35K → 23M1842+182#4179#3997
23M → 24M1465+141#3997#3856
24M → 40K1214+117#3856#3739
40K → 25.2M662+64#3739#3675
25.2M → Finish10913+96#3675#3579
TOTALS1834939+895
📊

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