Boston Marathon logo
BOSTON MARATHON 2023

Mike Bronson

Bib: 11886•M

IA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
7:40/mi
23:50
↑ 97↓ 3451.5%
10K· 6.21 mi
7:32/mi
47:15
↑ 79↓ 1380.4%
15K· 9.32 mi
7:34/mi
1:10:46
↑ 67↓ 78
20K· 12.43 mi
7:48/mi
1:34:59
↑ 106↓ 860.1%
Half· 13.11 mi
7:42/mi
1:40:14
↑ 19↓ 370.5%
25K· 15.53 mi
7:55/mi
1:59:26
↑ 66↓ 880.2%
30K· 18.64 mi
8:24/mi
2:25:31
↑ 181↓ 1480.2%
20M
8:38/mi
2:37:15
↑ 64↓ 500.2%
21M
9:26/mi
2:46:41
↑ 106↓ 241.6%
35K· 21.75 mi
8:43/mi
2:53:12
↑ 17↓ 861.7%
23M
9:22/mi
3:04:56
↑ 23↓ 630.6%
24M
9:44/mi
3:14:40
↓ 821.3%
40K· 24.85 mi
9:44/mi
3:22:59
↓ 200.3%
25.2M
10:26/mi
3:26:35
↑ 13↓ 160.2%
Finish· 26.22 mi
9:27/mi
3:36:13
↑ 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 HalfFaster
Distance13.11 mi
Time1:40:14
Pace7:39 /mi
2nd Half
Distance13.11 mi
Time1:55:59
Pace8:51 /mi
📊Positive Split: 15.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2323:507:4023:50
7:40
-
10K
6.21 mi11:14:4847:157:3623:25
7:32
-0:08
15K
9.32 mi11:38:191:10:467:3623:31
7:34
+0:02
20K
12.43 mi12:02:321:34:597:3924:13
7:48
+0:14
Half
13.11 mi12:07:471:40:147:395:15
7:42
-0:06
25K
15.53 mi12:26:591:59:267:4119:12
7:55
+0:13
30K
18.64 mi12:53:042:25:317:4826:05
8:24
+0:29
20M
20.00 mi13:04:482:37:157:5211:44
8:38
+0:14
21M
21.00 mi13:14:142:46:417:569:26
9:26
+0:48
35K
21.75 mi13:20:452:53:127:586:31
8:43
-0:43
23M
23.00 mi13:32:293:04:568:0211:44
9:22
+0:39
24M
24.00 mi13:42:133:14:408:079:44
9:44
+0:22
40K
24.85 mi13:50:323:22:598:108:19
9:44
0:00
25.2M
25.20 mi13:54:083:26:358:123:36
10:26
+0:42
Finish
26.22 mi14:03:463:36:138:159:38
9:27
-0:59

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

7:32 /mi

Average Pace

8:15 /mi

Slowest Pace

10:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:59:26

55% of race

Time at Steady Pace

44:20

21% of race

Time at Slower Pace

52:27

24% of race

Average Pace: 8:15 /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 mi10:51:2323:507:4023:50
7:40
#11197
10K
6.21 mi11:14:4847:157:3623:25
7:32
#10953
15K
9.32 mi11:38:191:10:467:3623:31
7:34
#10869
20K
12.43 mi12:02:321:34:597:3924:13
7:48
#11055
Half
13.11 mi12:07:471:40:147:395:15
7:42
#11086
25K
15.53 mi12:26:591:59:267:4119:12
7:55
#11197
30K
18.64 mi12:53:042:25:317:4826:05
8:24
#11658
20M
20.00 mi13:04:482:37:157:5211:44
8:38
#11886
21M
21.00 mi13:14:142:46:417:569:26
9:26
#12154
35K
21.75 mi13:20:452:53:127:586:31
8:43
#12338
23M
23.00 mi13:32:293:04:568:0211:44
9:22
#12760
24M
24.00 mi13:42:133:14:408:079:44
9:44
#13206
40K
24.85 mi13:50:323:22:598:108:19
9:44
#13509
25.2M
25.20 mi13:54:083:26:358:123:36
10:26
#13630
Finish
26.22 mi14:03:463:36:138:159:38
9:27
#13975
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi111978752875210754(Top 40%)8536(Top 56%)8536(Top 416%)
10K6.21 mi3.10 mi10953+2448640+1128640+11210773(Top 40%)8574(Top 56%)8574(Top 418%)
15K9.32 mi3.11 mi10869+848592+488592+4810754(Top 40%)8536(Top 56%)8536(Top 416%)
20K12.43 mi3.11 mi11055-1868683-918683-9111688(Top 44%)8890(Top 59%)8890(Top 433%)
Half13.11 mi0.68 mi11086-318694-118694-1111829(Top 44%)9014(Top 59%)9014(Top 439%)
25K15.53 mi2.42 mi11197-1118713-198713-1912048(Top 45%)8933(Top 59%)8933(Top 435%)
30K18.64 mi3.11 mi11658-4618862-1498862-14913667(Top 51%)9519(Top 63%)9519(Top 464%)
20M20.00 mi1.36 mi11886-2288939-778939-7714461(Top 54%)9756(Top 64%)9756(Top 475%)
21M21.00 mi1.00 mi12154-2689039-1009039-10015616(Top 59%)10177(Top 67%)10177(Top 496%)
35K21.75 mi0.75 mi12338-1849105-669105-6616421(Top 62%)10438(Top 69%)10438(Top 509%)
23M23.00 mi1.25 mi12760-4229258-1539258-15317795(Top 67%)11023(Top 73%)11023(Top 537%)
24M24.00 mi1.00 mi13206-4469419-1619419-16119986(Top 75%)11991(Top 79%)11991(Top 584%)
40K24.85 mi0.85 mi13509-3039529-1109529-11019081(Top 72%)11517(Top 76%)11517(Top 561%)
25.2M25.20 mi0.35 mi13630-1219569-409569-4018851(Top 71%)11386(Top 75%)11386(Top 555%)
Finish26.22 mi1.02 mi13975-3459678-1099678-10919941(Top 75%)11952(Top 79%)11952(Top 582%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 40%
×21story building
+97ft-345ft

Overall

10754

Males

8536

M50-54

8536

5K→10K

3.1 - 6.2 mi

Top 40%
×5story building
+79ft-138ft

Overall

10773

Males

8574

M50-54

8574

10K→15K

6.2 - 9.3 mi

Top 40%
×3story building
+67ft-78ft

Overall

10754

Males

8536

M50-54

8536

15K→20K

9.3 - 12.4 mi

Top 44%
×5story building
+106ft-86ft

Overall

11688

Males

8890

M50-54

8890

20K→Half

12.4 - 13.1 mi

Top 44%
×2story building
+19ft-37ft

Overall

11829

Males

9014

M50-54

9014

Half→25K

13.1 - 15.5 mi

Top 45%
×4story building
+66ft-88ft

Overall

12048

Males

8933

M50-54

8933

25K→30K

15.5 - 18.6 mi

Top 51%
×9story building
+181ft-148ft

Overall

13667

Males

9519

M50-54

9519

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

14461

Males

9756

M50-54

9756

20M→21M

20.0 - 21.0 mi

Top 59%
×8story building
+106ft-24ft

Overall

15616

Males

10177

M50-54

10177

21M→35K

21.0 - 21.8 mi

Top 62%
×7story building
+17ft-86ft

Overall

16421

Males

10438

M50-54

10438

35K→23M

21.8 - 23.0 mi

Top 67%
×5story building
+23ft-63ft

Overall

17795

Males

11023

M50-54

11023

23M→24M

23.0 - 24.0 mi

Top 75%
×6story building
+12ft-82ft

Overall

19986

Males

11991

M50-54

11991

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

19081

Males

11517

M50-54

11517

40K→25.2M

24.9 - 25.2 mi

Top 71%
×1story
+13ft-16ft

Overall

18851

Males

11386

M50-54

11386

25.2M→Finish

25.2 - 26.2 mi

Top 75%
×2story building
+22ft-21ft

Overall

19941

Males

11952

M50-54

11952

Passing Analysis

Category:
Athletes Passed
1098
Passed By
3876
Net Change
-2778
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11197
5K → 10K445201+244#11197#10953
10K → 15K230146+84#10953#10869
15K → 20K100286-186#10869#11055
20K → Half1849-31#11055#11086
Half → 25K88199-111#11086#11197
25K → 30K67528-461#11197#11658
30K → 20M46274-228#11658#11886
20M → 21M31299-268#11886#12154
21M → 35K13197-184#12154#12338
35K → 23M20442-422#12338#12760
23M → 24M11457-446#12760#13206
24M → 40K12315-303#13206#13509
40K → 25.2M9130-121#13509#13630
25.2M → Finish8353-345#13630#13975
TOTALS10983876-2778
📊

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