Boston Marathon logo
BOSTON MARATHON 2023

Brian Mbugua

Bib: 1169•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 8%
Masters (Masters Men)
#0 / 9891
Top 2%
Division (M40-44)
#0 / 2241
Top 6%
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
6:14/mi
19:21
↑ 97↓ 3451.5%
10K· 6.21 mi
6:13/mi
38:41
↑ 79↓ 1380.4%
15K· 9.32 mi
6:15/mi
58:05
↑ 67↓ 78
20K· 12.43 mi
6:16/mi
1:17:32
↑ 106↓ 860.1%
Half· 13.11 mi
6:11/mi
1:21:45
↑ 19↓ 370.5%
25K· 15.53 mi
6:17/mi
1:36:59
↑ 66↓ 880.2%
30K· 18.64 mi
6:30/mi
1:57:10
↑ 181↓ 1480.2%
20M
6:31/mi
2:06:02
↑ 64↓ 500.2%
21M
6:57/mi
2:12:59
↑ 106↓ 241.6%
35K· 21.75 mi
6:12/mi
2:17:37
↑ 17↓ 861.7%
23M
6:28/mi
2:25:43
↑ 23↓ 630.6%
24M
6:14/mi
2:31:57
↓ 821.3%
40K· 24.85 mi
6:26/mi
2:37:27
↓ 200.3%
25.2M
6:58/mi
2:39:51
↑ 13↓ 160.2%
Finish· 26.22 mi
6:22/mi
2:46:20
↑ 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
Time1:21:45
Pace6:14 /mi
2nd Half
Distance13.11 mi
Time1:24:35
Pace6:27 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:5219:216:1419:21
6:14
-
10K
6.21 mi10:39:1238:416:1419:20
6:13
-0:01
15K
9.32 mi10:58:3658:056:1419:24
6:15
+0:02
20K
12.43 mi11:18:031:17:326:1419:27
6:16
+0:01
Half
13.11 mi11:22:161:21:456:144:13
6:11
-0:05
25K
15.53 mi11:37:301:36:596:1515:14
6:17
+0:06
30K
18.64 mi11:57:411:57:106:1720:11
6:30
+0:13
20M
20.00 mi12:06:332:06:026:188:52
6:31
+0:01
21M
21.00 mi12:13:302:12:596:206:57
6:57
+0:26
35K
21.75 mi12:18:082:17:376:204:38
6:12
-0:45
23M
23.00 mi12:26:142:25:436:208:06
6:28
+0:16
24M
24.00 mi12:32:282:31:576:206:14
6:14
-0:14
40K
24.85 mi12:37:582:37:276:205:30
6:26
+0:12
25.2M
25.20 mi12:40:222:39:516:212:24
6:58
+0:32
Finish
26.22 mi12:46:512:46:206:216:29
6:22
-0:36

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

6:11 /mi

Average Pace

6:21 /mi

Slowest Pace

6:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:36:59

94% of race

Time at Steady Pace

9:21

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:21 /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 mi10:19:5219:216:1419:21
6:14
#1196
10K
6.21 mi10:39:1238:416:1419:20
6:13
#1272
15K
9.32 mi10:58:3658:056:1419:24
6:15
#1294
20K
12.43 mi11:18:031:17:326:1419:27
6:16
#1272
Half
13.11 mi11:22:161:21:456:144:13
6:11
#1267
25K
15.53 mi11:37:301:36:596:1515:14
6:17
#1268
30K
18.64 mi11:57:411:57:106:1720:11
6:30
#1287
20M
20.00 mi12:06:332:06:026:188:52
6:31
#1296
21M
21.00 mi12:13:302:12:596:206:57
6:57
#1318
35K
21.75 mi12:18:082:17:376:204:38
6:12
#1303
23M
23.00 mi12:26:142:25:436:208:06
6:28
#1281
24M
24.00 mi12:32:282:31:576:206:14
6:14
#1252
40K
24.85 mi12:37:582:37:276:205:30
6:26
#1243
25.2M
25.20 mi12:40:222:39:516:212:24
6:58
#1239
Finish
26.22 mi12:46:512:46:206:216:29
6:22
#1246
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1196113311331401(Top 5%)1334(Top 9%)1334(Top 60%)
10K6.21 mi3.10 mi1272-761207-741207-741434(Top 5%)1368(Top 9%)1368(Top 61%)
15K9.32 mi3.11 mi1294-221231-241231-241401(Top 5%)1334(Top 9%)1334(Top 60%)
20K12.43 mi3.11 mi1272+221211+201211+201253(Top 5%)1199(Top 8%)1199(Top 54%)
Half13.11 mi0.68 mi1267+51208+31208+31283(Top 5%)1231(Top 8%)1231(Top 55%)
25K15.53 mi2.42 mi1268-11212-41212-41272(Top 5%)1215(Top 8%)1215(Top 54%)
30K18.64 mi3.11 mi1287-191229-171229-171533(Top 6%)1468(Top 10%)1468(Top 66%)
20M20.00 mi1.36 mi1296-91238-91238-91513(Top 6%)1441(Top 9%)1441(Top 64%)
21M21.00 mi1.00 mi1318-221258-201258-201913(Top 7%)1813(Top 12%)1813(Top 81%)
35K21.75 mi0.75 mi1303+151244+141244+141218(Top 5%)1161(Top 8%)1161(Top 52%)
23M23.00 mi1.25 mi1281+221223+211223+211318(Top 5%)1249(Top 8%)1249(Top 56%)
24M24.00 mi1.00 mi1252+291195+281195+281121(Top 4%)1062(Top 7%)1062(Top 47%)
40K24.85 mi0.85 mi1243+91186+91186+91308(Top 5%)1235(Top 8%)1235(Top 55%)
25.2M25.20 mi0.35 mi1239+41182+41182+41592(Top 6%)1498(Top 10%)1498(Top 67%)
Finish26.22 mi1.02 mi1246-71188-61188-61851(Top 7%)1729(Top 11%)1729(Top 77%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 5%
×21story building
+97ft-345ft

Overall

1401

Males

1334

M40-44

1334

5K→10K

3.1 - 6.2 mi

Top 5%
×5story building
+79ft-138ft

Overall

1434

Males

1368

M40-44

1368

10K→15K

6.2 - 9.3 mi

Top 5%
×3story building
+67ft-78ft

Overall

1401

Males

1334

M40-44

1334

15K→20K

9.3 - 12.4 mi

Top 5%
×5story building
+106ft-86ft

Overall

1253

Males

1199

M40-44

1199

20K→Half

12.4 - 13.1 mi

Top 5%
×2story building
+19ft-37ft

Overall

1283

Males

1231

M40-44

1231

Half→25K

13.1 - 15.5 mi

Top 5%
×4story building
+66ft-88ft

Overall

1272

Males

1215

M40-44

1215

25K→30K

15.5 - 18.6 mi

Top 6%
×9story building
+181ft-148ft

Overall

1533

Males

1468

M40-44

1468

30K→20M

18.6 - 20.0 mi

Top 6%
×5story building
+64ft-50ft

Overall

1513

Males

1441

M40-44

1441

20M→21M

20.0 - 21.0 mi

Top 7%
×8story building
+106ft-24ft

Overall

1913

Males

1813

M40-44

1813

21M→35K

21.0 - 21.8 mi

Top 5%
×7story building
+17ft-86ft

Overall

1218

Males

1161

M40-44

1161

35K→23M

21.8 - 23.0 mi

Top 5%
×5story building
+23ft-63ft

Overall

1318

Males

1249

M40-44

1249

23M→24M

23.0 - 24.0 mi

Top 4%
×6story building
+12ft-82ft

Overall

1121

Males

1062

M40-44

1062

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1308

Males

1235

M40-44

1235

40K→25.2M

24.9 - 25.2 mi

Top 6%
×1story
+13ft-16ft

Overall

1592

Males

1498

M40-44

1498

25.2M→Finish

25.2 - 26.2 mi

Top 7%
×2story building
+22ft-21ft

Overall

1851

Males

1729

M40-44

1729

Passing Analysis

Category:
Athletes Passed
367
Passed By
417
Net Change
-50
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1196
5K → 10K37113-76#1196#1272
10K → 15K3658-22#1272#1294
15K → 20K5230+22#1294#1272
20K → Half83+5#1272#1267
Half → 25K2324-1#1267#1268
25K → 30K3857-19#1268#1287
30K → 20M1827-9#1287#1296
20M → 21M1840-22#1296#1318
21M → 35K216+15#1318#1303
35K → 23M3715+22#1303#1281
23M → 24M356+29#1281#1252
24M → 40K2314+9#1252#1243
40K → 25.2M95+4#1243#1239
25.2M → Finish1219-7#1239#1246
TOTALS367417-50
📊

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