All Results|Race Analytics|Course|Contact
BOSTON MARATHON 2023

Alan Talhelm

Bib: 2005•M

CA

Masters
Boston Marathon logo
0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 5%
Gender (Male)
#0 / 15176
Top 8%
Masters (Masters Men)
#0 / 9891
Top 2%
Age Group (M40-44)
#0 / 2241
Top 6%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
19:51
Rank: #1772
Start → 5K
19:51 | 6:23/mi
10K· 6.21 mi
38:58
Rank: #1456 (+316)
5K → 10K
19:07 | 6:09/mi
15K· 9.32 mi
58:11
Rank: #1338 (+118)
10K → 15K
19:13 | 6:11/mi
20K· 12.43 mi
1:17:38
Rank: #1298 (+40)
15K → 20K
19:27 | 6:16/mi
Half· 13.11 mi
1:21:50
Rank: #1289 (+9)
20K → Half
4:12 | 6:09/mi
25K· 15.53 mi
1:36:54
Rank: #1241 (+48)
Half → 25K
15:04 | 6:13/mi
30K· 18.64 mi
1:56:41
Rank: #1202 (+39)
25K → 30K
19:47 | 6:22/mi
20M
2:05:29
Rank: #1197 (+5)
30K → 20M
8:48 | 6:29/mi
21M
2:12:22
Rank: #1202 (-5)
20M → 21M
6:53 | 6:53/mi
35K· 21.75 mi
2:17:09
Rank: #1210 (-8)
21M → 35K
4:47 | 6:24/mi
23M
2:25:25
Rank: #1223 (-13)
35K → 23M
8:16 | 6:36/mi
24M
2:31:50
Rank: #1229 (-6)
23M → 24M
6:25 | 6:25/mi
40K· 24.85 mi
2:37:38
Rank: #1265 (-36)
24M → 40K
5:48 | 6:47/mi
25.2M
2:40:07
Rank: #1271 (-6)
40K → 25.2M
2:29 | 7:12/mi
Finish· 26.22 mi
2:46:43
Rank: #1283 (-12)
25.2M → Finish
6:36 | 6:29/mi
Is this your race?

Claim it — get your free Race Performance Report

An AI deep-dive into your pacing, rankings, and passing — built from your real splits and emailed to you, free.

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:21:50
Pace6:15 /mi
2nd Half
Distance13.11 mi
Time1:24:53
Pace6:29 /mi
📊Positive Split: 3.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:20:5219:516:2319:51
6:23
-
10K
6.21 mi10:39:5938:586:1619:07
6:09
-0:14
15K
9.32 mi10:59:1258:116:1519:13
6:11
+0:02
20K
12.43 mi11:18:391:17:386:1519:27
6:16
+0:05
Half
13.11 mi11:22:511:21:506:154:12
6:09
-0:07
25K
15.53 mi11:37:551:36:546:1415:04
6:13
+0:04
30K
18.64 mi11:57:421:56:416:1619:47
6:22
+0:09
20M
20.00 mi12:06:302:05:296:168:48
6:29
+0:07
21M
21.00 mi12:13:232:12:226:186:53
6:53
+0:24
35K
21.75 mi12:18:102:17:096:184:47
6:24
-0:29
23M
23.00 mi12:26:262:25:256:198:16
6:36
+0:12
24M
24.00 mi12:32:512:31:506:206:25
6:25
-0:11
40K
24.85 mi12:38:392:37:386:215:48
6:47
+0:22
25.2M
25.20 mi12:41:082:40:076:212:29
7:12
+0:25
Finish
26.22 mi12:47:442:46:436:226:36
6:29
-0:43

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

6:09 /mi

Average Pace

6:22 /mi

Slowest Pace

7:12 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:31:33

91% of race

Time at Steady Pace

15:10

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:22 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:20:5219:516:2319:51
6:23
#1772
10K
6.21 mi10:39:5938:586:1619:07
6:09
#1456
15K
9.32 mi10:59:1258:116:1519:13
6:11
#1338
20K
12.43 mi11:18:391:17:386:1519:27
6:16
#1298
Half
13.11 mi11:22:511:21:506:154:12
6:09
#1289
25K
15.53 mi11:37:551:36:546:1415:04
6:13
#1241
30K
18.64 mi11:57:421:56:416:1619:47
6:22
#1202
20M
20.00 mi12:06:302:05:296:168:48
6:29
#1197
21M
21.00 mi12:13:232:12:226:186:53
6:53
#1202
35K
21.75 mi12:18:102:17:096:184:47
6:24
#1210
23M
23.00 mi12:26:262:25:256:198:16
6:36
#1223
24M
24.00 mi12:32:512:31:506:206:25
6:25
#1229
40K
24.85 mi12:38:392:37:386:215:48
6:47
#1265
25.2M
25.20 mi12:41:082:40:076:212:29
7:12
#1271
Finish
26.22 mi12:47:442:46:436:226:36
6:29
#1283
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi1772168916891195(Top 4%)1139(Top 8%)1139(Top 51%)
10K6.21 mi3.10 mi1456+3161388+3011388+3011187(Top 4%)1126(Top 7%)1126(Top 50%)
15K9.32 mi3.11 mi1338+1181274+1141274+1141195(Top 4%)1139(Top 8%)1139(Top 51%)
20K12.43 mi3.11 mi1298+401237+371237+371255(Top 5%)1201(Top 8%)1201(Top 54%)
Half13.11 mi0.68 mi1289+91227+101227+101199(Top 5%)1148(Top 8%)1148(Top 51%)
25K15.53 mi2.42 mi1241+481186+411186+411038(Top 4%)989(Top 7%)989(Top 44%)
30K18.64 mi3.11 mi1202+391147+391147+391124(Top 4%)1071(Top 7%)1071(Top 48%)
20M20.00 mi1.36 mi1197+51143+41143+41353(Top 5%)1290(Top 9%)1290(Top 58%)
21M21.00 mi1.00 mi1202-51148-51148-51683(Top 6%)1599(Top 11%)1599(Top 71%)
35K21.75 mi0.75 mi1210-81156-81156-81915(Top 7%)1819(Top 12%)1819(Top 81%)
23M23.00 mi1.25 mi1223-131167-111167-111761(Top 7%)1670(Top 11%)1670(Top 75%)
24M24.00 mi1.00 mi1229-61173-61173-61722(Top 6%)1623(Top 11%)1623(Top 72%)
40K24.85 mi0.85 mi1265-361207-341207-342711(Top 10%)2497(Top 16%)2497(Top 111%)
25.2M25.20 mi0.35 mi1271-61211-41211-42451(Top 9%)2264(Top 15%)2264(Top 101%)
Finish26.22 mi1.02 mi1283-121222-111222-112347(Top 9%)2165(Top 14%)2165(Top 97%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1195

Males

1139

M40-44

1139

5K→10K

3.1 - 6.2 mi

Top 4%
×5stories
+79ft-138ft

Overall

1187

Males

1126

M40-44

1126

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1195

Males

1139

M40-44

1139

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1255

Males

1201

M40-44

1201

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1199

Males

1148

M40-44

1148

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1038

Males

989

M40-44

989

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1124

Males

1071

M40-44

1071

30K→20M

18.6 - 20.0 mi

Top 5%
×5stories
+64ft-50ft

Overall

1353

Males

1290

M40-44

1290

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1683

Males

1599

M40-44

1599

21M→35K

21.0 - 21.8 mi

Top 7%
×7stories
+17ft-86ft

Overall

1915

Males

1819

M40-44

1819

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1761

Males

1670

M40-44

1670

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1722

Males

1623

M40-44

1623

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2711

Males

2497

M40-44

2497

40K→25.2M

24.9 - 25.2 mi

Top 9%
×1story
+13ft-16ft

Overall

2451

Males

2264

M40-44

2264

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2347

Males

2165

M40-44

2165

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
759
Passed By
270
Net Change
+489
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1772
5K → 10K32711+316#1772#1456
10K → 15K1246+118#1456#1338
15K → 20K6424+40#1338#1298
20K → Half123+9#1298#1289
Half → 25K535+48#1289#1241
25K → 30K5819+39#1241#1202
30K → 20M2015+5#1202#1197
20M → 21M2227-5#1197#1202
21M → 35K1119-8#1202#1210
35K → 23M2235-13#1210#1223
23M → 24M1723-6#1223#1229
24M → 40K844-36#1229#1265
40K → 25.2M511-6#1265#1271
25.2M → Finish1628-12#1271#1283
TOTALS759270+489
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

Loading...

🎨Heatmap Timeline

Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Activity Data

Upload your GPX file to see detailed activity metrics

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export & Support

Download your data, get help, and share your feedback

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