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BOSTON MARATHON 2023

Tessa Mah

Bib: 15440•F

CT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 33%
Gender (Female)
#0 / 11423
Top 13%
Masters (Masters Women)
#0 / 6539
Top 5%
Division (F40-44)
#0 / 1878
Top 11%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:52
Rank: #11293
Start → 5K
23:52 | 7:41/mi
10K· 6.21 mi
47:14
Rank: #10934 (+359)
5K → 10K
23:22 | 7:31/mi
15K· 9.32 mi
1:10:21
Rank: #10485 (+449)
10K → 15K
23:07 | 7:26/mi
20K· 12.43 mi
1:33:39
Rank: #10152 (+333)
15K → 20K
23:18 | 7:30/mi
Half· 13.11 mi
1:38:41
Rank: #10076 (+76)
20K → Half
5:02 | 7:23/mi
25K· 15.53 mi
1:57:01
Rank: #9916 (+160)
Half → 25K
18:20 | 7:34/mi
30K· 18.64 mi
2:20:46
Rank: #9599 (+317)
25K → 30K
23:45 | 7:39/mi
20M
2:31:19
Rank: #9497 (+102)
30K → 20M
10:33 | 7:46/mi
21M
2:39:28
Rank: #9372 (+125)
20M → 21M
8:09 | 8:09/mi
35K· 21.75 mi
2:44:53
Rank: #9256 (+116)
21M → 35K
5:25 | 7:14/mi
23M
2:54:27
Rank: #9115 (+141)
35K → 23M
9:34 | 7:38/mi
24M
3:01:52
Rank: #9005 (+110)
23M → 24M
7:25 | 7:25/mi
40K· 24.85 mi
3:08:14
Rank: #8882 (+123)
24M → 40K
6:22 | 7:27/mi
25.2M
3:11:00
Rank: #8822 (+60)
40K → 25.2M
2:46 | 8:01/mi
Finish· 26.22 mi
3:18:19
Rank: #8694 (+128)
25.2M → Finish
7:19 | 7:11/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:38:41
Pace7:32 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:39:38
Pace7:36 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:2323:527:4123:52
7:41
-
10K
6.21 mi11:16:4547:147:3623:22
7:31
-0:10
15K
9.32 mi11:39:521:10:217:3323:07
7:26
-0:05
20K
12.43 mi12:03:101:33:397:3223:18
7:30
+0:04
Half
13.11 mi12:08:121:38:417:325:02
7:23
-0:07
25K
15.53 mi12:26:321:57:017:3218:20
7:34
+0:11
30K
18.64 mi12:50:172:20:467:3323:45
7:39
+0:05
20M
20.00 mi13:00:502:31:197:3410:33
7:46
+0:07
21M
21.00 mi13:08:592:39:287:368:09
8:09
+0:23
35K
21.75 mi13:14:242:44:537:355:25
7:14
-0:55
23M
23.00 mi13:23:582:54:277:359:34
7:38
+0:24
24M
24.00 mi13:31:233:01:527:357:25
7:25
-0:13
40K
24.85 mi13:37:453:08:147:346:22
7:27
+0:02
25.2M
25.20 mi13:40:313:11:007:352:46
8:01
+0:34
Finish
26.22 mi13:47:503:18:197:347:19
7:11
-0:50

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

7:11 /mi

Average Pace

7:34 /mi

Slowest Pace

8:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:07:24

94% of race

Time at Steady Pace

10:55

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:34 /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 mi10:53:2323:527:4123:52
7:41
#11293
10K
6.21 mi11:16:4547:147:3623:22
7:31
#10934
15K
9.32 mi11:39:521:10:217:3323:07
7:26
#10485
20K
12.43 mi12:03:101:33:397:3223:18
7:30
#10152
Half
13.11 mi12:08:121:38:417:325:02
7:23
#10076
25K
15.53 mi12:26:321:57:017:3218:20
7:34
#9916
30K
18.64 mi12:50:172:20:467:3323:45
7:39
#9599
20M
20.00 mi13:00:502:31:197:3410:33
7:46
#9497
21M
21.00 mi13:08:592:39:287:368:09
8:09
#9372
35K
21.75 mi13:14:242:44:537:355:25
7:14
#9256
23M
23.00 mi13:23:582:54:277:359:34
7:38
#9115
24M
24.00 mi13:31:233:01:527:357:25
7:25
#9005
40K
24.85 mi13:37:453:08:147:346:22
7:27
#8882
25.2M
25.20 mi13:40:313:11:007:352:46
8:01
#8822
Finish
26.22 mi13:47:503:18:197:347:19
7:11
#8694
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi11293248224829703(Top 36%)1709(Top 15%)1709(Top 91%)
10K6.21 mi3.10 mi10934+3592291+1912291+19110630(Top 40%)2115(Top 19%)2115(Top 113%)
15K9.32 mi3.11 mi10485+4492055+2362055+2369703(Top 36%)1709(Top 15%)1709(Top 91%)
20K12.43 mi3.11 mi10152+3331900+1551900+1559313(Top 35%)1605(Top 14%)1605(Top 85%)
Half13.11 mi0.68 mi10076+761869+311869+319297(Top 35%)1589(Top 14%)1589(Top 85%)
25K15.53 mi2.42 mi9916+1601816+531816+539257(Top 35%)1657(Top 15%)1657(Top 88%)
30K18.64 mi3.11 mi9599+3171715+1011715+1018272(Top 31%)1415(Top 12%)1415(Top 75%)
20M20.00 mi1.36 mi9497+1021704+111704+118602(Top 32%)1635(Top 14%)1635(Top 87%)
21M21.00 mi1.00 mi9372+1251680+241680+248325(Top 31%)1651(Top 14%)1651(Top 88%)
35K21.75 mi0.75 mi9256+1161653+271653+276830(Top 26%)1048(Top 9%)1048(Top 56%)
23M23.00 mi1.25 mi9115+1411622+311622+317393(Top 28%)1335(Top 12%)1335(Top 71%)
24M24.00 mi1.00 mi9005+1101599+231599+237196(Top 27%)1366(Top 12%)1366(Top 73%)
40K24.85 mi0.85 mi8882+1231573+261573+266408(Top 24%)1126(Top 10%)1126(Top 60%)
25.2M25.20 mi0.35 mi8822+601556+171556+176735(Top 25%)1321(Top 12%)1321(Top 70%)
Finish26.22 mi1.02 mi8694+1281523+331523+336314(Top 24%)1171(Top 10%)1171(Top 62%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21stories
+97ft-345ft

Overall

9703

Females

1709

F40-44

1709

5K→10K

3.1 - 6.2 mi

Top 40%
×5stories
+79ft-138ft

Overall

10630

Females

2115

F40-44

2115

10K→15K

6.2 - 9.3 mi

Top 36%
×3stories
+67ft-78ft

Overall

9703

Females

1709

F40-44

1709

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9313

Females

1605

F40-44

1605

20K→Half

12.4 - 13.1 mi

Top 35%
×2stories
+19ft-37ft

Overall

9297

Females

1589

F40-44

1589

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9257

Females

1657

F40-44

1657

25K→30K

15.5 - 18.6 mi

Top 31%
×9stories
+181ft-148ft

Overall

8272

Females

1415

F40-44

1415

30K→20M

18.6 - 20.0 mi

Top 32%
×5stories
+64ft-50ft

Overall

8602

Females

1635

F40-44

1635

20M→21M

20.0 - 21.0 mi

Top 31%
×8stories
+106ft-24ft

Overall

8325

Females

1651

F40-44

1651

21M→35K

21.0 - 21.8 mi

Top 26%
×7stories
+17ft-86ft

Overall

6830

Females

1048

F40-44

1048

35K→23M

21.8 - 23.0 mi

Top 28%
×5stories
+23ft-63ft

Overall

7393

Females

1335

F40-44

1335

23M→24M

23.0 - 24.0 mi

Top 27%
×6stories
+12ft-82ft

Overall

7196

Females

1366

F40-44

1366

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6408

Females

1126

F40-44

1126

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

6735

Females

1321

F40-44

1321

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6314

Females

1171

F40-44

1171

Passing Analysis

Category:
Athletes Passed
3020*
Passed By
421
Net Change
+2599
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11293
5K → 10K521162+359#11293#10934
10K → 15K49344+449#10934#10485
15K → 20K357*24+333#10485#10152
20K → Half86*10+76#10152#10076
Half → 25K199*39+160#10076#9916
25K → 30K346*29+317#9916#9599
30K → 20M13735+102#9599#9497
20M → 21M14823+125#9497#9372
21M → 35K1226+116#9372#9256
35K → 23M16423+141#9256#9115
23M → 24M1199+110#9115#9005
24M → 40K1318+123#9005#8882
40K → 25.2M622+60#8882#8822
25.2M → Finish1357+128#8822#8694
TOTALS3020*421+2599

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔥Passing Intensity

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing