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BOSTON MARATHON 2023

Tiffany Simms

Bib: 14168•F

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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 16%
Division (F18-39)
#0 / 4884
Top 29%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:27
Rank: #10071
Start → 5K
7:33/mi
23:27 split
10K· 6.21 mi
46:31
Rank: #9900 (+171)
5K → 10K
7:25/mi
23:04 split
15K· 9.32 mi
1:09:48
Rank: #9938 (-38)
10K → 15K
7:30/mi
23:17 split
20K· 12.43 mi
1:33:51
Rank: #10291 (-353)
15K → 20K
7:44/mi
24:03 split
Half· 13.11 mi
1:38:48
Rank: #10168 (+123)
20K → Half
7:15/mi
4:57 split
25K· 15.53 mi
1:58:21
Rank: #10644 (-476)
Half → 25K
8:04/mi
19:33 split
30K· 18.64 mi
2:22:00
Rank: #10113 (+531)
25K → 30K
7:37/mi
23:39 split
20M
2:32:25
Rank: #9909 (+204)
30K → 20M
7:40/mi
10:25 split
21M
2:40:44
Rank: #9845 (+64)
20M → 21M
8:19/mi
8:19 split
35K· 21.75 mi
2:46:20
Rank: #9785 (+60)
21M → 35K
7:29/mi
5:36 split
23M
2:56:06
Rank: #9661 (+124)
35K → 23M
7:48/mi
9:46 split
24M
3:03:35
Rank: #9551 (+110)
23M → 24M
7:29/mi
7:29 split
40K· 24.85 mi
3:10:18
Rank: #9495 (+56)
24M → 40K
7:51/mi
6:43 split
25.2M
3:13:11
Rank: #9454 (+41)
40K → 25.2M
8:22/mi
2:53 split
Finish· 26.22 mi
3:21:03
Rank: #9468 (-14)
25.2M → Finish
7:43/mi
7:52 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:38:48
Pace7:32 /mi
2nd Half
Distance13.11 mi
Time1:42:15
Pace7:48 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:2123:277:3323:27
7:33
-
10K
6.21 mi11:15:2546:317:2923:04
7:25
-0:08
15K
9.32 mi11:38:421:09:487:2923:17
7:30
+0:05
20K
12.43 mi12:02:451:33:517:3324:03
7:44
+0:14
Half
13.11 mi12:07:421:38:487:324:57
7:15
-0:29
25K
15.53 mi12:27:151:58:217:3719:33
8:04
+0:49
30K
18.64 mi12:50:542:22:007:3723:39
7:37
-0:27
20M
20.00 mi13:01:192:32:257:3710:25
7:40
+0:03
21M
21.00 mi13:09:382:40:447:398:19
8:19
+0:39
35K
21.75 mi13:15:142:46:207:395:36
7:29
-0:50
23M
23.00 mi13:25:002:56:067:399:46
7:48
+0:19
24M
24.00 mi13:32:293:03:357:397:29
7:29
-0:19
40K
24.85 mi13:39:123:10:187:396:43
7:51
+0:22
25.2M
25.20 mi13:42:053:13:117:402:53
8:22
+0:31
Finish
26.22 mi13:49:573:21:037:407:52
7:43
-0:39

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

7:15 /mi

Average Pace

7:40 /mi

Slowest Pace

8:22 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:18

85% of race

Time at Steady Pace

30:45

15% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:40 /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 mi10:52:2123:277:3323:27
7:33
#10071
10K
6.21 mi11:15:2546:317:2923:04
7:25
#9900
15K
9.32 mi11:38:421:09:487:2923:17
7:30
#9938
20K
12.43 mi12:02:451:33:517:3324:03
7:44
#10291
Half
13.11 mi12:07:421:38:487:324:57
7:15
#10168
25K
15.53 mi12:27:151:58:217:3719:33
8:04
#10644
30K
18.64 mi12:50:542:22:007:3723:39
7:37
#10113
20M
20.00 mi13:01:192:32:257:3710:25
7:40
#9909
21M
21.00 mi13:09:382:40:447:398:19
8:19
#9845
35K
21.75 mi13:15:142:46:207:395:36
7:29
#9785
23M
23.00 mi13:25:002:56:067:399:46
7:48
#9661
24M
24.00 mi13:32:293:03:357:397:29
7:29
#9551
40K
24.85 mi13:39:123:10:187:396:43
7:51
#9495
25.2M
25.20 mi13:42:053:13:117:402:53
8:22
#9454
Finish
26.22 mi13:49:573:21:037:407:52
7:43
#9468
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi100711896189610141(Top 38%)1907(Top 17%)1907(Top 39%)
10K6.21 mi3.10 mi9900+1711797+991797+999860(Top 37%)1752(Top 15%)1752(Top 36%)
15K9.32 mi3.11 mi9938-381799-21799-210141(Top 38%)1907(Top 17%)1907(Top 39%)
20K12.43 mi3.11 mi10291-3531971-1721971-17211236(Top 42%)2528(Top 22%)2528(Top 52%)
Half13.11 mi0.68 mi10168+1231919+521919+528336(Top 31%)1241(Top 11%)1241(Top 25%)
25K15.53 mi2.42 mi10644-4762170-2512170-25113246(Top 50%)3767(Top 33%)3767(Top 77%)
30K18.64 mi3.11 mi10113+5311945+2251945+2258036(Top 30%)1330(Top 12%)1330(Top 27%)
20M20.00 mi1.36 mi9909+2041878+671878+677971(Top 30%)1394(Top 12%)1394(Top 29%)
21M21.00 mi1.00 mi9845+641877+11877+19345(Top 35%)2070(Top 18%)2070(Top 42%)
35K21.75 mi0.75 mi9785+601863+141863+148499(Top 32%)1698(Top 15%)1698(Top 35%)
23M23.00 mi1.25 mi9661+1241845+181845+188446(Top 32%)1773(Top 16%)1773(Top 36%)
24M24.00 mi1.00 mi9551+1101819+261819+267627(Top 29%)1532(Top 13%)1532(Top 31%)
40K24.85 mi0.85 mi9495+561825-61825-69064(Top 34%)2196(Top 19%)2196(Top 45%)
25.2M25.20 mi0.35 mi9454+411821+41821+48718(Top 33%)2121(Top 19%)2121(Top 43%)
Finish26.22 mi1.02 mi9468-141852-311852-3110112(Top 38%)2743(Top 24%)2743(Top 56%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10141

Females

1907

F18-39

1907

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

9860

Females

1752

F18-39

1752

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10141

Females

1907

F18-39

1907

15K→20K

9.3 - 12.4 mi

Top 42%
×5story building
+106ft-86ft

Overall

11236

Females

2528

F18-39

2528

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8336

Females

1241

F18-39

1241

Half→25K

13.1 - 15.5 mi

Top 50%
×4story building
+66ft-88ft

Overall

13246

Females

3767

F18-39

3767

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

8036

Females

1330

F18-39

1330

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

7971

Females

1394

F18-39

1394

20M→21M

20.0 - 21.0 mi

Top 35%
×8story building
+106ft-24ft

Overall

9345

Females

2070

F18-39

2070

21M→35K

21.0 - 21.8 mi

Top 32%
×7story building
+17ft-86ft

Overall

8499

Females

1698

F18-39

1698

35K→23M

21.8 - 23.0 mi

Top 32%
×5story building
+23ft-63ft

Overall

8446

Females

1773

F18-39

1773

23M→24M

23.0 - 24.0 mi

Top 29%
×6story building
+12ft-82ft

Overall

7627

Females

1532

F18-39

1532

24M→40K

24.0 - 24.9 mi

Top 34%
×1story
+6ft-20ft

Overall

9064

Females

2196

F18-39

2196

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

8718

Females

2121

F18-39

2121

25.2M→Finish

25.2 - 26.2 mi

Top 38%
×2story building
+22ft-21ft

Overall

10112

Females

2743

F18-39

2743

Passing Analysis

Category:
Athletes Passed
2205*
Passed By
1601
Net Change
+603
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10071
5K → 10K400*229+171#10071#9900
10K → 15K165202-38#9900#9938
15K → 20K67420-353#9938#10291
20K → Half1252+123#10291#10168
Half → 25K34510-476#10168#10644
25K → 30K540*9+531#10644#10113
30K → 20M215*11+204#10113#9909
20M → 21M11753+64#9909#9845
21M → 35K7313+60#9845#9785
35K → 23M15531+124#9785#9661
23M → 24M12313+110#9661#9551
24M → 40K83*27+56#9551#9495
40K → 25.2M5211+41#9495#9454
25.2M → Finish5670-14#9454#9468
TOTALS2205*1601+603

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

📊

Passing Visuals

Category:
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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