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BOSTON MARATHON 2025

Jojo Emerson

Bib: 31356•F

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Female)
#0 / 12228
Division (F18-39)
#0 / 5469
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
27:53
Rank: #22318
Start → 5K
27:53 | 8:58/mi
10K· 6.21 mi
55:33
Rank: #22159 (+159)
5K → 10K
27:40 | 8:54/mi
15K· 9.32 mi
1:23:30
Rank: #22115 (+44)
10K → 15K
27:57 | 9:00/mi
20K· 12.43 mi
1:51:31
Rank: #21815 (+300)
15K → 20K
28:01 | 9:01/mi
Half· 13.11 mi
1:57:37
Rank: #21792 (+23)
20K → Half
6:06 | 8:56/mi
25K· 15.53 mi
2:19:43
Rank: #21524 (+268)
Half → 25K
22:06 | 9:07/mi
30K· 18.64 mi
2:48:54
Rank: #21150 (+374)
25K → 30K
29:11 | 9:24/mi
20M
3:01:49
Rank: #20985 (+165)
30K → 20M
12:55 | 9:30/mi
21M
3:11:49
Rank: #20804 (+181)
20M → 21M
10:00 | 10:00/mi
35K· 21.75 mi
3:18:46
Rank: #20752 (+52)
21M → 35K
6:57 | 9:17/mi
23M
3:30:51
Rank: #20678 (+74)
35K → 23M
12:05 | 9:39/mi
24M
3:40:23
Rank: #20652 (+26)
23M → 24M
9:32 | 9:32/mi
40K· 24.85 mi
3:47:58
Rank: #20500 (+152)
24M → 40K
7:35 | 8:52/mi
25.2M
3:51:13
Rank: #20440 (+60)
40K → 25.2M
3:15 | 9:25/mi
Finish· 26.22 mi
3:59:29
Rank: #20255 (+185)
25.2M → Finish
8:16 | 8:07/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:57:37
Pace8:58 /mi
2nd Half
Distance13.11 mi
Time2:01:52
Pace9:18 /mi
📊Positive Split: 3.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:4927:538:5827:53
8:58
-
10K
6.21 mi12:20:2955:338:5627:40
8:54
-0:04
15K
9.32 mi12:48:261:23:308:5827:57
9:00
+0:06
20K
12.43 mi13:16:271:51:318:5828:01
9:01
+0:01
Half
13.11 mi13:22:331:57:378:586:06
8:56
-0:05
25K
15.53 mi13:44:392:19:439:0022:06
9:07
+0:11
30K
18.64 mi14:13:502:48:549:0429:11
9:24
+0:17
20M
20.00 mi14:26:453:01:499:0512:55
9:30
+0:06
21M
21.00 mi14:36:453:11:499:0810:00
10:00
+0:30
35K
21.75 mi14:43:423:18:469:086:57
9:17
-0:43
23M
23.00 mi14:55:473:30:519:1012:05
9:39
+0:22
24M
24.00 mi15:05:193:40:239:119:32
9:32
-0:07
40K
24.85 mi15:12:543:47:589:107:35
8:52
-0:40
25.2M
25.20 mi15:16:093:51:139:113:15
9:25
+0:33
Finish
26.22 mi15:24:253:59:299:088:16
8:07
-1:18

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

8:07 /mi

Average Pace

9:08 /mi

Slowest Pace

10:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

43:31

18% of race

Time at Steady Pace

1:59:00

50% of race

Time at Slower Pace

1:16:58

32% of race

Average Pace: 9:08 /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 mi11:52:4927:538:5827:53
8:58
#22318
10K
6.21 mi12:20:2955:338:5627:40
8:54
#22159
15K
9.32 mi12:48:261:23:308:5827:57
9:00
#22115
20K
12.43 mi13:16:271:51:318:5828:01
9:01
#21815
Half
13.11 mi13:22:331:57:378:586:06
8:56
#21792
25K
15.53 mi13:44:392:19:439:0022:06
9:07
#21524
30K
18.64 mi14:13:502:48:549:0429:11
9:24
#21150
20M
20.00 mi14:26:453:01:499:0512:55
9:30
#20985
21M
21.00 mi14:36:453:11:499:0810:00
10:00
#20804
35K
21.75 mi14:43:423:18:469:086:57
9:17
#20752
23M
23.00 mi14:55:473:30:519:1012:05
9:39
#20678
24M
24.00 mi15:05:193:40:239:119:32
9:32
#20652
40K
24.85 mi15:12:543:47:589:107:35
8:52
#20500
25.2M
25.20 mi15:16:093:51:139:113:15
9:25
#20440
Finish
26.22 mi15:24:253:59:299:088:16
8:07
#20255
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi223188808880822017(Top 78%)8560(Top 70%)8560(Top 157%)
10K6.21 mi3.10 mi22159+1598702+1068702+10621958(Top 77%)8571(Top 70%)8571(Top 157%)
15K9.32 mi3.11 mi22115+448659+438659+4322017(Top 78%)8560(Top 70%)8560(Top 157%)
20K12.43 mi3.11 mi21815+3008502+1578502+15721071(Top 74%)8099(Top 66%)8099(Top 148%)
Half13.11 mi0.68 mi21792+238487+158487+1521582(Top 76%)8351(Top 68%)8351(Top 153%)
25K15.53 mi2.42 mi21524+2688336+1518336+15120432(Top 72%)7775(Top 64%)7775(Top 142%)
30K18.64 mi3.11 mi21150+3748168+1688168+16819514(Top 69%)7400(Top 61%)7400(Top 135%)
20M20.00 mi1.36 mi20985+1658087+818087+8119218(Top 68%)7383(Top 60%)7383(Top 135%)
21M21.00 mi1.00 mi20804+1818011+768011+7618322(Top 65%)6969(Top 57%)6969(Top 127%)
35K21.75 mi0.75 mi20752+528003+88003+819551(Top 69%)7743(Top 63%)7743(Top 142%)
23M23.00 mi1.25 mi20678+747987+167987+1619292(Top 68%)7670(Top 63%)7670(Top 140%)
24M24.00 mi1.00 mi20652+267985+27985+219753(Top 70%)7960(Top 65%)7960(Top 146%)
40K24.85 mi0.85 mi20500+1527921+647921+6415633(Top 55%)5879(Top 48%)5879(Top 107%)
25.2M25.20 mi0.35 mi20440+607894+277894+2714303(Top 50%)5223(Top 43%)5223(Top 96%)
Finish26.22 mi1.02 mi20255+1857812+827812+8213736(Top 48%)4834(Top 40%)4834(Top 88%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21stories
+97ft-345ft

Overall

22017

Females

8560

F18-39

8560

5K→10K

3.1 - 6.2 mi

Top 77%
×5stories
+79ft-138ft

Overall

21958

Females

8571

F18-39

8571

10K→15K

6.2 - 9.3 mi

Top 78%
×3stories
+67ft-78ft

Overall

22017

Females

8560

F18-39

8560

15K→20K

9.3 - 12.4 mi

Top 74%
×5stories
+106ft-86ft

Overall

21071

Females

8099

F18-39

8099

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

21582

Females

8351

F18-39

8351

Half→25K

13.1 - 15.5 mi

Top 72%
×4stories
+66ft-88ft

Overall

20432

Females

7775

F18-39

7775

25K→30K

15.5 - 18.6 mi

Top 69%
×9stories
+181ft-148ft

Overall

19514

Females

7400

F18-39

7400

30K→20M

18.6 - 20.0 mi

Top 68%
×5stories
+64ft-50ft

Overall

19218

Females

7383

F18-39

7383

20M→21M

20.0 - 21.0 mi

Top 65%
×8stories
+106ft-24ft

Overall

18322

Females

6969

F18-39

6969

21M→35K

21.0 - 21.8 mi

Top 69%
×7stories
+17ft-86ft

Overall

19551

Females

7743

F18-39

7743

35K→23M

21.8 - 23.0 mi

Top 68%
×5stories
+23ft-63ft

Overall

19292

Females

7670

F18-39

7670

23M→24M

23.0 - 24.0 mi

Top 70%
×6stories
+12ft-82ft

Overall

19753

Females

7960

F18-39

7960

24M→40K

24.0 - 24.9 mi

Top 55%
×1story
+6ft-20ft

Overall

15633

Females

5879

F18-39

5879

40K→25.2M

24.9 - 25.2 mi

Top 50%
×1story
+13ft-16ft

Overall

14303

Females

5223

F18-39

5223

25.2M→Finish

25.2 - 26.2 mi

Top 48%
×2stories
+22ft-21ft

Overall

13736

Females

4834

F18-39

4834

Passing Analysis

Category:
Athletes Passed
2716
Passed By
653
Net Change
+2063
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22318
5K → 10K342183+159#22318#22159
10K → 15K206162+44#22159#22115
15K → 20K34444+300#22115#21815
20K → Half4017+23#21815#21792
Half → 25K29729+268#21792#21524
25K → 30K41036+374#21524#21150
30K → 20M18924+165#21150#20985
20M → 21M19918+181#20985#20804
21M → 35K7927+52#20804#20752
35K → 23M12349+74#20752#20678
23M → 24M7448+26#20678#20652
24M → 40K1597+152#20652#20500
40K → 25.2M655+60#20500#20440
25.2M → Finish1894+185#20440#20255
TOTALS2716653+2063
📊

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