箱根駅伝 本選の展開
（2021年1月2-3日）
| 区間、通算ともにシード権獲得ラインとなる10位の成績との時間差（▲印はシード権ラインに未達） |
| 1区 | 2区 | 3区 | 4区 | 5区 | 6区 | 7区 | 8区 | 9区 | 10区 | ||||||||||||
| 区間 | 通算 | 区間 | 通算 | 区間 | 通算 | 区間 | 通算 | 区間 | 通算 | 区間 | 通算 | 区間 | 通算 | 区間 | 通算 | 区間 | 通算 | 区間 | 通算 | ||
| 1 | 駒澤大学 | ▲00:16 | ▲00:16 | 00:38 | 00:20 | 02:03 | 01:40 | ▲00:02 | 01:59 | 01:12 | 04:32 | 01:30 | 05:51 | 00:33 | 06:29 | 00:44 | 06:36 | 00:22 | 07:28 | 02:05 | 09:45 |
| 2 | 創価大学 | 00:16 | 00:16 | 00:47 | 01:01 | 01:44 | 02:02 | 01:18 | 03:41 | 01:51 | 06:53 | 00:17 | 06:59 | 01:16 | 08:20 | 00:22 | 08:05 | 02:12 | 10:47 | ▲02:06 | 08:53 |
| 3 | 東洋大学 | 00:07 | 00:07 | 00:50 | 00:55 | 00:30 | 00:42 | 00:28 | 01:31 | 01:47 | 04:39 | ▲00:59 | 03:29 | ▲00:26 | 03:08 | 01:17 | 03:48 | 00:18 | 04:36 | 00:05 | 04:53 |
| 4 | 青山学院大学 | 00:13 | 00:13 | ▲00:24 | ▲00:13 | ▲00:23 | ▲01:19 | 00:58 | 00:00 | ▲02:03 | ▲00:42 | 00:53 | 00:00 | 01:14 | 01:19 | 01:03 | 01:45 | 01:06 | 03:21 | 01:00 | 04:33 |
| 5 | 東海大学 | 00:26 | 00:26 | 00:35 | 00:59 | 02:20 | 02:36 | ▲01:36 | 01:21 | 00:44 | 03:26 | 00:21 | 03:36 | 00:13 | 03:54 | ▲01:06 | 02:11 | 00:04 | 02:45 | 00:08 | 03:05 |
| 6 | 早稲田大学 | 00:14 | 00:14 | ▲00:12 | 00:00 | 00:56 | 00:13 | 01:04 | 01:38 | ▲03:10 | ▲00:11 | 00:11 | ▲00:11 | 00:06 | 00:00 | 00:37 | 00:00 | 00:58 | 01:28 | 00:10 | 01:50 |
| 7 | 順天堂大学 | 00:00 | 00:00 | 00:00 | ▲00:02 | 01:00 | 00:15 | 00:32 | 01:08 | ▲00:59 | 01:30 | 01:00 | 02:19 | ▲00:52 | 01:32 | 00:00 | 00:55 | ▲00:11 | 01:14 | 00:20 | 01:46 |
| 8 | 帝京大学 | ▲00:04 | ▲00:04 | ▲00:11 | ▲00:17 | 01:29 | 00:29 | 00:07 | 00:57 | 02:04 | 04:22 | ▲04:05 | 00:06 | 00:00 | 00:11 | 00:26 | 00:00 | 01:01 | 01:31 | ▲00:02 | 01:41 |
| 9 | 國學院大學 | ▲00:01 | ▲00:01 | ▲01:09 | ▲01:12 | 00:31 | ▲01:24 | ▲00:40 | ▲01:43 | 00:31 | 00:09 | 00:27 | 00:25 | 00:11 | 00:41 | 00:13 | 00:17 | ▲00:34 | 00:13 | 01:02 | 01:27 |
| 10 | 東京国際大学 | ▲00:14 | ▲00:14 | 02:16 | 02:00 | 00:19 | 01:36 | ▲00:23 | 01:34 | 00:00 | 02:55 | ▲02:03 | 00:41 | 01:18 | 02:04 | ▲00:56 | 00:31 | ▲01:01 | 00:00 | ▲00:12 | 00:00 |
| 11 | 明治大学 | ▲00:35 | ▲00:35 | ▲01:43 | ▲02:20 | ▲00:18 | ▲03:21 | 00:15 | ▲02:45 | 00:22 | ▲01:02 | ▲00:40 | ▲01:53 | ▲00:16 | ▲02:04 | 01:33 | ▲01:08 | 00:00 | ▲00:38 | 00:00 | ▲00:26 |
| 12 | 中央大学 | ▲00:46 | ▲00:46 | ▲01:33 | ▲02:21 | ▲00:37 | ▲03:41 | 00:13 | ▲03:07 | ▲02:30 | ▲04:16 | 00:21 | ▲04:06 | 00:21 | ▲03:40 | 00:24 | ▲03:53 | 00:18 | ▲03:05 | 00:46 | ▲02:07 |
| 13 | 神奈川大学 | 00:15 | 00:15 | 00:32 | 00:45 | 00:00 | 00:02 | 00:00 | 00:23 | ▲00:23 | 01:21 | ▲00:20 | 00:50 | ▲01:19 | ▲00:24 | ▲00:05 | ▲01:06 | ▲04:01 | ▲04:37 | 01:19 | ▲03:06 |
| 14 | 日本体育大学 | 00:09 | 00:09 | 00:51 | 00:58 | ▲00:15 | 00:00 | ▲01:24 | ▲01:03 | ▲01:55 | ▲01:37 | ▲01:16 | ▲03:04 | 00:03 | ▲02:56 | ▲01:34 | ▲05:07 | 00:37 | ▲04:00 | ▲00:47 | ▲04:35 |
| 15 | 拓殖大学 | 00:00 | 00:00 | 00:48 | 00:46 | ▲01:40 | ▲01:37 | ▲01:11 | ▲02:27 | 01:06 | 00:00 | ▲01:58 | ▲02:09 | ▲00:53 | ▲02:57 | ▲00:45 | ▲04:19 | ▲01:05 | ▲04:54 | ▲00:16 | ▲04:58 |
| 16 | 城西大学 | 00:10 | 00:10 | ▲00:07 | 00:01 | ▲01:03 | ▲01:45 | ▲01:33 | ▲02:57 | 00:53 | ▲00:43 | ▲00:05 | ▲00:59 | ▲00:34 | ▲01:28 | ▲01:46 | ▲03:51 | ▲00:37 | ▲03:58 | ▲01:45 | ▲05:31 |
| 17 | 法政大学 | 00:31 | 00:31 | ▲02:34 | ▲02:05 | ▲00:18 | ▲03:06 | ▲00:02 | ▲02:47 | ▲00:47 | ▲02:13 | ▲01:09 | ▲03:33 | ▲01:26 | ▲04:54 | ▲00:37 | ▲06:08 | ▲01:54 | ▲07:32 | ▲00:21 | ▲07:41 |
| 18 | 国士舘大学 | ▲01:03 | ▲01:03 | 00:56 | ▲00:09 | ▲01:57 | ▲02:49 | ▲00:31 | ▲02:59 | ▲01:09 | ▲02:47 | 00:06 | ▲02:52 | ▲00:51 | ▲03:38 | ▲01:23 | ▲05:38 | ▲02:45 | ▲07:53 | ▲00:37 | ▲08:18 |
| 19 | 山梨学院大学 | ▲01:33 | ▲01:33 | ▲02:14 | ▲03:49 | ▲00:48 | ▲05:20 | 01:52 | ▲03:07 | ▲01:51 | ▲03:37 | 00:00 | ▲03:48 | ▲01:47 | ▲05:30 | ▲02:26 | ▲08:33 | ▲02:31 | ▲10:34 | ▲01:25 | ▲11:47 |
| 20 | 専修大学 | ▲01:28 | ▲01:28 | ▲03:25 | ▲04:55 | ▲02:17 | ▲07:55 | ▲03:23 | ▲10:57 | ▲05:19 | ▲14:55 | ▲01:11 | ▲16:17 | ▲02:39 | ▲18:51 | ▲01:41 | ▲21:09 | ▲01:52 | ▲22:31 | ▲00:18 | ▲22:37 |